DOS Days

Datasheets Archive

DOS Days plays host to a good number of datasheets that can be an invaluable resource for anyone trying to understand more about the underlying hardware for a specific chip or chipset. As a recommendation from one of my visitors, Antonio, I put this page together as a single 'go-to' list, so credit goes to him for the idea of collating this into a one-stop shop.

There are also a number of Reference Guides, Programmers Guides, and "Early Release" sheets in the list.

To jump directly to a manufacturer, click here:

3dfx Ad Lib ALI Alliance AMD Analog Devices Brooktree C-Media Chips & Technologies Cirrus Logic/Crystal Cyrix Dream Ensoniq ESS Etron Technology Faraday Goldstar Harris Headland/G2 Hitachi Hynix (Hyundai) Inmos/SGS Thomson Intel ISSI LG Micron Mitsubishi Motorola Music Semiconductor NEC Nippon Oak OKI OPTi Panasonic Paradise Systems Philips Roland S3 Samsung Sanyo Sharp Siemens Sierra Semiconductor SiS ST Microelectronics Texas Instruments Toshiba UMC Vitelic Western Digital Winbond Yamaha

If you have any datasheets in your collection that are not listed here, and feel they would benefit other visitors and you are willing to share them, please get in touch.

3dfx

Chip Designation	Description	Download
Voodoo	(1999) SST-1 Graphics Engine Data Book.
Voodoo 2	(1999) Voodoo2 Graphics Engine Data Book.
Voodoo Banshee	(1998) Universal Access 2D Data Book.
Voodoo Banshee	(1998) Universal Access 3D Data Book.
Voodoo 3	(1999) Avenger (Voodoo3) Graphics Engine Data Book.
Voodoo Rush	(1998) Macronix MX86251 2D video Data Book.
Voodoo Rush	(1999) SST-96 Data Book.

Ad Lib

Chip Designation	Description	Download
Music Synthesizer Card	Programming Guide for the Ad Lib card.

ALI (Acer Labs Inc.)

Chip Designation	Description	Download
M1487/M1489	Data sheet for the "FINALi 486" Socket 3 PCI chipset (July 1997).
M1521/M1523	Data sheets for the "Aladdin III" 586 chipset (November 1996).
M1531/M1533/M1543	Data sheet for the "Aladdin IV" 586 chipset (May 1997January 1998).
M1541/M1542	Data sheet for the "Aladdin V" Socket 7 chipset (July 1998).
M1621	Data sheet for the "Aladdin Pro II" Pentium II chipset (December 1998).

Alliance Semiconductor

Chip Designation	Description	Download
AS7C256 AS7C256L	A 32Kx8 SRAM chip used for motherboard Level 2 cache or on cache modules. It came in speeds of 10ns, 12ns, 15ns, 20ns, 25ns and 35ns, and was packaged in either a 28-pin DIP/SOJ or 22-pin TSOP.

AMD

Chip Designation	Description	Download
8086	(1989) Datasheet for the AMD 8086 microprocessors.
Am27C256	A 32 KB EPROM (32Kbx8) commonly used for system and video BIOS. It was available in speeds from 45ns to 200ns, and came packaged in a 28-pin DIP or 32-pin PLCC. It is pin-compatible with the ST Microelectronics M27C256B and Texas Instruments TMS27C256.
Am386	Data Book for the Am386 series of microprocessors.
Am386SX/SXL/SXLV	(1997) Datasheet for the Am386SX/SXL/SXLV microprocessors.
Am486DX/DX2	(1997) Hardware Reference Manual for the Am486DX and Am486DX2 microprocessors.
Am486	(1994) Software Users Guide for the Am486 microprocessor family.
Am486	(1996) Datasheet for the Enhanced Am486 microprocessor family.
Am486	(1997) Datasheet for the Enhanced Am486 microprocessor family.
Am486DE2	(1996) Datasheet for the Am486DE2 embedded microprocessor.
Am5x86	(1996) Datasheet for the Am5x86 microprocessor family.
5k86	(1996) Technical Reference Manual for the AMD5k86 microprocessors.
K5	(1997) Datasheet for the K5 microprocessor.
K5	(1997) Performance Brief for the K5 microprocessor.
K5	(1996) Technical Reference Manual for the K5 microprocessor.
K6	(1998) Datasheet for the AMD K6 microprocessor.
K6	(1998) Revision Guide for the AMD K6 microprocessor.
K6	(1999) Revision Guide for the AMD K6 microprocessor.
K6 MMX	(2000) Datasheet for the AMD K6 MMX Enhanced microprocessor.
K6-2	(2000) Datasheet for the AMD K6-2 microprocessor.
K6-2	(1999) Revision Guide for the AMD K6-2 microprocessor.
Am78C201/202	(1995) Datasheet for the InterWave Interactive Audio and Wavetable Solution.
Am81C176	A RAMDAC chip from 1989 that supported 8-bit colour depths (256 colours max.). It was available in 35, 50, 66, and 80 MHz speeds and usually came packaged in a 28-pin DIP or 32-pin PLCC package.

Analog Devices

Chip Designation	Description	Download
AD1815	Dubbed the "AD1815 SoundComm Controller", it is a single-chip Plug & Play sound controller, with built-in support for Ad Lib FM synthesis, OPL3 and Sound Blaster Pro. It also has an MPU-401 UART MIDI interface.
AD1816A	Dubbed the "AD1816 SoundPort Controller", it is a single-chip PC'97-compliant Plug & Play sound controller. It supports Ad Lib FM synthesis, OPL3 and Sound Blaster Pro. It also has an MPU-401 UART MIDI interface.
AD1819A	(1998) Dubbed the "AD1819 SoundPort Controller", it is a single-chip AC'97-compliant Plug & Play sound controller. It supports Ad Lib FM synthesis, OPL3 and Sound Blaster Pro. It also has an MPU-401 UART MIDI interface and Analog Devices' "Phat Stereo 3D" stereo enhancement.
AD1845JP	(1995) A 16-bit parallel port stereo "SoundPort" CODEC compatible with Windows Sound System. It is MPC Level2-compliant.
AD1846	A low-cost alternative to the AD1848, the "AD1846 SoundPort Stereo CODEC" is a single-chip integrated audio solution.
AD1848K AD1848KP	The "AD1848K SoundPort Stereo CODEC" is a single-chip ADC/DAC.
ADSP-2101 ADSP-2103 ADSP-2105 ADSP-2111 ADSP-2115 ADSP-2161/2162/2163/2164	The ADSP-21xx was a family of DSP microcomputers with on-chip memory designed for high speed processing. They include built-in serial ports, a programmable timer, and on the ADSP-2111 a host interface port. It was used on a number of ISA sound cards including the Orchid GameWave 32 and SoundWave 32.
ADV476KN	RAMDAC chips that are pin-compatible with the Inmos G171 and G176 and are the same as the Brooktree BT471KP and BT476KP.

ATI

Chip Designation	Description	Download
Rage LT Pro	(1998) Technical Reference Manual for the Rage LT Pro
Rage XL/XC	(1999) Technical Reference Manual for the Rage XL and XC
Rage Pro	(2000) Programmers Guide for the Rage Pro and derivatives.

Brooktree Corporation

Chip Designation	Description	Download
BT471KPJ BT476KPJ BT478KPJ	RAMDAC chips that are pin-compatible with the Inmos G171 and G176 and are the same as the Analog Devices ADV476KN.

C-Media

Chip Designation	Description	Download
CMI8330 CMI8330A	An ISA-based integrated audio chip with support for Ad Lib, Sound Blaster 2.0, Sound Blaster Pro, Sound Blaster 16, and Windows Sound System 2.0. It has an embedded software wavetable synthesizer that is MPU-401-compliant and is compatible with the .DLS soundfont standard. The CMI8330 also includes HRTF (Head Replacement Transfer Functions) 3D positional audio from Sensaura(TM). The software synth uses your PC's main memory for soundfont storage.

Chips & Technologies

Chip Designation	Description	Download
CT65555	(1997) Datasheet for the CT65555 HiQVPro Flat Panel/CRT GUI Controller.
82C425	(1990) Datasheet for the 82C425 CGA LCD/CRT Controller.
82C426	(1990) Datasheet for the 82C426 CGA LCD/CRT Controller.
82C450	(1993) Datasheet for the 82C450 Integrated 512 KB VGA Graphics Controller.
82C451	(1990) Datasheet for the 82C451 Integrated VGA Graphics Controller.
82C452	(1990) Datasheet for the 82C452 Integrated VGA Graphics Controller.
82C455	(1990) Data Book for the 82C455 Flat Panel/CRT VGA Controller.
82C456/460	(1990) Data Book for the 82C456 and 82C460 Enhanced Flat Panel/CRT VGA Controller.
82C480	(1991) Datasheet for the 82C480 Graphics Accelerator.
82C481	(1992) Datasheet for the 82C481 True Color Graphics Accelerator.
82C601	(1989) Preliminary Specification for the 82C601 Single Chip Peripheral Controller.
82C611/612	Preliminary information on the MicroCHIPS Microchannel Interface.
82C780	(1989) Preliminary Specification for the 82C780 Microchannel Hard Disk Controller.
82C5058	(1989) Reference Manual for the 82C5058 SCSI Controller.
82C5059	(1989) Datasheet for the 82C5059 Single Chip AT Disk Controller.
82C5086	(1989) Reference Manual for the 82C5086 Synchronous SCSI Controller.
CS8221	(1988) Data Book for the New Enhanced AT (NEAT) Chipset.
CS8230/8231	(1989) Datasheet for the CS8230 and CS8231 386/AT Chipsets.
CS8245	(1990?) Datasheet for the CS8245 VGA Chipset which comprised the 82C441 graphics controller and 82A442 bus interface.
Chips/280	(1989) Preliminary specifications for IBM PS/2 Model 70/80-Compatible Chipset.

