[<<Previous Entry] [^^Up^^] [Next Entry>>] [Menu] [About The Guide]
INT 2F U - Quarterdeck - VIDRAM v5.0+ - INSTALLATION CHECK
        AX = D201h
        BX = 5649h ("VI")
        CX = 4452h ("DR")
        DX = 414dh ("AM")
Return: BX = 4F4Bh ("OK")
        ES:DI -> VIDRAM entry point
Note:   QEMM/QRAM/VIDRAM/MANIFEST will search for a free AH value from D2h
          through FFh, then C0h through D1h

Call VIDRAM entry point with:
        AH = 00h get status
                Return: AL = VIDRAM state (see below)
                        BL = bit 0: ???
                             bits 1-7 not used
                        BH = flags???
                            bit 4: high RAM exists in video area???
                        CL = current monitor (01h = mono, 80h = color)
                        SI = current top of memory (paragraph)???
                        DI = segment of ???
        AH = 01h setup
                AL = VIDRAM state (00h off, 01h no EGA graphics, 02h no graph)
                BL = bit 0: ???
                     bits 1-7 not used
                BH = flags???
                CL = monitor (01h = monochrome, 80h = color)
                SI = new top of memory (paragraph)???
        AH = 02h get ???
                Return: ES:DI -> ??? data
Return: CF set on error
        CF clear if successful

This page created by ng2html v1.05, the Norton guide to HTML conversion utility. Written by Dave Pearson