DOS Days

Elitegroup Computer Systems

Elitegroup was a manufacturer of motherboards and graphics cards for the IBM PC and its compatibles during the DOS era.

They discontinued their peripheral card division in around 1999, focussing instead on motherboards.

Elitegroup Computer Systems, Co., Ltd. resided at No. 1, Lane 159, Li Teh Road, Peitou,Taipei, Taiwan, R.O.C., Tel: 886-2-896-5859, Fax: 886-2-895-1294, Web Site: www.ecs.com.tw

In the USA, Elitegroup Computer Systems, Inc. resided at 45401 Research Ave., Fremont, CA 94539, Tel: (510) 226-7333, Fax: (510) 226-7350, Site: www.ecsusa.com

 

Motherboards

ECS-386/32

Year: 1989
Type: 80386DX
Form Factor: Baby AT
Power Connector: AT
Keyboard Connector: AT
Chipset: Chips & Technologies CS8230
Memory: 8 x 30-pin SIMM (or 32-bit proprietary RAM card)
Slots: 7 x ISA 16-bit, 1 x ISA 8-bit
BIOS: American Megatrends Inc.
BIOS Chips: 2 x 27C256 (High and Low)
BIOS Dates: 03/03/89
Known Board Revisions: -

User Manual

P5GX-M

Year: 1998
Type: Socket 7
Form Factor: Micro ATX
Chipset: Cyrix CX5530
Memory: 2 x 168-pin DIMM slots
Slots: 2 x 16-bit ISA, 2 x PCI
Power Connector: ATX
BIOS: Award
BIOS Dates: 09/29/1998
Known Board Revisions: 1.1

Supports *only* the Cyrix/National Semiconductor MediaGXm CPU running at 200, 233 or 266 MHz.

P5HX-A

Year: 1996
Type: Socket 7
Form Factor: Baby AT (330mm x 218mm)
Chipset: Intel 430HX
Memory: 4 x 72-pin SIMM slots (4 banks) - max 256 MB.
Slots: 4 x 16-bit ISA, 4 x PCI
Power Connector: AT and ATX
BIOS: Award
BIOS Dates: 04/01/96
Known Board Revisions: 1.0, 2.1, 2.3

Supports Intel Pentium, Pentium MMX, AMD K5 and K6, and also works with Cyrix 6x86 CPUs from P120+ up to P166.

The memory slots will take either FPM or EDO RAM. The board also has a COAST slot for adding L2 cache.

P5HX-B

Year: 1996
Type: Socket 7
Form Factor: Baby AT (330mm x 218mm)
Chipset: Intel 430HX
Memory: 4 x 72-pin SIMM slots (4 banks) - max 256 MB.
Slots: 4 x 16-bit ISA, 4 x PCI
Power Connector: AT
BIOS: Award
BIOS Dates:
Known Board Revisions: 1.1

Supports Intel Pentium and MMX (75 MHz up to 200 MHz), AMD K5 and K6, and also works with Cyrix 6x86 CPUs from P120+ up to P166.

The memory slots will take either FPM or EDO RAM. The board also has a COAST slot for adding up to 256 KB more of L2 cache (on top of 256 KB on the mainboard itself). Jumpers JP15 and JP16 tell the board how much cache you have installed.

FSB speeds can be set to either 50, 60 or 66 MHz.

P5VX-A

Year: 1996
Type: Socket 7
Form Factor: ATX
Chipset: Intel 430VX Triton III
Memory: 4 x 72-pin SIMM slots (2 banks), 1 x 168-pin DIMM. Max. 256 MB total memory.
Slots: 4 x PCI and 4 x ISA slots
Power Connector: AT (ATX is optional)
BIOS: Award
BIOS Dates: 05/08/96, 02/19/97
Known BIOS Strings:
02/19/97-i430VX-2A59GK99C-00
Known Board Revisions: 1.0, 1.1

Works with Intel Pentium 75-200 MHz, (P54C and P55C) and Cyrix 6x86 CPUs from P120+ up to P166. Also supports AMD K5 and K6 CPUs. CPU voltage selections are 3.3V, 3.525V, 2.8V and 2.5V.