Cirrus Logic / Crystal Semiconductor

Chip Designation	Description	Download
CL-GD610/620	(1989) An enhanced version of the former CL-GD510/520 chipset, the 610/620 is a VGA controller suitable for both CRT and flat panels. It is register-compatible with IBM VGA, EGA, CGA and MDA standards as well as Hercules HGC. Integrated 8bpp RAMDAC (256 colours) and supports either 256 KB or 1 MB of video memory. It can operate up to 33 MHz dot clock providing resolutions up to 800 x 600. Available as 100-pin QFP.
CL-GD542x	(1995) A VESA-compatible VGA controller with GUI (2D) accelerator, 24-bit True-Color RAMDAC. It can operate up to 86 MHz dot clock and provide resolutions up to 1280 x 1024. Available as 160-pin PQFP.
CL-GD5436	(1996) A PCI / VLB VESA-compatible VGA controller with 64-bit GUI (2D) accelerator, 24-bit True-Color RAMDAC. It can operate up to 135 MHz dot clock and provide resolutions up to 1280 x 1024. Available as 208-pin PQFP.
CL-GD543x/544x	(1995) Technical Reference Manual. Known as the "Alpine" family, An ISA / PCI / VLB VESA-compatible VGA controller with 32-bit or 64-bit GUI (2D) accelerator, 24-bit True-Color RAMDAC. It can operate up to 135 MHz dot clock and provide resolutions up to 1280 x 1024. Available as 208-pin PQFP.
CL-GD543x/544x	(1996) Datasheet. An ISA / PCI / VLB VESA-compatible VGA controller with 32-bit or 64-bit GUI (2D) accelerator, 24-bit True-Color RAMDAC. It can operate up to 135 MHz dot clock and provide resolutions up to 1280 x 1024. Available as 208-pin PQFP.
CL-GD543x	(1994) Applications and Errata Book for CL-GD543x family.
CL-GD62xx	(1993) A VGA controller designed for use with LCD monochrome or colour STN flat panels. Integrated RAMDAC supporting up to 8bpp, and resolutions up to 1024 x 768. Available as 160-pin PQFP.
CL-GD6245	(1994) A VGA controller designed for use with LCD monochrome or colour STN/TFT flat panels. Integrated RAMDAC supporting up to 8bpp, and resolutions up to 1024 x 768. Available as 176-pin VQFP.
CL-GD6420	(1993) A VGA controller designed for use with high-end notebook computers. Integrated RAMDAC supporting up to 8bpp, and resolutions up to 1024 x 768. Available as 160-pin QFP.
CL-GD7541	(1995) A Super VGA controller designed for use with LCD flat panels. Integrated 24-bit True Colour RAMDAC supporting resolutions up to 1280 x 1024. Available as 208-pin QFP.
CL-GD7548	(1995) Pin-compatible with CL-GD7541 and 7543, the 7548 is a Super VGA and XGA controller designed for use with LCD flat panels. Includes low-cost multimedia options such as enhanced motion video acceleration, and supports resolutions up to 1280 x 1024. Available as 208-pin PQFP.
CS4110, CS4111	(1994) 4 MB wavetable sample ROMs used by the Crystal CS9203 and CS9233 wavetable synthesizer ICs. CS4110 is the base sample set while CS4111 has added support for Roland GS sound.
CS4112	(1995) A 1 MB wavetable sample ROM used by the Crystal CS9203 and CS9233 wavetable synthesizer IC. CS4112 comprises GM and GS samples with 343 sounds (190 instruments, 107 percussion sounds, and 46 special effects).
CS4215	(Early 1993) CS4215, the first with the "Mwave" moniker, is a 16-bit stereo audio CODEC with 4 audio inputs and 2 audio outputs, with sampling frequencies from 4 kHz to 50 kHz. Available as CS4215-KL (44-pin PLCC) and CS4215-KQ (100-pin TQFP).
CS4216	(Late 1993) CS4216, the second with the "Mwave" moniker, is a 16-bit stereo audio CODEC with 4 audio inputs and 2 audio outputs, with sampling frequencies from 4 kHz to 50 kHz. Available as CS4216-KL (44-pin PLCC) and CS4216-KQ (44-pin TQFP).
CS4218	(1996) CS4218 is a 16-bit stereo audio CODEC with 4 audio inputs and 2 audio outputs, with sampling frequencies from 4 kHz to 50 kHz. It is pin- and function-compatible with CS4216. It differs from CS4216 in that it runs from either 5V or 3.3V (CS4216 requires 5V), and provides different serial modes and uses different digital filters. CS4218 is a later design. Available as CS4218-KL (44-pin PLCC) and CS4218-KQ (44-pin TQFP).
CS4231	(1993) CS4231 also carries the "Mwave" label, and is a 16-bit audio CODEC. It is a pin-compatible upgrade over the CS4248 and AD1848 (PLCC version). Available as CS4231-KL (68-pin PLCC) and CS4231-KQ (100-pin TQFP).
CS4231A	(1994) CS4231A drops the "Mwave" label. It is a 16-bit audio CODEC that is pin-compatible with [and an upgrade over] CS4231 and CS4248. Available as CS4231A-KL (68-pin PLCC) and CS4231A-KQ (100-pin TQFP).
CS4232	(1995) A single-chip Plug & Play audio system controller (multimedia codec), CS4232 is compatible with Sound Blaster, Sound Blaster Pro and Windows Sound System (WSS). It also provides an MPU-401 UART-compatible MIDI interface. Available as CS4232-KQ (100-pin TQFP) and CS4232-KM (100-pin PQFP).
CS4235	(1997) CS4235, "CrystalClear" is a low-cost Plug & Play audio system controller, compatible with all CS423xB chips. It is compatible with Sound Blaster, Sound Blaster Pro and Windows Sound System (WSS), is fully PC'97 and PC'98-compliant, and includes 3D stereo enhancements. Available as CS4235-JQ (100-pin TQFP) and CS4235-KQ (100-pin TQFP).
CS4236	(1996) CS4236 is a single-chip Plug & Play audio system controller, compatible with Sound Blaster, Sound Blaster Pro and Windows Sound System (WSS). It includes an interface for an external wavetable device and an MPU-401 UART MIDI interface. Available as CS4236-KQ (100-pin TQFP) only.
CS4237B	(1997) CS4237, "CrystalClear" is a Plug & Play audio system controller. It is compatible with Sound Blaster, Sound Blaster Pro and Windows Sound System (WSS), is fully PC'97-compliant, and includes SRS 3D Sound Technology built-in as well as an MPU-401 UART MIDI interface. Available as CS4237B-JQ (100-pin TQFP) and CS4237B-KQ (100-pin TQFP).
CS4248	(1993) CS4218 "Mwave" is a 16-bit stereo audio CODEC with sampling frequencies from 4 kHz to 50 kHz. It is pin-compatible with Analog Devices AD1848 (PLCC). Available as CS4248-KL (68-pin PLCC) and CS4248-KQ (100-pin TQFP).
CS4280	(1998) CS4280, "CrystalClear" is a low-cost PCI audio system controller with integrated legacy [Sound Blaster Pro] games support via PC-PCI or Distributed DMA. It is compatible with the CS4614, CS4622 and CS4624, is fully PC'98-compliant when used with the CS4297, and includes 3D stereo enhancements. Available as CS4280-CM (100-pin MQFP) and CS4280-CQ (128-pin TQFP).
CS4281	(1999) CS4281, "CrystalClear" is a low-cost PCI audio system controller with integrated legacy [Sound Blaster Pro] games support via PC-PCI or Distributed DMA. It is compatible with the CS4614 and CS4280-CM, is fully PC'98- and PC'99-compliant when used with the CS4297A, and includes 3D stereo enhancements. Available as CS4281-CM (100-pin MQFP) and CS4281-CQ (100-pin TQFP).
CS4330, CS4331, CS4333	An 18-bit stereo DAC typically used in conjunction with CS9233 wavetable synthesizer, converting the stereo digital audio stream into a stereo analogue audio output. Housed in an 8-pin SOIC. It is not known what the differences are between the three model numbers.
CS4610, CS4611	(1998) CS4610/11, "CrystalClear SoundFusion" is a PCI audio accelerator chip. They fully support DirectX 5.0 3D Positional Audio, Dolby Digital AC-3, DDMA for legacy support in DOS in addition to Crystal's own proprietary CCLS (CrystalClear Legacy Support). Compliant with AC'97 2.0. Cards/boards that use these chips provide S/PDIF digital input and output. Available in 128-pin TQFP or 100-pin MQFP packages..
CS4622, CS4622-CQ, CS4624, CS4624-CQ	(1998) CS4622 and CS4624, "CrystalClear SoundFusion" is a PCI audio accelerator chip. They fully support DirectX 5.0 3D Positional Audio, Dolby Digital AC-3, DDMA for legacy support in DOS in addition to Crystal's own proprietary CCLS (CrystalClear Legacy Support). Compliant with AC'97 2.0. Cards/boards that use these chips provide S/PDIF digital input and output. Available only in 128-pin TQFP.
CS8905, CS8905A	A wavetable effects processor that complements Dream SAM9233 and others, offering reverb and chorus effects.
CS9203	(1993) The CS9203 Advanced Music Synthesizer is a fully General MIDI-compliant wavetable synthesizer. Can be connected to a 1, 2, 4 or 8 MB wavetable sample ROM such as CS4110 or CS4111.
CS9233	(1995) The CS9233 Integrated Wavetable Music Synthesizer is a fully GM- and GS-compatible wavetable synthesizer that connects to a 1 MB or 4 MB wavetable sample ROM such as CS4110 or CS4111, with 128 melodic instruments and 47 percussion sounds. It also has onboard FM synthesis for Ad Lib compatibility.
CS9236	(1997) A GM-compatible wavetable synthesizer with all ROM and RAM on a single chip, with 128 melodic instruments and 47 percussion sounds.

Cyrix, Inc.

