;---------------------------------------------------------------------- ; Module Name :VESA.inc ; Program Name : ; Description :contains constants and structutres for VESA BIOS ; Date :May 31, 1989 ; Version :1.0 ; Programmer :Rakesh K. Jain ; (C) Chips and Technologies, Inc. 1989 ;---------------------------------------------------------------------- SUCCESS equ 0 ; return value on success FAILURE equ 1 ; return value on failure VESA_FUNCTIONS equ 04FH ; VESA Control function MAX_FUNCTIONS equ 7 VERSION equ 0100H ; Version 1.0 END_OF_MODES equ -1 NREG_SR equ 4 NREG_CR equ 19h NREG_AR equ 15h NREG_GR equ 9 SIZE_VGA_STATE equ 1+1+1+NREG_SR+1+NREG_CR+1+NREG_AR+1+NREG_GR SIZE_SUPERVGA_STATE equ 20 SIZE_DAC_STATE equ 256*3+1 SIZE_BIOS_DATA_STATE equ 4 ; Monitor type MULTISYNC_II equ 0 MULTISYNC_PLUS equ 1 ; ; Video state equates ; VS_HW_STATE equ 0000000000000001b ; Save/Restore Video H/W state VS_BIOS_STATE equ 0000000000000010b ; Save/Restore Video BIOS state VS_DAC_STATE equ 0000000000000100b ; Save/Restore Video DAC VS_SUPERVGA_STATE equ 0000000000001000b ; Save/Restore Super VGA State VS_GET_BUFSIZE equ 0 ; Get buffer size function VS_SAVE_STATE equ 1 ; Save state VS_RESTORE_STATE equ 2 ; Restore state BLOCKSIZE equ 64 ; Block size is 64 bytes ; ; Extended register to be saved ; defextregs macro x irp y, db y endm endm VGAInfoBlock struc VESASignature db 'VESA' VESAVersion dw VERSION OEMString dd ? Capabilities db 4 DUP (0) VideoModePtr dd ? VGAInfoBlock ends ModeInfoBlock struc ModeAttributes dw ? WinAAttributes db ? WinBAttributes db ? WinGranularity dw ? WinSize dw ? WinASegment dw ? WinBSegment dw ? WinFuncPtr dd ? BytesPerScanline dw ? ; end of obligatory structure XResolution dw ? YResolution dw ? XCharCellSize db ? YCharCellSize db ? NumberOfPlanes db ? BitsPerPixel db ? NumberOfBanks db ? MemoryModel db ? BankSize db ? ModeInfoBlock ends OBLG_INFO_SIZE equ XResolution - ModeAttributes EXT_INFO_SIZE equ (SIZE ModeInfoBlock) - OBLG_INFO_SIZE ; ; Video mode Attributes ; MA_HW_SUPP equ 0000000000000001b ; Mode is supported in H/W MA_EXT_INFO equ 0000000000000010b ; Extended Info is available MA_BIOS_OUTP equ 0000000000000100b ; BIOS Supports output functions MA_COLOR equ 0000000000001000b ; It is a is color mode MA_GRAPHICS equ 0000000000010000b ; It is a graphics mode ;**OldMA_BIOS_INIT equ 0000000000000100b ; Mode can be initialized by BIOS GRAPHICS_MODE equ MA_HW_SUPP+MA_EXT_INFO+MA_BIOS_OUTP+MA_COLOR+MA_GRAPHICS TEXT_MODE equ MA_HW_SUPP+MA_EXT_INFO+MA_BIOS_OUTP+MA_COLOR ; ; Window Attributes ; WA_WINSUPP equ 00000001b ; Window supported WA_WINREAD equ 00000010b ; Window is readable WA_WINWRITE equ 00000100b ; Window is writable WIN_ATTR equ WA_WINSUPP+WA_WINREAD+WA_WINWRITE ; ; Memory models ; MM_TEXTMODE equ 00 ; Text modes MM_CGAGRAPH equ 01 ; CGA Graphics modes MM_HERCGRAPH equ 02 ; Hercules graphics mode MM_4PLANAR equ 03 ; 4 Plane planar modes MM_PACKEDPIX equ 04 ; Packed pixel modes MM_NONCHAIN equ 05 ; Extended packed pixel InitModeInfo macro parm_list irp x, ModeInfoBlock endm endm ; ;**************************** Non VESA Stuff ************************* ; ; ; Constant Definitions ; VideoInt equ 10h ;Video Interrupt NL equ <0dh, 0ah> ;New Line EOS equ '$' ;End of String TAB equ 9 ;TAB ; ;DOS Function Numbers with INT 21h ; STDOUT equ 9 ;for Printing a String GETINTVEC equ 35h ;for Getting INT Vector SETINTVEC equ 25h ;for Setting INT Vector TSR equ 31h ;for Terminate & Stay Resident ; ; Macro Defintions ; pushem macro x irp y, push y endm endm popem macro x irp y, pop y endm endm callfar macro db 9ah ;;Opcode for Far Call with Label endm print macro msg mov dx, OFFSET msg mov ah, STDOUT ;;INT21h Function to Display Text String int 21h endm getvector macro intnum mov ah, GETINTVEC ;;Get Interrupt Vector Function Number mov al, intnum ;;Interrupt Number int 21h endm setvector macro intnum, handler mov dx, OFFSET handler ;;Offset of Interrupt Handler mov ah, SETINTVEC ;;Set Interrupt Vector Function Number mov al, intnum ;;Interrupt Number int 21h endm