A slightly odd layout this board has, with memory slots in the centre of the board. It also has a COAST slot to expand the onboard L2 cache size.

The board supports EDO RAM.

 

P5VX-BE

Year: 1995
Type: Socket 7
Form Factor: Baby AT
Chipset: Intel 430VX Triton III
Memory: 4 x 72-pin SIMM slots (FPM and EDO supported), 1 x 168-pin DIMM. Maximum 256 MB.
Power Connector: AT
Keyboard Connector: AT
Slots: 3 x ISA (16-bit), 4 x PCI
Power Connector: AT
BIOS: Award
BIOS Dates: -
Known Board Revisions: 1.1, 2.0, 3.0

User Manual

UL486

Year: 1992
Type: Socket 3?
Form Factor: AT
Chipset: UMC 82C482F / 82C481BF
BIOS: AMI
Slots: 1 x 8-bit ISA, 7 x 16-bit ISA, 1 x 32-bit VLB
Memory: 8 x 30-pin SIMM slots (max. 32MB FPM)
Known Board Revisions: 1.3
BIOS Strings:
40-0100-001131-00101111-121291-UMCAUTO-F

The UL 486 motherboard supports 80486SX, DX, and DX-2 CPUs. In addition it has an Overdrive socket that is suitable for the Intel 80487 upgrade processor as well as the P23T OverDrive chip. Supported CPU clock frequencies range from 16 MHz up to 66 MHz.

The L2 cache can be configured from 64KB up to 256KB via its eight 28-pin sockets plus 1 TAG RAM socket.

UM486V AIO / AIO(DIP)

Year: 1993
Type: Socket 3
Form Factor: Baby AT
Chipset: UMC 82C482F / 82C481BF
Memory: 30-pin SIMM (2 banks of 4 slots each)
Slots: 6 x ISA 16-bit, 2 x VLB
Power Connector: AT (P8/P9)
BIOS: AMI (486DX ISA BIOS)
Known Board Revisions: v2.0

This board comes with 256 KB L2 cache, and supports 5V 80486 CPUs.

UM8810P AIO

Year: 1995
Type: Socket 3
Form Factor: Baby AT
Chipset: UMC 8881 / 8886
Slots: 4 x ISA (16-bit), 3 x PCI
Memory: 4 x 72-pin (4 banks) - max. 128 MB.
BIOS: Phoenix
Power Connector: AT
Known Board Revisions: v1.1 , v2.1

Works with the following CPUs:

Intel 486SX/DX/SX2/DX2
Intel 486ODPRDX2 / 486DOPRDX4 (Overdrive) / P24T
AMD Am486 / Am486DX2 / Am486DX4
UMC U5S
Cyrix Cx486S/Cx486DX/Cx486DX2
Cyrix 5x86

CPU speeds from 25 MHz up to 100 MHz are supported, with bus multipliers of 2x or 3x only supported. CPU voltage settings are 3.3V, 3.45V, 3.6V, 4V and 5V.

The board comes with 128 KB, 256 KB or 512 KB of onboard L2 cache.

SI54P-AIO

Year: 1995
Type: Socket 7
Form Factor: Baby AT
Power Connector: AT
Chipset: SiS 501/502/503
Slots: 4 x ISA (16-bit), 4 x PCI
Memory: 4 x 72-pin SIMMs (2 banks), 128 MB max.
BIOS: Award 4.50G
Known Revisions: 2.0

Supports Intel Pentium P54C from 75 MHz - 150 MHz.
256 KB Level 2 cache onboard.

User Manual
Jumper Settings

TSI54P-AIO

Year: 1995
Type: Socket 7
Form Factor: Baby AT
Power Connector: AT
Chipset:?
Slots: ?
Memory: ?
BIOS: Phoenix
BIOS Dates: 02/06/96

Supports Cyrix 6x86 CPUs, from P120+ to P166+, but these all require the Cyrix voltage regulator and heatsink.