Chip Designation	Description	Download
Cx486SLC up to MII	(1998) Application Note. CPU Detection Guide
Cx486DLC	(1992) Preliminary Architecture Overview for the Cx486DLC microprocessor.
Cx486SLC	(1991) Preliminary Architecture Overview for the Cx486SLC microprocessor.
Cx486SLC/e	(1992) Preliminary Architecture Overview for the Cx486SLC/e microprocessor.
5x86	(1995) Preliminary Architecture Overview for the 5x86 microprocessor.
5x86	(1995) BIOS Writer's Guide for the 5x86 microprocessor.
5x86	(1995) Overview of the 5x86 microprocessor.
5x86	(1995) Technical Brief of the 5x86 microprocessor.
5x86	(1995) Thermal Design Considerations for the 5x86 microprocessor.
5x86	(2011) Register Enhancements Revealed
6x86 (M1)	(1995) BIOS Writer's Guide for the 6x86 microprocessor.
6x86 (M1)	(1996) Technical Brief for the 6x86 microprocessor.
6x86 (M1)	(1996) Preliminary Architecture Overview for the 6x86 microprocessor.
6x86 (M1)	(1996) Thermal Design Considerations for the 6x86 microprocessor.
6x86 (M1)	(1996) Instruction Set for the 6x86 microprocessor.
6x86 (M1)	(1995) Architecture for the 6x86 microprocessor.
6x86 (M1)	(1995) Data Book for the Cyrix M1 microprocessor.
6x86 (M1)	(1998) Application Note. Software Customization for the 6x86 family.
6x86 (M1)	(1997) Application Note. Pin and Bus Cycle Differences for the 6x86 family.
6x86-P200+ (M1)	(1996?) Data Book Addendum for the Cyrix 6x86-P200+ microprocessor.
6x86MX	(1998) Application Note. 100 MHz Bus Design.
6x86MX	(1997) Datasheet for the 6x86MX microprocessor.
6x86MX	(1997) BIOS Writer's Guide for the 6x86MX microprocessor.
6x86MX, MII	(1998) Application Note. SMM Design Guide for 6x86MX and MII processors.
MII	(1998) Preliminary Data Book for the Cyrix MII microprocessor.
MII	(1999) Preliminary Data Book for the Cyrix MII microprocessor.
MII	(1998) Application Note. Cyrix Extension to the Multimedia Instruction Set.
MII	(1998) Application Note. Performance Rating the Cyrix MII-300 Processor.
MII	(1998) Application Note. Software Customization for the 6x86 and MII family.
MII-400	(1999) Data Book Addendum for the MII-400 (95/285 MHz) processor.
MII-433	(1999) Data Book Addendum for the MII-433 (100/300 MHz) processor.
MII, MIII	(1999) BIOS Writer's Guide for the MII and MII Mobile microprocessors.
Cyrix III	(2000) VIA-branded MX microprocessor.

Dream

Chip Designation	Description	Download
SAM2655	(2013) A wavetable synthesizer chip that uses General MIDI-compatible CleanWave(TM) 1MB, 2MB or 4 MB sample ROMs.
SAM2695	(2013) A low-power wavetable synthesizer chip with built-in General MIDI-compatible CleanWave(TM) samples.
SAM8905	A wavetable effects processor that complements SAM9233 and others.
SAM9407	(1996) A wavetable synthesizer chip that connects to a 512 KB ROM for samples.
SAM9503	(1996) A wavetable synthesizer chip that connects to a 4 MB ROM for samples.
SAM9703	(1997) A wavetable synthesizer chip that connects to a 4 MB ROM for samples.
SAM9713	(1997) A wavetable synthesizer chip that connects to a 1 MB Roland GS or CleanWave(TM) ROM for samples.
SAM9733	(1997) A wavetable synthesizer chip that connects to a 1 MB CleanWave8(TM) ROM or a 4 MB CleanWave32(TM) for samples.
SAM9753	(1997) A wavetable synthesizer chip that connects to a 1 MB or 4 MB CleanWave(TM) ROM for samples.
SAM9773	(1998) A wavetable synthesizer chip with built-in ROM for samples and 3D positional audio.
SAM9793	(1998) A wavetable synthesizer chip with built-in ROM for samples and 3D positional audio.

Ensoniq

Chip Designation	Description	Download
ES1370	(1997) Ensoniq's "AudioPCI" ES1370 provides SoundScape audio performance in a PCI solution. Offering excellent DOS [emulated] compatibility, it stores wavetable samples in main memory so does not require a separate ROM chip for sample storage. it is available as a 100-pin PQFP and 100-pin TQFP package.
ES1371	(1997) Ensoniq's "AudioPCI 97" ES1371 is an AC'97 PCI audio controller with a SoundScape wavetable synthesizer. Just like ES1370, it stores wavetable samples in main memory so it does not require a separate ROM chip for sample storage. Just the same as ES1370, it emulates DOS interrupt requests by trapping accesses to Sound Blaster registers and issuing the appropriate IRQ lines on the PCI bus. Available as a 100-pin PQFP and 100-pin TQFP package.
ES1373	(1997) Ensoniq's "AudioPCI 97" ES1373 is an AC'97 PCI audio controller with a SoundScape wavetable synthesizer. Just like ES1370 and ES1371, it stores wavetable samples in main memory so it does not require a separate ROM chip for sample storage. Just the same as ES1370, it emulates DOS interrupt requests by trapping accesses to Sound Blaster registers and issuing the appropriate IRQ lines on the PCI bus. Available as a 100-pin PQFP package only.
ES5505	Ensoniq's ES5505 "OTIS" is a VLSI device comprising a set of digital filters and a PCM modulator.
ES5506	Ensoniq's ES5506 "OTTO" is the primary wavetable synthesizer chip in their SoundScape audio line.
ES5701	Ensoniq's ES5701 "Super-GLU" (General Logic Unit) is a gate array that is designed to work alongside a 68000 processor, an Ensoniq DSP, and OTIS.
ES5706	(1993) Ensoniq's ES5706 "ODIE" is a multimedia PC host interface chip - a companion gate array for the ES5506 "OTTO" digital oscillator chip, and developed by Sequoia Development Group.

ESS

Chip Designation	Description	Download
ES688	A complete audio chip with integrated DAC and ADC with ADPCM compression and a 5-channel mixer. Provides Sound Blaster, Sound Blaster Pro, and Windows Sound System compatibility. Came in a 100-pin PQFP package.
ES689	A wavetable music synthesizer chip. Designed to be used in conjunction with an ES1xxx AudioDrive chip. Requires an external 512 KB ROM chip (ES981) to hold musical instrument samples. Came in a 100-pin PQFP package.
ES690F	A wavetable music synthesizer chip with chorus and reverb special effects, and advanced power management facility. Designed to be used in conjunction with an ES1xxx AudioDrive chip. Requires an external 512 KB ROM chip (ES981) to hold musical instrument samples. Came in a 52-pin PQFP package.
ES692S	A wavetable music synthesizer chip with embedded 1 MB ROM for sample storage. To be used in conjunction with an ES1xxx AudioDrive chip. Came in a 100-pin TQFP package.
ES938	An audio effects processor with "Spatializer" 3D stereo sound. Came in a 28-pin SSOP package.
ES978	An Expansion Audio Mixer for use in a docking station, providing audio expansion resources to an ES1878 Audiodrive-equipped portable unit.
ES1688	A complete 16-bit stereo audio chip with 20-voice ESFM music synthesizer, ESPCM compression, a 6-channel mixer, and interface to an external ES689/ES690 wavetable. Provides OPL3, Sound Blaster, Sound Blaster Pro, and Windows Sound System compatibility. Came in a 100-pin PQFP package.
ES1788	A complete 16-bit stereo audio chip with 20-voice ESFM music synthesizer, ESPCM compression, a 6-channel mixer, and interface to an external ES689/ES690 wavetable. Provides OPL3, Sound Blaster, Sound Blaster Pro, and Windows Sound System compatibility. Came in a 100-pin PQFP package.
ES1868	A complete 16-bit stereo audio chip with 20-voice ESFM music synthesizer, ESPCM compression, a 6-channel mixer, hardware volume up/down/mute, IDE Plug and Play compliance, IDE CD-ROM interface, configurable DMA for demand transfer and F-type, and interface to an external ES689/ES690 wavetable. Provides OPL3, Sound Blaster, Sound Blaster Pro, and Windows Sound System compatibility. Came in a 100-pin PQFP package.
ES1869	A complete 16-bit stereo audio chip with 20-voice ESFM music synthesizer, ESPCM compression, a 6-channel mixer, hardware volume up/down/mute, IDE Plug and Play and PC97/PC98 compliance, IDE CD-ROM interface, configurable DMA for demand transfer and F-type, integrated "Spatializer" 3D audio effect processor, MPU-401-compatbile UART for external wavetables, and Zoom video port for MPEG audio. Provides Sound Blaster, Sound Blaster Pro, and Windows Sound System compatibility. Came in a 100-pin PQFP package.
ES1878	A complete 16-bit stereo audio chip with 20-voice ESFM music synthesizer, ESPCM compression, a 6-channel mixer, hardware volume up/down/mute, IDE Plug and Play compliance, IDE CD-ROM interface, configurable DMA for demand transfer and F-type, MPU-401-compatbile UART for external wavetables, Zoom video port for MPEG audio, and interface for ES978 Expansion Audio Mixer. Provides Sound Blaster, Sound Blaster Pro, and Windows Sound System compatibility. Came in a 100-pin PQFP package.
ES1879	A complete 16-bit stereo audio chip for notebook computers with 20-voice ESFM music synthesizer, ESPCM compression, a 6-channel mixer, hardware volume up/down/mute, IDE Plug and Play and PC97/PC98 compliance, IDE CD-ROM interface, configurable DMA for demand transfer and F-type, integrated "Spatializer" 3D audio effect processor, MPU-401-compatbile UART for external wavetables, Zoom video port for MPEG audio, and interface for ES978 Expansion Audio Mixer. Provides Sound Blaster, Sound Blaster Pro, and Windows Sound System compatibility. Came in a 100-pin TQFP package.
ES1887	A complete 16-bit stereo audio chip with 20-voice ESFM music synthesizer, ESPCM compression, a 6-channel mixer, hardware volume up/down/mute, 3 stereo DACs with independent sample rate and filter control, configurable DMA for demand transfer and F-type, and interface to an external ES689/ES690 wavetable. Provides OPL3, Sound Blaster, Sound Blaster Pro, and Windows Sound System compatibility. Came in a 100-pin PQFP package.
ES1888	A complete 16-bit stereo audio chip with 20-voice ESFM music synthesizer, ESPCM compression, a 7-channel mixer, hardware volume up/down/mute, 3 stereo DACs with independent sample rate and filter control, and interface to an external ES689/ES690 wavetable. Provides OPL3, Sound Blaster, Sound Blaster Pro, and Windows Sound System compatibility. Came in a 100-pin PQFP package.
ES1938	Part of ESS' new "PCI AudioDrive" range, it provides ESFM synthesizer in addition to Sound Blaster, Sound Blaster Pro, and Windows Sound System compatibility. Came in a 100-pin TQFP package.
ES1946	Part of ESS' new "PCI AudioDrive" range and optimised for Notebook PCs, it provides ESFM synthesizer in addition to Sound Blaster, Sound Blaster Pro, and Windows Sound System compatibility. It was a superset of the ES1938, adding an I2S interface for Zoom Video. Came in a 100-pin TQFP package.
ES1948	Part of ESS' "Maestro" PCI audio accelerator range. Came in a 208-pin PQFP package.
ES1968(?)/ES1970	Part of ESS' "Maestro" PCI audio accelerator range and optimised for Notebook PCs. Came in a 100-pin TQFP package (Maestro-2 and Maestro-2E), 144-pin TQFP package (Maestro-2EM).
ES1978	A complete 16-bit stereo audio chip for notebook computers with 20-voice ESFM music synthesizer, ESPCM compression, a 6-channel mixer, hardware volume up/down/mute, IDE Plug and Play compliance, IDE CD-ROM interface, configurable DMA for demand transfer and F-type, MPU-401-compatbile UART for external wavetables, Zoom video port for MPEG audio, and interface for ES978 Expansion Audio Mixer. Provides Sound Blaster, Sound Blaster Pro, and Windows Sound System compatibility. Came in a 100-pin PQFP package.

