AST RESEARCH TECHNICAL BULLETIN TB-0117 11-01-85 AST-PCOX AND IBM'S ENHANCED COLOR GRAPHICS ADAPTER When installing AST-PCOX with IBM's Enhanced Color Graphics Adapter into the same PC, you must follow the instructions outlined in the steps below. Failure to do so will result in a flickering screen or rolling half screen. I. Rename PXU.COM to PXBAK.old A: i.e. A> ren pxu.com pxbak.old II. Rename PXT.COM to PXU.COM A: i.e. A> ren pxt.com pxu.com III. Run Install as outlined in pages 2-8 to 2-18 in the AST- PCOX User's Manual.