TR5510-AIO

Year: 1995
Type: Socket 7
Form Factor: Baby AT
Power Connector: AT
Chipset: Intel 430FX
Slots: 3 x 16-bit ISA, 4 x PCI, COAST slot
Memory: 4 x 72-pin SIMM
BIOS: Phoenix or Award v4.50PG
BIOS Dates: 01/26/96, 02/02/96
BIOS String: 02/02/96-i430FX-2A59CE1NC-00
Known Board Revisions: 1.1A

Supports Cyrix 6x86 CPUs, from P120+ to P150+, AMD K5.

SI5PI-AIO

Year: 1994
Type: Socket 4
Form Factor: Baby AT
Chipset: SiS 501/502/503
Slots: 4 x ISA (16-bit), 4 x PCI
Memory: 4 x 72-pin SIMM. Supports EDO. Maximum 128 MB (all cacheable if using 512 KB L2 cache)
Known Board Revisions: 1.1

FSB speeds can be set from 20, 33, 40, 50, 60 and 66 MHz. Supports up to 1 MB of L2 cache onboard via its cache sockets.

This board has excellent overclocking / tweaking settings in the Award BIOS. Sadly it does come with the buggy CMD 540B PCI-EIDE controller but you can disable the CMD 32-bit transfer mode in the BIOS if you want or use a separate IDE controller card.

Tested maximum bus transfer rates with this board:

Hercules Dynamite 128 53 MB/sec
Matrox Millennium (MGA2064) 52 MB/sec
Elsa Winner 1000 (S3 Trio64V+) 52 MB/sec
S3 ViRGE 325 (4 MB) 22.5 MB/sec
Tseng Labs ET6000 48 MB/sec

UC4913

Year: 1992
Type: Socket 3
Form Factor: Baby AT
Power Connector: AT
Chipset: UMC UM82C491F
Slots: 2 x ISA (8-bit), 6 x ISA (16-bit), 3 x VLB
Memory: 8 x 30-pin SIMMs (2 banks)
BIOS: AMI
Known Revisions: 1.0

This board supports 486SX, 486DX, 486DX2, 4867SX (P23N), 486 Overdrive (P23T), Pentium Overdrive (P24T), and Cyrix Cx486 (M6) and IDT Winchip C6.

More Images


Graphics Cards

VideoImage VI-640

Year: 1995
Type: PCI
Chipset: ATI Mach64
Memory: 2 MB?
FCC ID: H9NVI640

The VI-640 had a maximum resolution of 1280 x 1024 non-interlaced.

VideoImage VI-710 / VI-710A / VI-711

Year: 1993?
Type: VESA Local Bus
Chipset: Tseng Labs ET4000AX
Memory: 512 KB (VI-710) or 1 MB (VI-711), expandable up to 2 MB

VideoImage VI-711A

Year: 1993?
Type: VESA Local Bus
Chipset: Cirrus Logic CL-GD5428
Memory: 1 MB (expandable up to 2 MB)
FCC ID: H9NVI710
Known Board Revisions: 2.0

More Images

VideoImage VI-720

Year: 1994?
Type: VESA Local Bus or PCI
Chipset: Cirrus Logic CL-GD5430 (PCI) or CL-GD5434 (VLB)
Memory: 1 MB or 2 MB (expandable up to 4 MB)
FCC ID: -
Video BIOS: Phoenix Technologies
Known Board Revisions: 2.0

The VideoImage VI-720 came in either PCI or VESA Local Bus form, with the PCI version using the Cirrus Logic CL-32-bit CL-GD5430 and the VLB version using the CL-GD5434 graphics accelerator chips. Both these accelerators had a 32-bit memory bus.

The onboard video memory ran at 60 MHz with 70ns DRAM SOJ chips, with half the memory soldered-in and two sockets for expansion to 2 MB (1 MB factory card) or 4 MB (2 MB from factory).