EtronTech / Etron Technology

Chip Designation	Description	Download
Em614163	A 4096-kilobit (512 KB) EDO DRAM chip configured as 256Kx16. It was available in 25ns, 28ns, 30ns, 35ns and 40ns speeds and usually came packaged in a 40-pin SOJ.

Faraday Electronics

Chip Designation	Description	Download
FE2010	(1985) A single-chip XT chipset (bus, CPU and peripheral controller). Designed for Intel 8088 or NEC V20.
FE2011	(1987) A single-chip IBM PS/2 Model 30 clone chipset (bus, CPU and peripheral controller). Designed for Intel 8086 and 80C86 CPUs, or NEC V30.
FE3400 FE3400A FE3400B	(1988) A 4-chip chipset for 80286 systems that includes the FE3000A (CPU controller), FE3020 (Address buffer memory controller), FE3010 / FE3010B (Peripheral controller) and FE3030 (data buffer). Some of these chips can also be used in 80386SX systems. This chipset was designed after the acquisition of Faraday Electronics by Western Digital, so the chipset is branded Western Digital.
FE3500	(1988) A 5-chip chipset for 80286 systems up to 12.5 MHz that includes the FE3000A (CPU controller), FE3020 (Address buffer memory controller), FE3010 (Peripheral controller), FE3030 (data buffer) and FE3040 (I/O manager). Some of these chips can also be used in 80386SX systems.
FE3600 FE3600B FE3600C	(1988) A 4-chip chipset for 80286 systems that includes the FE3001A (CPU controller), FE3021 (Address buffer memory controller), FE3010 / FE3010C (Peripheral controller) and FE3031 (data buffers). Some of these chips can also be used in 80386SX systems. This chipset was designed after the acquisition of Faraday Electronics by Western Digital, so the chipset is branded Western Digital.
FE5400	(1987) A 4-chip chipset for 80286 systems up to 20 MHz that includes the FE5000A Peripheral and Control device), FE5010 (DMA and Micro Channel control device), FE5020 (Address and data buffer logic device), and FE5030 (Memory controller).

Fujitsu

Chip Designation	Description	Download
81C4256A MB81C4256A	A 1024-kilobit Fast Page Mode DRAM chip configured as 256Kx4. It was available in 60ns, 70ns, 80ns, and 100ns speeds and usually came packaged in a 20-pin DIP or 26-pin PLCC. It is pin-compatible with Hynix HY534256 and Golstar GM71C4256A.
MB814100A	A 4096-kilobit Fast Page Mode DRAM chip configured as 4096Kx1. It was available in 60ns, 70ns, and 80ns speeds and usually came packaged in a 26-pin SOJ.
MB81G83222	A 128Kx32 dual-bank SGRAM chip (1 MB total memory). Available in 67 MHz (-015), 84 MHz (-012) and 100 MHz (-010) speeds, and packaged in a 100-pin PQFP.
MB85230 (SIPP/SIMM) MB81C1000	A 1 MB RAM module with parity comprising nine 20-pin 1024-kilobit Fast Page Mode DRAM chips (MB81C1000) configured as 256Kx4. It was available in 80ns, 100ns, and 120ns speeds.
MBM27C1001	A 128 KB one-time programmable EPROM chip, configured at 128K x 8. It is sometimes used for the main BIOS chip on PCs, and comes in a 32-pin DIP package.
MBM832000A	A 256 KB programmable static ROM chip, configured at 256K x 8. It is sometimes used for the main BIOS chip on PCs, and is pin-compatible with the MBM27C2001.

Goldstar

Chip Designation	Description	Download
GM71C4256A GM71C4256AL	A 1024-kilobit Fast Page Mode DRAM chip configured as 256Kx4. It was available in 60ns, 70ns, 80ns, and 100ns speeds and usually came packaged in a 20-pin DIP. It is pin-compatible with Hynix HY534256, Fujitsu 81C4256A, Panasonic MN41C4256 and Siemens HYB514400BJ.
GM79256NS	A SIMM RAM module comprising two 20-pin 1024-kilobit Fast Page Mode DRAM chips (GM71C4256A) configured as 256Kx4, and one 18-pin 256-kilobit DRAM chip (GM71C256A) configured as 256Kx1 for parity. It was available in 70ns, 80ns, and 100ns speeds.

Harris Semiconductor

Chip Designation	Description	Download
80C88 80C88-2	A microprocessor compatible with the Intel 8088. The 80C88 runs at 5 MHz while the 80C88-2 runs at 8 MHz. It was available in a 40-pin DIP or 40-pin PLCC package.
80C286	A microprocessor compatible with the Intel 80286. The 80C286 came in 10, 12, 16, 20 and 25 MHz versions. It was available in a 68-pin PGA or 68-pin PLCC package.
82C88	A bus controller compatible with 8088/8086 and 80188/80186 CPUs, including their CMOS counterparts 80C88, 80C86, 80C186, and 80C188. It was available in a 20-pin DIP or 20-pin PLCC.

Headland Technology / G2

Chip Designation	Description	Download
HT101/HT102 GC101/GC102	(1988) An 80286 chipset available in 12 MHz and 16 MHz versions and able to address up to 4 MB of memory. The 101 is available in a 160-pin flat-pack and the 102 is available in an 84-pin PLCC package.
GC201	(1987) An EGA multi-mode graphics controller, able to address up to 256 KB of video memory. Comprises a graphics controller, sequencer, and attribute controller. Fully backward-compatible with MDA, CGA and Hercules graphics standards, it was available in an 160-pin PLCC package.
GC205/HT205	(1988) A VGA controller.
GC208/HT208	(1989) A Super VGA controller.
GCK181	(1989) A universal PS/2 chipset for the 80286, 80386 and 80386SX microprocessors. The chipset comprises GC181 CPU/Bus Controller (68-pin PLCC), GC182 Memory Controller (120-pin PQFP), GC183 DMA Controller (160-pin PQFP), GC184 Address/Data Buffer (160-pin PQFP), and GC186 Peripheral Controller (160-pin PQFP).
HTK320	(1991) An 80386DX chipset, comprising HT321 ISA Controller and HT322 Memory Control Unit (both in 184-pin PQFP). The chipset supports CPU speeds of up to 40 MHz, both Weitek 3167 and Intel 80387 coprocessors, cache sizes of 32 KB, 64 KB and 128 KB, built-in tag RAMs for the cache, and line burst capability from DRAM to cache. It can address up to 16 MB of main memory with full support for EMS 4.0.

Hitachi Semiconductor

Chip Designation	Description	Download
HM50464P	A 64-kilobit Page Mode DRAM chip configured as 64Kx4. It was available in 120ns, 150ns, and 200ns speeds and usually came packaged in an 18-pin DIP. Each chip holds 32 KB of RAM.
HM5241605C	A 128Kx16 dual-bank SDRAM chip (512 KB total memory). Available in 57 MHz (-17), 66 MHz (-15) and 83 MHz (-12) speeds, and packaged in a 50-pin SOJ.
HB56A1325V	A 4 MB 72-pin non-parity SIMM RAM module comprising eight 20-pin Fast Page Mode DRAM chips (HM51400AS) configured as1024Kx32. It was available in 70ns speed.

Hynix / SK Hynix / Hyundai Semiconductor

Chip Designation	Description	Download
HY514400J	A 1024-kilobit Fast Page Mode DRAM chip configured as 1024Kx4. It was available in 70ns, 80ns, and 100ns speeds and usually came packaged in a 20-pin SOJ.
HY514264B	A 4096-kilobit EDO DRAM chip configured as 256Kx16. It was available in 50ns, 60ns, and 70ns speeds and usually came packaged in a 40-pin SOJ.
HY53C464	A 256-kilobit Page Mode DRAM chip configured as 64Kx4. It was available in 70ns, 80ns, 100ns and 120ns speeds and usually came packaged in an 18-pin DIP. It is pin-compatible with the Samsung KM41464.
HY53C256	A 256-kilobit Fast Page Mode DRAM chip configured as 256Kx1. It was available in 70ns, 80ns, 100ns and 120ns speeds and usually came packaged in a 16-pin DIP.
HY534256	A 1024-kilobit DRAM chip configured as 256Kx4. It was available in 60ns, 70ns, 80ns and 100ns speeds and usually came packaged in a 20-pin DIP. It is pin-compatible with Goldstar GM71C4256 and Fujitsu 81C4256A.
HY5117400A HYM532410 (SIMM)	A 16 MB 72-pin non-parity SIMM RAM module comprising eight 24-pin Fast Page Mode DRAM chips (HY5117400A) configured as 1024Kx32. It was available in 50ns, 60ns and 70ns speed. The HY5117400A DRAM is configured as 4096Kx4, so each chip holds 2 MB of RAM.
HY5117404BJ HYM532814 (SIMM)	A 32 MB 72-pin non-parity double-sided SIMM RAM module comprising sixteen 24-pin Extended Data Out (EDO) DRAM chips (HY5117404BJ). It was available in 50ns, 60ns and 70ns speed. The HY5117404BJ DRAM is configured as 4096Kx4, so each chip holds 2 MB of RAM.
HY5117804BJ	A 2 MB non-parity EDO RAM chip. It was available in 60ns, 70ns and 80ns speeds. The HY5117804BJ is configured as 2048Kx8, so each chip holds 2 MB of RAM. It was usually packaged in an 28-pin SOJ.
HY5118160BJC	A 2 MB non-parity FPM RAM chip. It was available in 60ns, 70ns and 80ns speeds. The HY5118160BJC is configured as 1Mx16, so each chip holds 2 MB of RAM. It was usually packaged in a 42-pin SOJ.
HY5118164BJC	A 2 MB non-parity EDO RAM chip. It was available in 60ns, 70ns and 80ns speeds. The HY5118164BJC is configured as 1Mx16, so each chip holds 2 MB of RAM. It was usually packaged in a 42-pin SOJ.

