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hgcdefs.inc
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上传日期：2013-04-11
资源大小：19621k
文件大小：3k
源码类别：
操作系统开发
开发平台：
Visual C++
- ;***
- ;HGCDEFS - Global definitions for MSHERC.
- ;***
- .XLIST
- ;***
- ;
- ; Copyright <C> 1987, 1988, Microsoft Corporation
- ;
- ;Purpose:
- ; Global definitions for MSHERC.
- ;
- ;******************************************************************************
- ;--------------------------------------------------------------------;
- ; Equates
- ;--------------------------------------------------------------------;
- LowerFuncMax equ 0FH ;Max func # for implemented IBM lookalikes
- InquireFuncNo equ 0EFH ;Inquire Driver Function Number
- HGCGrMode equ 8 ;BIOS mode number for HGC graphics
- INT10HVECTOR_OFFSET EQU 10h*4 ;INT 10H Code Offset
- INT10HVECTOR_SEGMENT EQU 10h*4+2 ;INT 10H Code Segment
- ;------Registers------
- IndexReg equ 03B4H ;6845 CRT Controller Index Register
- DataReg equ 03B5H ;6845 CRT Controller Data Register
- DMC_Port equ 03B8H ;Display Mode Control Port
- DS_Port equ 03BAH ;Display Status Port
- Config_Port equ 03BFH ;Configuration Port
- Register0 equ 0 ;6845 Register 0
- Scr0_Buf_Seg equ 0B000H ;Display Buffer Segment
- Scr1_Buf_Seg equ 0B800H ;Graphics Page 1 Segment
- ;-----Configuration Port Values--------
- DIAG equ 0 ;Graphics Mode and Page1 Disabled
- HALF equ 1 ;Graphics Mode enabled,Page1 disabled
- FULL equ 3 ;Graphics Mode and Page1 enabled
- ;------ Hercules ID Code Values ------
- IDMask equ 01110000b ;Mask for HGC ID Code bits
- HGC112ID equ 00010000b ;HGC GB112 ID Code
- HGC222ID equ 01010000b ;HGC GB222 ID Code
- ;------Display Mode Control Port Values--------
- GraphicsOn equ 00000010b ;Selects Graphics Mode
- TextOn equ 00000000b ;Selects Text Mode
- ScreenOn equ 00001000b ;Activates video
- ScreenOff equ 00000000b ;Disables video
- BlinkOn equ 00100000b ;Enable the Text Blink Attribute
- BlinkOff equ 00000000b ;Disable the Text Blink Attribute
- GraphicsPage0 equ 00000000b ;Graphics Display Segment = 0B000H
- GraphicsPage1 equ 10000000b ;Graphics Display Segment = 0B800H
- GraphBufferSize equ 8000h ;Graphics Buffer size = 32k bytes
- Delay equ 20 ;Number of vsyncs to pause for a
- ;mode change
- CRTValsCnt equ 14 ;# bytes of 6845 Register Data
- BIOSMODE EQU 449H ;BIOS screen mode number
- BIOSCURS EQU 450H ;BIOS Offset of current cursor position
- BIOSCOLS EQU 44AH ;BIOS Offset of current screen columns
- BIOSPAGE EQU 462H ;BIOS Offset of current page number
- BIOSSTART EQU 44EH ;BIOS Offset of current page buffer start
- BIOSLEN EQU 44CH ;BIOS page length
- BIOSEQUIP EQU 410H ;BIOS equipment information
- BIOSCURSMODE EQU 460H ;BIOS cursor type
- ;-------Parameter Offsets In Stack-------
- FunData equ [bp]
- RegStrc struc ;Structure for saved registers
- FunAX dw ?
- FunBX dw ?
- FunCX dw ?
- FunDX dw ?
- RegStrc ends
- ;----- Graphics Mode Constants -------
- GrNextScan equ 2000H ;Point to next scan in graphics mode
- NextScanAdjust equ 8000H-90 ;Adjusts next scan ptr when off-screen
- ;------ Write TTY equates ------
- Bell equ 7
- BackSpace equ 8
- CarriageReturn equ 0DH
- LineFeed equ 0AH