More Images

VideoImage VI-811

Year: 1995?
Type: VESA Local Bus
Chipset: Tseng Labs ET4000AX
Memory: 1 MB
FCC ID: -
Known Board Revisions: -

VideoImage VI-911

Year: 1995?
Type: VESA Local Bus
Chipset: S3 86C911
Memory: 1 MB VRAM
FCC ID: -
Known Board Revisions: -

VideoImage VI-930

Year: 1992?
Type: PCI
Chipset: S3 86C864
Memory: 512 KB or 1 MB
FCC ID: -
Known Board Revisions: -

VideoImage VI-931

Year: 1992?
Type: PCI
Chipset: S3 86C868
Memory: 512 KB or 1 MB
FCC ID: -
Known Board Revisions: -

VI-931 is a high resolution, high performance PCI video card using the S3 86C868 64-bit GUI accelerator with a video engine. It is designed with 64-bit architecture which provides good performance for high resolution, true color applications. It supports Intel, PowerPC, Alpha and MIPS hardware platform and a range of operating environments such as Windows, Windows NT, and OS/2.

Bus Interface:

  • Compatible with PCI 2.0 standard

Display Interface Features:

  • Resolution supports up to 1600x1200 256 colors
  • Supports 64-bit memory interface
  • Supports for Display Power Management Signaling (DPMS) in ROM
  • Video Playback
  • DDC1/2B support

Display Memory:

  • Support 1MB DRAM ( Two 256Kx16 ) on board 2MB DRAM optional

Key Components:

  • Vision 868
  • 64-bit architecture, direct PCI support
  • Faster BitBLT, fills, line draw, motion video acceleration for performance enhance, Video engine
  • Green PC support
  • 208-pin PQFP

S3 SDAC:

  • Integrates a 16-bit RAM DAC with a clock synthesizer
  • 16-bit pixel port support
  • Supports Vision 864 and 805i

VGA Modes Supported:

VI-931
Resolution Display Memory
1600x1200x16/256 colors 2M
1280x1024x16/256 colors, NI 2M
1024x768x64K colors 2M
800x600x64K colors 2M
1024x768x16/256 colors 1M
800x600x16/256 colors 1M
640x480x16/256/64K/16.8 million colors 1M

VideoImage VI-940A / VI-940B

Year: 1995?
Type: PCI
Chipset: S3 Trio32 (VI-940A) or S3 Trio64 (VI-940B)
Memory: 4 MB?
FCC ID: -
Known Board Revisions: -

VideoImage VI-941 / VI-941A / VI-941B

Year: 1995
Type: PCI
Chipset: S3 Trio32 (VI-941A) or S3 Trio64 (VI-941B)
Memory: 1 MB or 2 MB DRAM
FCC ID: -
Known Board Revisions: -

VI-941 is a cost effective PCI graphic card using S3 Trio series GUI accelerator. The VI-941A is installed with Trio32 (32-bit GUI accelerator) controller, and the VI-941B is Trio64 (64-bit GUI accelerator). The VI-941A supports up to 1MB DRAM for the 32-bit memory interface architecture. The VI-941B supports 1MB DRAM on board, maximum to 2MB.

Bus Interface

  • Compatible with PCI 2.0 standard

Display Interface:

  • Features
  • Resolution supports up to 1600x1200 256 colors
  • Supports 32/64-bit memory interface
  • Supports for Display Power Management Signaling (DPMS) in ROM
  • Display DRAM

VI-941A: Supports 1MB DRAM on board only - you can upgrade to 2 MB, but no more hi-resolution mode and performance enhancement.

VI-941B: Supports 1MB DRAM (8 pcs of 256Kx4) on board, 2MB optional (2 pcs of 256K x16).