Inmos / SGS-Thomson

Chip Designation	Description	Download
IMS G170	A RAMDAC IC known to have been used on some Tseng Labs ET3000 cards and others. Provides 256-colour output from a palette of 262,144 colours.
IMS G171	A RAMDAC IC known to have been used on the majority of VGA-capable IBM PS/2 graphics cards. Provides 256-colour output from a palette of 262,144 colours, and ran at either 35 MHz or 50 MHz. Pin-compatible with the Analog Devices ADV476KN and Brooktree BT471KP and BT476KP. It came in a 28-pin DIP package.
IMS G173	An SVGA Hi-Color RAMDAC, supporting a palette of up to 65,536 colours. Additional features included 'PixMix' (picture-in-picture), DAC-fade (automatic fade-in and out) and 16-bit formats (5:5:5 TARGA, 5:6:5 XGA, 6:6:4 i860, and Select:5:5:5). It came in speeds of 66 and 80 MHz, and was packaged in either a 28-pin DIP or 44-pin PLCC. Fully backward-compatible with the G176.
IMS G174	An SVGA True-Color RAMDAC, supporting a palette of up to 16.7 million colours. Additional features included 'PixMix' (picture-in-picture), DAC-fade (automatic fade-in and out), 16-bit formats (5:5:5 TARGA, 5:6:5 XGA, 6:6:4 i860, and Select:5:5:5) and a 24-bit format of 8:8:8). It came in speeds of 66 and 85 MHz, and was packaged in only 44-pin PLCC form. Fully backward-compatible with the G176.
IMS G176	A Super VGA RAMDAC that supports up to 1,024 x 768 resolution at 72 Hz refresh rate. It came in speeds of 40, 50, 66 and 80 MHz, and supported additional features over the G170 and G171 such as 'anti-sparkle' (allows the palette to be continually updated without disturbance on-screen). It was their first SVGA palette DAC, and came in either a 28-pin DIP, 32-pin PLCC or 44-pin PLCC package.
IMS G177	A Super VGA RAMDAC similar to the G176, but supported [at the time] the world's lowest power consumption for an SVGA RAMDAC of just 5uA standby current, so assumed to be for the laptop/notebook market. It came only in a speed of 50 MHz, and was packaged in a 32-pin PLCC.

Intel

Chip Designation	Description	Download
8042	(1995) Datasheet for the Intel 8042 Universal Peripheral Interface.
iAPX 86/88	(1981) An early user manual for both the Intel 8088 and 8086 microprocessors.
iAPX 86/88/186/188	(1983) A programmers reference manual for the Intel 8088, 8086, 80188 and 80186 microprocessors.
iAPX 86/88/186/188	(June 1984) Part 1 of a guide to the Intel 8088, 8086, 80188 and 80186 microprocessors.
iAPX 86/88/186/188	(July 1984) Part 2 of a guide to the Intel 8088, 8086, 80188 and 80186 microprocessors.
iAPX 86/88/186/188	(1985) A user manual for the Intel 8088, 8086, 80188 and 80186 microprocessors.
iAPX286	(1982) Introduction to the Intel 80286 microprocessor.
iAPX286	(1983) Hardware Reference Manual for the Intel 80286 microprocessor.
iAPX286	(1983) Operating System Writers Guide for the Intel 80286 microprocessor.
80286	(1987) Hardware Reference Manual for the Intel 80286 microprocessor.
80286 / 80287	(1987) Programmers Reference Manual for the Intel 80286 microprocessor and Intel 80287 math coprocessor.
80386	(1986) Programmers Reference Manual for the Intel 80386 microprocessor.
80386	(1987) Programmers Reference Manual for the Intel 80386 microprocessor.
80386SX	(1989) Programmers Reference Manual for the Intel 80386SX microprocessor.
80386DX	(1990) Programmers Reference Manual for the Intel 80386DX microprocessor.
80386	(1986) Hardware Reference Manual for the Intel 80386 microprocessor.
80386DX	(1991) Hardware Reference Manual for the Intel 80386DX microprocessor.
80386EX	(1996) Datasheet for the Intel 80386EX microprocessor.
80386EX	(1996) Users Manual for the Intel 80386EX microprocessor.
80387	(1987) Programmers Reference Manual for the Intel 80387 math coprocessor.
i486	(1989) Datasheet for the Intel 80486 (i486) microprocessor.
i486	(1989) Datasheet for the Intel 80486 (i486) microprocessor.
i486	(1990) Programmers Reference Manual for the Intel 80486 (i486) microprocessor.
i486DX2	(1992) Datasheet for the Intel 80486DX2 microprocessor.
P21010	A 1-Mbit x 1 Fast Page Mode DRAM chip. Each chip is 16 KB, and was available in 70ns, 80ns, and 100ns speeds. Packaged in an 18-pin DIP.
P21464	A 256-Kbit (64-Kbit x 4) Fast Page Mode DRAM chip. Each chip is 16 KB, and was available in 80ns speeds. Packaged in an 18-pin DIP.
P21256	A 256-Kbit (256-Kbit x 1) Fast Page Mode DRAM chip.It was available in 80ns speeds. Packaged in an 16-pin DIP.
Pentium	(1995) Vol.1 of the Intel Pentium processor family Developers Manual.
Pentium	(1995) Vol.2 of the Intel Pentium processor family Developers Manual.
Pentium	(1995) Vol.3 of the Intel Pentium processor family Developers Manual.
Pentium	(1995) Specification update for the Intel Pentium processor.
Pentium 75-120	(1995) Datasheet for the Intel Pentium processors with 75 MHz to 120 MHz clock speeds.
Pentium 75-200	(1997) Datasheet for the Intel Pentium processors with 75 MHz to 200 MHz clock speeds.
Pentium / Pentium Pro	(1996) Processors and Related Products.
Pentium Pro	(1996) Vol.1 of the Intel Pentium Pro processor family Developers Manual.
Pentium Pro	(1996) Vol.2 of the Intel Pentium Pro processor family Developers Manual.
Pentium Pro	(1996) Vol.3 of the Intel Pentium Pro processor family Developers Manual.

ISSI (Integrated Silicon Solution)

Chip Designation	Description	Download
IS61C256AH	A 32-kilobit low-power CMOS SRAM chip configured as 32Kx8. It was available in 10ns, 12ns, 15ns, 20ns and 25ns speeds and usually came packaged in a 28-pin DIP.

LG Semiconductor

Chip Designation	Description	Download
GM71C17403	A 2 MB non-parity EDO 24-pin SOJ Out EDO DRAM chip. It was available in 50ns, 60ns and 70ns speed. The GM71C17403 is configured as 4096Kx4, so each chip holds 2 MB of RAM.

Micron Technology

Chip Designation	Description	Download
MT4067	A 256-kilobit DRAM chip configured as 64Kx4. It was available in 100ns, 120ns and 150ns speeds and usually came packaged in an 18-pin DIP. Each chip is 32 KB of RAM.
MT4C4256	A 1024-kilobit Fast Page Mode DRAM chip configured as 256Kx4. It was available in 70ns, 80ns, 100ns and 120ns speeds and usually came packaged in a 20-pin DIP. Each chip is 128 KB of RAM. It is pin-compatible with the Texas Instruments TMS44C256 and the Samsung KM44C256.
MT4C1024DJ	A 1024-kilobit Fast Page Mode DRAM chip configured as 1024Kx1. It was available in 70ns, 80ns, and 100ns speeds and usually came packaged in a 26-pin SOJ. Each chip is 128 KB of RAM.
MT4C4M4E8	A 2 MB non-parity EDO 24-pin SOJ EDO DRAM chip. It was available in 50ns and 60ns speeds. The MT4C4M4E8 is configured as 4096Kx4, so each chip holds 2 MB of RAM.
MT48LC16M4A2 MT48LC8M8A2 MT48LC4M16A2	An 8 MB SDRAM chip (often found on PC100 and PC133 DIMM modules), configured as 4Mx4 (marked "16M4"), 2Mx8 (marked 8M8), or 1Mx16 (marked "4M16") respectively. Refresh Count = 4K, Cycle Times range from 10ns (CL2 PC100), 7.5ns (CL3 PC133 or CL2 PC133), and 6ns (CL3 PC133 on 4M16 only). Packaged in a 54-pin TSOP.

Mitsubishi Electric

Chip Designation	Description	Download
M5L2764K	An ultravoilet-erasable EPROM chip configured as 64Kx8, often used for the BIOS chip on 1990s PC motherboards. It came in a 28-pin DIP.
M5M4416 M5M4416P	A 64-kilobit DRAM chip configured as 16Kx4. It was available in 120ns and 150ns speeds and usually came packaged in an 18-pin DIP.
M5M4464	A 256-kilobit DRAM chip configured as 64Kx4. It was available in 120ns and 150ns speeds and usually came packaged in an 18-pin DIP.
M5M41000BJ	A 1024-kilobit DRAM chip configured as 1024Kx1. Each chip holds 128 KB of RAM. It was available in 70ns, 80ns and 100ns speeds and usually came packaged in a 20-pin SOJ.

Motorola

Chip Designation	Description	Download
MCM41464 MCM41464AP MCM41464CP	A 256-kilobit DRAM chip configured as 64Kx4. It was available in 100ns, 120ns and 150ns speeds and usually came packaged in an 18-pin DIP.
MCM54100A	A 512 KB non-parity FPM 24-pin SOJ chip. It was available in 60ns, 70ns and 80ns speeds. The MCM54100A is configured as 4096Kx1, so each chip holds 512 KB of RAM.

Music Semiconductor

Chip Designation	Description	Download
TR9C1710	A RAMDAC chip that supported 8-bit colour depths (256 colours max.). It was available in 50, 66, 80, and 100 MHz speeds and usually came packaged in a 28-pin DIP or 44-pin PLCC package.
MU9C1880	A RAMDAC chip that supported 24-bit colour depths (16.7 million colours). It was available in 90 MHz speeds and came in a 44-pin PLCC package.

NEC

Chip Designation	Description	Download
D41464 D41464C D41464L PD41464C PD41464L	Also known as uPD41464, the 41464 is a 256-kilobit DRAM chip configured as 64Kx4. It was available in 80ns, 100ns and 120ns speeds and usually came packaged in an 18-pin DIP.
uPD41256	A 256-kilobit Fast Page Mode DRAM chip configured as 256Kx1. It was available in 80ns, 85ns and 100ns speeds and usually came packaged in a 16-pin DIP. Appears to be pin-compatible with the Siemens HYB41256 and OKI MSM41256. These were often used on XT and 286 motherboards.
V20HL	Officially branded uPD70108H and uPD70116H, the V20 CMOS 16-bit microprocessor is an enhanced variant of the Intel 8088 CPU, able to operate at up to 16 MHz and incorporating a stop clock function to reduce power consumption. They can run at either 5V or 3V input voltages. Available as uPD70108HCZ (40-pin DIP), uPD70108HGC (52-pin QFP) and uPD70108HLM (44-pin QFJ/PLCC)

Nippon Steel Semiconductor

Chip Designation	Description	Download
NN514265 NN514265A NN514265AJ NN514265ALJ NN514265ALP NN514265ALR	A 1024-kilobit DRAM chip configured as 256Kx4. It was available in 40ns, 45ns, 50ns, 60ns and 70ns speeds and usually came packaged in a 40-pin SOJ.

Oak Technology

Chip Designation	Description	Download
OTI-031	Part of Oak Technology's IBM PS/2 Model 30-compatible 4-chip chipset. OTI-031 is the System Controller IC which works with both Intel 8088 and 8086 as well as NEC V30 microprocessors. Supported CPU speeds are 8 and 10 MHz.
OTI-032	Part of Oak Technology's IBM PS/2 Model 30-compatible 4-chip chipset. OTI-032 is the I/O Controller IC for keyboard, mouse, serial and parallel ports.
OTI-033	Part of Oak Technology's IBM PS/2 Model 30-compatible 4-chip chipset. OTI-033 is the floppy disk controller IC, and is fully compatible with the uPD765A standard
OTI-034	Part of Oak Technology's IBM PS/2 Model 30-compatible 4-chip chipset. OTI-034 is the address/data buffer driver IC.
OTI-036	(1987?) A Super VGA RAMDAC able to display up to 256 colours from a palette of 262,144. Pin-compatible with the Inmos G171, Analog Devices ADV476KN and Brooktree BT471KP and BT476KP, so this chip was used on some Tseng Labs ET3000-based video cards. Supported speeds of 35 MHz and 50 MHz. It came in a 28-pin DIP package.
OTI-037	(1988) A VGA graphics controller for XT and AT-compatible systems. Fully backward-compatible with MDA, Hercules, CGA and EGA. Up to 800 x 600 resolution in 16 colours and 132-column text mode. It came in a 100-pin PFP package.

OKI Semiconductor

Chip Designation	Description	Download
M41464	A 256-kilobit Page Mode DRAM chip configured as 64Kx4. It was available in 100, 120ns and 150ns speeds and usually came packaged in an 18-pin DIP. It is pin-compatible with the Hynix HY53C464 and Samsung KM41464.
M514256 MCM514256A	A 1-megabit Fast Page Mode DRAM chip configured as 256Kx4. It was available in 70ns and 80ns speeds and usually came packaged in a 20-pin DIP or 26-pin SOJ.
MSC2331A	A 30-pin SIMM card with two 256Kx4 DRAMs in SOJ (M514256A) and a 256-kilobit DRAM in PLCC (M51C256A), totalling 256 KB on the SIMM card. These chips come in 70ns, 80ns and 100ns speeds.
MSM41256A	A 256-kilobit Fast Page Mode DRAM chip configured as 256Kx1. It was available in 100ns, 120ns and 150ns speeds and usually came packaged in a 16-pin DIP. Appears to be pin-compatible with the Siemens HYB41256 and NEC uPD41256. These were often used on XT and 286 motherboards.
MSM6388	A solid state recorder IC. In my Orchid Fahrenheit VA/VLB retro review I identified that this chip is used, and is possibly pin-compatible with the ESS ES488 audio chip.
MSM65512	An 8-bit microcontroller with 8 KB of onboard memory. It usually came packaged in a 44-pin PLCC but was also manufactured in a 40-pin DIP and 64-pin PQFP package.

OPTi

Chip Designation	Description	Download
82C391 / 82C392	The 82C391 and 82C392 were used on 80286 and 80386SX motherboards. They were part of the OPTi-386WB PC/AT chipset.
82C465	OPTi Single-Chip Mixed-Voltage Solution for Notebook data book
82C930	An integrated sound controller, with built-in support for Ad Lib FM synthesis, Sound Blaster Pro and Microsoft Windows Sound System (WSS). It also has an MPU-401 UART MIDI interface.
82C933	Dubbed "OPTiSound", 82C933 is a Plug & Play integrated sound controller, with built-in support for Ad Lib FM synthesis, Sound Blaster Pro and Microsoft Windows Sound System (WSS). It also has an MPU-401 UART MIDI interface.

Paradise Systems

See also the Western Digital section for cards and chipsets released in 1986 and later.

Chip Designation	Description	Download
PVGA1A	A Super VGA chipset from 1988 (this datasheet is an updated one from Oct 1990). PVGA1A can address from 256 KB up to 1 MB of video memory, offering resolutions up to 800 x 600 in 16 colours, or 640 x 480 in 256 colours. Its maximum clock rate is 40 MHz. The PVGA1A chip came in both a 100-pin PLCC or 100-pin PFP JEDEC package.
PVGA1A	A slightly different datasheet for the PVGA1A (but also from October 1990).

Panasonic / Matsushita

Chip Designation	Description	Download
MN41C4256	A 1024-kilobit DRAM chip configured as 256Kx4. It was available in 60ns, 70ns and 80ns speeds and usually came packaged in a 20-pin DIP. It is pin-compatible with the Micron MT4C4256, Samsung KM44C256 and Texas Instruments TMS44C256.

Philips Semiconductor / Royal Philips Semiconductor

Chip Designation	Description	Download
SAA7780	A high-performance PCI audio accelerator designed and manufactured by VLSI (before Philips acquired them), called "ThunderBird". Combines the most compelling 3D, quadraphonic and music synthesis technologies available with the powerful yet cost effective ActiMedia(TM) DSP architecture. Full H/W acceleration of DirectSoundTM, 3D audio, music synthesis, and gameport functions guarantees exceptional system performance. Used on Rhythmic Edge (PSC-703), Seismic Edge (PSC-705), and Acoustic Edge (PSC-706) sounds cards from Philips.
SAA7785	The successor to the original SAA7780 ThunderBird chip, "ThunderBird Avenger" added 5.1 surround sound over SAA7780's 4 channels. Used on later revisions of Rhythmic Edge (PSC-703), Seismic Edge (PSC-705), and Acoustic Edge (PSC-706) sounds cards from Philips.

Roland

Chip Designation	Description	Download
MPU-401AT	Roland MPU-401AT Service Notes (First Edition).
MT-32	Roland MT-32 Service Notes (Third Edition).
SC-55 Mk.I	Roland SC-55 Mk.I Service Notes (First Edition).
SC-55 Mk.II	Roland SC-55 Mk.II Service Notes (First Edition).
SC-88	Roland SC-88 Service Notes (First Edition).
SC-88VL	Roland SC-88VL Service Notes (First Edition).
SC-88 Pro	Roland SC-88 Pro Service Notes (First Edition).
SCC-1	Roland SCC-1 Service Notes (First Edition).

S3

Chip Designation	Description	Download
Trio64	Product Overview from 1996
Trio64V+	Product Overview from 1996
Trio64UV+	Product Overview from 1996
Trio64V2DX/GX	Product Overview from 1996
ViRGE (86C325)	Product Overview from 1996
ViRGE (86C325)	Datasheet from 1996
ViRGE/VX	Product Overview from 1996
ViRGE/DX (86C375) and GX (86C385)	Product Overview from 1996
86C617	Product Overview from 1996
86C617	May 1997 preliminary datasheet. S3's Sonic Vibes audio accelerator chipset comprises an OPL3 clone called "S3FM" and an onboard wavetable synthesizer with reverb (if optional external SRAM chip is used) and chorus effects. This wavetable uses software-based sample files in the .DLS format. The 86C617 came in a 160-pin PQFP or 176-pin TQFP package.
Savage3D	A product information sheet from S3, dated 1998