Key Components:

  • Trio64/Trio32 : S3 PCI bus GUI accelerator
  • Pin-compatible S3 Trio64 (64-bit Graphics Engine) and Trio32 (32-bit Graphics Engine)
  • Integrated 24-bit RAMDAC and Programmable Dual-clock Synthesizer
  • Extensive Static/Dynamic Power Savings
  • DDC Monitor Communications Support
  • 208-pin PQFP

VGA Modes Supported:

VI-941
Resolution Display Memory
1600x1200x16/256 colors 2M
1280x1024x16/256 colors, NI 2M
1024x768x64K colors 2M
800x600x64K/16.8 million colors 2M
1024x768x16/256 colors 1M
800x600x16/256 colors 1M
640x480x16/256/64K/16.8 million colors 1M

VideoImage VI-942

Year: January 1996
Type: PCI
Chipset: S3 Trio64V+
Memory: 1 MB, 2 MB or 4 MB
FCC ID: -
Known Board Revisions: -

The VI-942 64-bit DRAM-based multimedia graphic card provides accelerated graphics and video, high resolutions, true color and multimedia capabilities. It is installed with S3 Trio64V+ graphic and video accelerator and designed with DRAM up to 2 MB.

The VI-942 supports a video engine for video playback decompression algorithms. Its integrated color space conversion, scaling and dithering further enhance the user interface and increase video performance.
For low power consumption (Green PC), the VI-942 allows software manipulation of its horizontal and vertical sync signals to control the power state of monitors. The VI-942 also supports the VESA Display Data Channel (DDC1 and DDC2) standard that permits transfer of monitor identification and resolution support data.

Bus Interface

  • Compatible with PCI 2.0 standard
  • VI-942 Rev1.0: Only supports software MPEG
  • VI-942 Rev2.0: Supports Local Peripher Bus (LPB) for Hardware MPEG Daughter board (LPB-100) or connect to other LPB device

Display Interface

  • Features
    • 64-bit graphic engine and video interface
    • Supports 64-bit memory interface
    • Supports for Display Power Management Signaling (DPMS) in ROM
    • Video Playback
    • Software MPEG
  • Display DRAM
    • Supports 1MB DRAM (8 pcs of 256Kx4) on board, 2MB optional (2 pcs of 256Kx16)

Key Components :

  • Trio64V+ :
    • Integrated 135MHz, 24-bit RAMDAC and Programmable Dual-clock Synthesizer
    • High quality hardware assisted video playback
    • Full hardware and BIOS support for VESA Display Power Management Signaling (DPMS) monitor power savings modes
    • Industry Standard 208-pin PQFP package
    • Support for Indeo Cinepak, and software accelerated MPEG-1 video playback

VGA Modes Supported:

Resolution Display Memory
1600x1200x16/256 colors 2MB
1280x1024x256 colors 2MB
1024x768x64K colors 2MB
800x600x64K/16.8 million colors 2MB
1600x1200x16 color 1MB
1280x1024x16 colors 1MB
1024x768x16/256 colors 1MB
800x600x16/256 colors 1MB
640x480x16/256/64K/16.8 million colors 1MB

 

3DVision-6326

Year: 1997
Type: AGP 2x
Chipset: SiS 6326
Memory: 4 MB EDO SDRAM
RAMDAC Speed: 175 MHz
FCC ID: -
Known Board Revisions: -

The 3DVision-6326 was based on the SiS 6326 graphics accelerator chipset, and came with a TV-Out port. I was able to provide a screen resolution up to 1280 x 1024 in 24-bit colour depths at an 85 Hz refresh rate.

AG305-32

Year: 199x
Type: AGP 2x
Chipset: SiS 305
Memory: 32 MB SDRAM

The AG305-32 was a 128-bit 2D graphics accelerator with a 128-bit 3D graphics engine combined with a 24-bit True Color RAMDAC. It ran with a 270 MHz core clock and offered display resolutions up to 1920x1440 in 256 colours at 60 Hz non-interlaced.

AG315-E32

Year: 199x
Type: AGP 4x
Chipset: SiS 315E
Memory: 32 MB SDRAM

The AG315-E32 was a 256-bit 3D graphics accelerator combined with a 24-bit True Color RAMDAC. It ran with a 375 MHz core clock and offered display resolutions up to 2048x1536 in 256 colours. The SiS chip also had a DVD Dynamic Compensation Decoder video accelerator for multimedia application. It was compatible with DirectX 8.