Samsung Semiconductor

Chip Designation	Description	Download
KDA0471 KDA0476 KDA0478	RAMDACs from 1992, commonly seen on Diamond SpeedSTAR 24 cards. The KDA0478 is 24-bit (16.7 million colours), while I believe the other two are only 8-bit (256 colours standard VGA).
KM41256 KM41256AP	A 256-kilobit Page Mode DRAM chip configured as 128Kx1. It was available in 100ns, 120ns and 150ns speeds and usually came packaged in a 16-pin DIP.
KM41464 KM41464A KM41464AJ KM41464AP KM41464AZ	A 256-kilobit Page Mode DRAM chip configured as 64Kx4. It was available in 120ns and 150ns speeds and usually came packaged in an 18-pin DIP. It is pin-compatible with the Hynix HY53C464.
KM428C256	A dual-port video RAM chip with 256Kx8 RAM port and 512x8 SAM port. It was available in 60ns, 70ns and 80ns speeds, and came packaged in a 40-pin SOJ or a 40/44-pin TSOP package.
KM44C256 KM44C256A KM44C256AJ KM44C256B KM44C256BL	A 1024-kilobit Fast Page Mode DRAM chip configured as 256Kx4. It was available in 80ns, 100ns and 120ns speeds and usually came packaged in a 20-pin DIP. It is pin-compatible with the Micron Technology MT4C4256 and the Texas Instruments TMS44C256. Each chip is 128 KB of RAM.
KM41C1000 KM491000 (SIPP) KM591000 (SIMM)	A 1 MB RAM module comprising eight 20-pin 1024-kilobit Page Mode DRAM chips (KM41C1000) configured as 256Kx4, and one 18-pin 256-kilobit DRAM chip (GM71C256A) configured as 256Kx1 for parity. It was available in 70ns, 80ns, and 100ns speeds.
KM4132G271 KM4132G271A	A 128Kx32 dual-bank SGRAM chip (1 MB total memory). Available in 83 MHz (-12), 100 MHz (-10) and 125 MHz (-8) speeds, and packaged in a 100-pin QFP.
KMM5322000 (SIMM)	An 8 MB 72-pin non-parity SIMM RAM module comprising sixteen 20-pin 1024-kilobit Fast Page Mode DRAM chips configured as 1024Kx4. It was available in 50ns, 60ns, 70ns, and 80ns speeds.
KMM5361000 (SIMM)	A 4 MB 72-pin parity SIMM RAM module comprising eight 20-pin 1024-kilobit Fast Page Mode DRAM chips configured as 1024Kx4, and four 20-pin 1024-kilobit DRAM chips configured as 1024Kx1. It was available in 70ns, 80ns, and 100ns speeds.
KMM5364103 (SIMM)	A 16 MB 72-pin non-parity SIMM RAM module comprising eight 24-pin 4096-kilobit Fast Page Mode DRAM chips configured as 4096Kx4. It was available in 50ns and 60ns speeds.
KM6865BP	An 8-kilobit low-power CMOS SRAM chip configured as 8Kx8. It was available in 12ns, 15ns, 20ns and 25ns speeds and usually came packaged in a 28-pin DIP.

Sanyo

Chip Designation	Description	Download
LC3M08100 LC3M09100 (SIPP/SIMM)	A 1 MB 30-pin SIPP/SIMM RAM module comprising eight (8100) or nine (9100) 20-pin 1024-kilobit Page Mode DRAM chips configured as 256Kx4. The 9100 was available in 70ns, 80ns and 100ns speeds.
LC324256P	A 1024-kilobit Fast Page Mode (FPM) DRAM chip configured as 256Kx4. It was available in 80ns speed only, and usually came packaged in a 20-pin DIP.

Sharp

Chip Designation	Description	Download
LH2464	A 64-kilobit Fast Page Mode (FPM) DRAM chip configured as 64Kx4. It was available in 100ns, 120ns, 150ns and 200ns speeds, and usually came packaged in an 18-pin DIP.

Siemens / Siemtek

Chip Designation	Description	Download
HYB41256	A 256-kilobit Fast Page Mode DRAM chip configured as 256Kx1. It was available in 100ns, 120ns and 150ns speeds and usually came packaged in a 16-pin DIP. Appears to be pin-compatible with the OKI MSM41256A and NEC uPD41256.
HYB514400BJ	A 1024-kilobit Fast Page Mode (FPM) DRAM chip configured as 256Kx4. It was available in 50ns, 60ns and 70ns speeds and usually came packaged in a 20-pin DIP. It is pin-compatible with the Micron Technology MT4C4256 and the Texas Instruments TMS44C256.
HYB5117405BJ	A 4096-kilobit Extended Data Out (EDO) DRAM chip configured as 4096Kx4. It was available in 50ns, 60ns and 70ns speeds and usually came packaged in a 24-pin SOJ.
SAB82C171	A Super VGA RAMDAC, able to display 256 colours from a palette of 262,144 in 800 x 600 resolution. This chip (or one compatible) was used on many Tseng Labs ET3000 cards. Came in either 35 MHz or 50 MHz speed, and was packaged in a 28-pin DIP.
SAB82C176	A Super VGA RAMDAC that is pin-compatible with the SAB82C171. I'm not sure of the benefits of the 176 over the 171. Able to display 256 colours from a palette of 262,144 in 800 x 600 resolution. This chip (or one compatible) was used on many Tseng Labs ET3000 cards. Came in either 40 MHz or 50 MHz speed, and was packaged in a 28-pin DIP.

Sierra Semiconductor

Chip Designation	Description	Download
SC11482 SC11483 SC11484	A HICOLOR RAMDAC from 1989. It supported "HICOLOR" which is a 16-bit colour depth (32,768 colours). It came in either a 28-pin DIP package or a 44-pin PLCC.
SC15025 SC15026	A HICOLOR-24 (TrueColor) RAMDAC from 1990(?). It supported "HICOLOR-24", a 24-bit colour depth (16.8 million colours) and came in either a 28-pin DIP package or a 44-pin PLCC.
SC18000 SC18005	A Multimedia System Controller chip from 1992. It supported Ad Lib and Sound Blaster support, plus the Aria sampled instrument synthesizer and a subset of the Roland MPU-401 MIDI command set. It came in a 144-pin PLCC. The chip was used on Prometheus ARIA 16 cards and others.
W30C524	A video RAMDAC from 1995 with hardware 2D video zoom capability, supporting up to 1280 x 1024 resolution and up to 24-bit colour depths. The W30C524 came in a 68-pin PLCC package.

SiS (Silicon Integrated Systems)

Chip Designation	Description	Download
85C310	ISA 32-bit Cache/Memory Controller for 80386-based systems
85C360	ISA 386 Single Chip Controller	-
85C460	ISA 80386DX and 80486DX2/DX/SX Single Chip Controller
85C461	ISA 80386DX and 80486 Single Chip Controller	-
85C471	ISA & VLB Green PC single chip controller for Intel 80486DX2/DX/SX/SL Enhanced, P24D/P24T/P24C CPU, Cyrix Cx486S2 (M6/M7) CPU and AMD Am486DXL/DXL2 CPUs.
85C496/497	486 Green PC VESA/ISA/PCI Chipset - a 2-chip solution with 496 as PCI/CPU memory controller, and 497 as AT Bus controller and Megacell. Supports Intel 80486, SL Enhanced, P24D/P24T/DX4 CPUs, AMD 486 and Enhanced 486, and Cyrix Cx486 (M7) and Cx5x86 CPUs.
SiS300	SiS300 2D/3D/Video/DVD Accelerator. The first chip in their 128-bit graphics accelerator family. Supports AGP2x/4x and PCI rev 2.2.
SiS301	Accompanying chip for SiS VGA chip. Integrates an NTSC/PAL video encoder, transmitter for video scaling on TFT displays, and analog RGB port to support a secondary CRT monitor.
SiS305	Part of the SiS 128-bit graphics accelerator family. Integrates a 2X AGP controller with full side-band support, a 128-bit 3D/2D graphics engine and a motion compensation accelerator. It offers a complete 64/32-bit memory data bus. Embedded with a 128-bit 2D engine, it can achieve ultra high 2D performance with the maximum memory bandwidth up to 1 GB/s
SiS5597/5598	Pentium ISA/PCI Chipset.

ST Microelectronics

Chip Designation	Description	Download
M27C256B	A 32 KB EPROM (32Kbx8) commonly used for system and video BIOS. It was available in speeds from 45ns to 250ns, and came packaged in a 28-pin DIP or 32-pin PLCC. In DIP form, some have a window for erasure via ultra-violet (UV) light while others are closed. It is pin-compatible with the Texas Instruments TMS27C256 and AMD Am27C256.
M27C512	A 64 KB EPROM (64Kbx8) commonly used for system BIOS. It was available in speeds from 45ns to 250ns, and came packaged in a 28-pin DIP, 32-pin PLCC or 28-pin TSOP. In DIP form, some have a window for erasure via ultra-violet (UV) light while others are closed. The closed ones are OTP (One-Time Programmable).
M27C1001	A 128 KB EPROM (128Kbx8) commonly used for system BIOS. It was available in speeds from 35ns to 250ns, and came packaged in a 32-pin DIP, 32-pin PLCC or 32-pin TSOP. In DIP form, some have a window for erasure via ultra-violet (UV) light while others are closed. The closed ones are OTP (One-Time Programmable).

Texas Instruments

Chip Designation	Description	Download
TACT80101	A PC/XT integration chip comprising 82C84 clock generator, 82C88 bus controller, 82C37 4-channel DMA controller, 82C59 8-channel interrupt controller, 82C53 3-channel timer and 82C56 peripheral controller. It came in a 100-pin PFP package. The datasheet for this is for the pin-compatible clone from UMC.
TACT82411	(1989) An AT single-chip chipset for 80286 systems from 12 MHz up to 20 MHz. Also supports system boards that use the 80386SX. Available in a 208-pin QFP package.
TACT83000	(1990) An AT chipset for 80386SX and 80386DX systems up to 33 MHz.
TMS27C010 TMS27C010A	A 128 KB EPROM (128Kbx8) commonly used for system BIOS. It was available in speeds of 100, 120, 150 and 200ns, and came packaged in a 32-pin DIP or 32-pin PLCC. It came in both UV (ultraviolet) erasable and OTP (one-time programmable) versions.
TMS27C256	A 32 KB EPROM (32Kbx8) commonly used for system and video BIOS. It was available in speeds from 100ns to 250ns, and came packaged in a 28-pin DIP or 32-pin PLCC. It is pin-compatible with the ST Microelectronics M27C256B and AMD Am27C256.
TMS4164	A 64-kilobit DRAM chip configured as 64Kx1. It was available in 120ns, 150ns, and 200ns speeds and usually came packaged in an 16-pin DIP. Each chip stores 8 KB of RAM.
TMS4416	A 64-kilobit DRAM chip configured as 16Kx4. It was available in 120ns, 150ns and 200ns speeds and usually came packaged in an 18-pin DIP. Each chip stores 8 KB of RAM.
TMS4464	A 256-kilobit DRAM chip configured as 64Kx4. It was available in 120ns, 150ns and 200ns speeds and usually came packaged in an 18-pin DIP. Each chip stores 32 KB of RAM.
TMS44C256	A 1024-kilobit DRAM chip configured as 256Kx4. It was available in 60ns to 120ns speeds and usually came packaged in a 20-pin DIP. It is pin-compatible with the Micron MT4C4256 and the Samsung KM44C256.
TMS416409 TMS417409	A 4096-kilobit Extended Data Out (EDO) DRAM chip configured as 4096Kx4. It was available in 50ns, 60ns and 70ns speeds and usually came packaged in a 24- or 26-pin SOJ.
TM024EAD9 TM024GAD8 TMS4C1024	A 1 MB RAM module comprising nine (EAD9) or eight (GAD8) 20-pin 1024-kilobit Page Mode DRAM chips (TMS4C1024) configured as 256Kx4. It was available in 100ns, 120ns, and 150ns speeds. The first download is the earlier release that supported these slower speeds and was available in SIPP and SIMM form. The second download is the November 1990 revision that brought speeds down to 60ns, 70ns, and 80ns, and was only available in SIMM form.
TVP3026	A 64-bit RAMDAC from 1996 able to support 24-bit True Color colour depths.

Toshiba

Chip Designation	Description	Download
TC524258 TC524258A TC524258AZ TC524258BJ	A 1024-kilobit Fast Page Mode DRAM chip configured as 256Kx4. It was available in 60ns, 70ns, 80ns, and 100ns speeds and usually came packaged in a 20-pin DIP.	-
TC528267 TC528267J	A 2-megabit CMOS Multiport DRAM chip configured as 2048x8 with high-speed serial access memory (SAM) port. It was available in 70ns and 80ns speeds, and usually came packaged in a 40-pin SOJ or 44-pin SOP.
TC51100AJ TC514400J THM361020S (SIMM) THM361020SG (SIMM)	A 4 MB 72-pin parity SIMM RAM module comprising eight 20-pin 1024-kilobit Fast Page Mode DRAM chips (TC514400J) configured as 1024Kx36, and four 20-pin 1024-kilobit DRAM chips (TC51100AJ) for parity. It was available in 80ns and 100ns speeds. The 'SG' suffix indicates gold contacts, whereas the 'S' suffix indicates tin contacts.

UMC

Chip Designation	Description	Download
UM61256AK	A 256-kilobit SRAM chip configured as 32Kx8. It was available in 120ns, 150ns and 200ns speeds and usually came packaged in a 28-pin DIP.
UM6845EB	A CRTC, or Cathode Ray Tube Controller. Found on numerous early PC graphics cards, specifically on monochrome and Hercules monochrome (HGC) cards.
UM82C088	A PC/XT integration chip comprising 82C84 clock generator, 82C88 bus controller, 82C37 4-channel DMA controller, 82C59 8-channel interrupt controller, 82C53 3-channel timer and 82C56 peripheral controller. It came in a 100-pin PFP package.
UM82C210	A 16-bit 286 and 386SX motherboard chipset, comprising three chips: UM82C211 (System Controller), UM82C212 (Memory Controller) , and UM82C215 (Data /Address Buffer).
UM82C288	A bus controller chip for 80286 systems that ran at 10 or 12.5 MHz. It came in a 20-pin DIP package.
1986 Data Book	The UMC 1986 Data Book

Vitelic / Mosel Vitelic

Chip Designation	Description	Download
V53C104 V53C104A V53C104AK V53C104FP	The 1024-kilobit (128 KB) V53C104 was a CMOS Fast Page DRAM chip configured as 256Kx4. It was available in 85ns, 100ns and 120ns speeds and usually came packaged in a 20-pin DIP or 26-pin SOJ.
V53C16258 V53C16258H V53C16258HK	The 4096-kilobit (512 KB) V53C16258 was a CMOS EDO DRAM chip configured as 256Kx16. It was available in 25ns (100 MHz) to 50ns speeds and usually came packaged in a 40-pin SOJ.
V53C818HK	The 1 MB V53C818HK was a CMOS EDO DRAM chip configured as 512Kx16. It was available in 30ns to 50ns speeds and usually came packaged in a 40-pin SOJ.

Western Digital

Chip Designation	Description	Download
WD90C00 (PVGA1B)	A VGA display controller chipset from 1990 which was pin-compatible with the PVGA1A. Supports both MCA and 8-bit and 16-bit AT (ISA) buses. Supports resolutions up to 1,024 x 768 in 16 colours interlaced (for non-interlaced, requires an external 56 MHz clock and 80ns DRAMs), or 800 x 600 in 256 colours. 45 MHz core clock and 56 MHz memory clock. Up to 1 MB of display memory supported (70ns or 80ns). The WD90C00 came in a 100-pin PLCC or PQFP package.
WD90C10 (PVGA1M)	A VGA display controller chipset from 1990 which was pin-compatible with the WD90C11 and WD90C12. Supports both MCA and 8-bit and 16-bit AT (ISA) buses. Supports resolutions up to 1,024 x 768 in 4 colours or 800 x 600 in 16 colours. 65 MHz core clock and 42 MHz memory clock. Up to 256KB display memory supported (70ns or 80ns). The WD90C10 came in a 132-pin PFP package.
WD90C11 WD90C11A	A VGA display controller chipset from 1991. Supports both MCA and 8-bit and 16-bit AT (ISA) buses. Supports resolutions up to 1,024 x 768 in 16 colours or 800 x 600 in 256 colours. 65 MHz core clock and 42 MHz memory clock (45 MHz in WD90C11A). 256KB and 512KB display memory supported (70ns or 80ns). The WD90C11/A came in a 132-pin PFP package.
WD90C22	A VGA display controller chipset that was a superset of the earlier WD90C00 chipset. Supports both MCA and 8-bit and 16-bit AT (ISA) buses. Supports a 45 MHz core clock. Contains an 18-bit RAMDAC for HiColor modes. 256KB, 512KB and 1 MB display memory supported.
WD90C24 WD90C24A	A VGA accelerated display controller chipset designed for low-power applications with ISA and VESA Local Bus interfaces. It features hardware Windows (2D) acceleration with BitBlt and line draw functions, and a programmable 64x64 cursor. WD90C24 has a 16- or 32-bit memory interface from 256 KB up to 1 MB (70, 80 or 100ns), and supports up to 65,536 colours (HiColor) at 640x480. The maximum resolution is 1024x768 in 256 colours noninterlaced at 60 Hz, or 1024x768x16 interlaced at 43 Hz.
WD90C30	A VGA display controller chipset from 1992, supporting resolutions up to 1024 x 768 in 256 colours (72 Hz refresh rate noninterlaced), plus 132-column text mode. It is fully backward-compatible with VGA, EGA, CGA, MDA, Hercules and AT&T 6300. From 256KB up to 1 MB of DRAM video memory is supported. Cards that use the 90C30 can run at a core clock of up to 80 MHz with a 50 MHz memory clock. To be used with an external RAMDAC.
WD90C31	A VGA display controller chipset from 1991, supporting resolutions up to 1024 x 768 in 256 colours (72 Hz refresh rate noninterlaced), plus 132-column text mode. It is fully backward-compatible with VGA, EGA, CGA, MDA, Hercules and AT&T 6300. From 256KB up to 1 MB of DRAM video memory is supported (60, 70, 80 or 100ns). Cards that use the WD90C31 can run at a core clock of up to 80 MHz with a 50 MHz memory clock. It came in a 132-pin PQFP package.
WD90C33	A VGA display controller chipset from 1993, supporting resolutions up to 1024 x 768 in 256 colours, plus 132-column text mode. It is fully backward-compatible with VGA, EGA, CGA, MDA, Hercules and AT&T 6300. From 256KB up to 1 MB of DRAM video memory is supported. Cards that use the 90C33 can run at a core clock of up to 80 MHz with a 50 MHz memory clock. To be used with an external RAMDAC.
WD9710	A VGA and full motion 64-bit video accelerator chipset launched in March 1995. Supporting PCI and VESA Local Bus interfaces, the chip also contains a 24-bit RAMDAC for TrueColor modes (16.7 million colours). Up to 2 MB of fast display memory with a throughput of 320 MB/sec.

Winbond

Chip Designation	Description	Download
W2465AK	An 8-kilobit low-power CMOS SRAM chip configured as 8Kx8. It was available in 12ns, 15ns and 20ns speeds and usually came packaged in a 28-pin DIP.
W24129AK	A 16-kilobit low-power CMOS SRAM chip configured as 16Kx8. It was available in 12ns and 15ns speeds and usually came packaged in a 28-pin DIP.
W27C512	An EEPROM chip configured as 64Kx8, often used as the BIOS chip on 486 motherboards. It comes in either a 28-pin DIP or 32-pin PLCC package.
W29EE011	A 128 KB EPROM chip configured as 128Kx8, and was commonly used as the BIOS ROM chip on 486 PC motherboards. It came in both 90ns and 150ns versions. It was available in a 32-pin DIP, TSOP or PLCC.

Yamaha

Chip Designation	Description	Download
MU50	Yamaha MU50 Service Manual.
MU90R	Yamaha MU90R Service Manual.
MU100	Yamaha MU100 Service Manual.
YAC512	(1988) YAC512 is a Digital-to-Analog Converter (DAC) chip, typically used to support a YMF262. Available as YAC-512M (16-pin SOC).
YAC513	(1994) YAC513 is a Digital-to-Analog Converter (DAC) chip, typically used to support a YMF271 (OPx) or YMF278 (OPL4). Available as YAC-513D (16-pin DIP) or YAC-513M (16-pin SOP).
YAC516	(1997) YAC516 is a Digital-to-Analog Converter (DAC) chip, typically used for notebook PCs due to its 3.3V voltage support. Available as YAC516-E (24-pin SSOP) or YAC516-M (28-pin SOP).
YMF262	Often referred to as OPL3. An FM sound source IC. Register-compatible with the earlier YM3812 (OPL2).
YMF289B	Often referred to as OPL3-L. Low-voltage variant of the YMF262, designed for notebook PCs and PCMCIA cards. Register-compatible with YMF262.
YMF704-C	Often referred to as OPL4-ML. Integrates an OPL3 FM synthesizer, Wavetable synthesizer and a Wavetable ROM.
YMF715E	Often referred to as OPL3-SA3. A single-chip audio chip that integrates the OPL3 and its DAC, CODEC and MPU-401 MIDI interface and 3D enhanced controller.
YMF724	Often referred to as DS-1. An audio controller for the PCI bus, the YMF724 also integrates support for legacy audio including FM synthesizer, Sound Blaster Pro and MPU-401 UART mode by using Distributed DMA protocols as well as serialized IRQ compatibility. YMF724 also supports General MIDI including Yamaha's XG as well as DirectSound/DirectMusic.
YMF740-C	Similar to YMF724, but added 4-channel output over the previous 2.

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