Intravision/reactos
1
0
Fork 0
mirror of https://github.com/reactos/reactos.git synced 2024-08-04 10:30:59 +00:00
Code Issues Packages Projects Releases Wiki Activity

[NTVDM]: Add offset information to the BIOS Data Area, and add missing fields. See the provided links in the patch for more information.

Browse source 
svn path=/branches/ntvdm/; revision=60890
This commit is contained in:
Hermès Bélusca-Maïto 2013-11-09 00:28:26 +00:00
parent 860c121da8
commit e971f67673
1 changed files with 78 additions and 50 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

128
subsystems/ntvdm/bios.h
View file

@ -24,12 +24,12 @@
#define BIOS_SEGMENT 0xF000
#define BIOS_VIDEO_INTERRUPT 0x10
#define BIOS_EQUIPMENT_INTERRUPT 0x11
#define BIOS_MEMORY_SIZE 0x12
#define BIOS_KBD_INTERRUPT 0x16
#define BIOS_TIME_INTERRUPT 0x1A
#define BIOS_SYS_TIMER_INTERRUPT 0x1C
#define BIOS_VIDEO_INTERRUPT 0x10
#define BIOS_EQUIPMENT_INTERRUPT 0x11
#define BIOS_MEMORY_SIZE 0x12
#define BIOS_KBD_INTERRUPT 0x16
#define BIOS_TIME_INTERRUPT 0x1A
#define BIOS_SYS_TIMER_INTERRUPT 0x1C
#define CONSOLE_FONT_HEIGHT 8
#define BIOS_KBD_BUFFER_SIZE 16
@ -69,54 +69,82 @@ enum
#pragma pack(push, 1)
/*
* BIOS Data Area at 0040:XXXX
*
* See: http://webpages.charter.net/danrollins/techhelp/0093.HTM
* and: http://www.bioscentral.com/misc/bda.htm
* for more information.
*/
typedef struct
{
WORD SerialPorts[4];
WORD ParallelPorts[3];
WORD EbdaSegment; // Sometimes, ParallelPort
WORD EquipmentList;
BYTE Reserved0; // Errors in PCjr infrared keyboard link
WORD MemorySize;
WORD Reserved1; // Scratch pad for manufacturing error tests
WORD KeybdShiftFlags;
BYTE AlternateKeypad;
WORD KeybdBufferHead;
WORD KeybdBufferTail;
WORD KeybdBuffer[BIOS_KBD_BUFFER_SIZE];
BYTE DriveRecalibrate;
BYTE DriveMotorStatus;
BYTE MotorShutdownCounter;
BYTE LastDisketteOperation;
BYTE Reserved2[7];
BYTE VideoMode;
WORD ScreenColumns;
WORD VideoPageSize;
WORD VideoPageOffset;
WORD CursorPosition[BIOS_MAX_PAGES];
BYTE CursorEndLine;
BYTE CursorStartLine;
BYTE VideoPage;
WORD CrtBasePort;
BYTE CrtModeControl;
BYTE CrtColorPaletteMask;
DWORD Uptime;
BYTE Reserved3;
DWORD TickCounter;
BYTE MidnightPassed;
BYTE BreakFlag;
WORD SoftReset;
BYTE LastDiskOperation;
BYTE NumDisks;
BYTE DriveControlByte;
BYTE DiskPortOffset;
BYTE LptTimeOut[4];
BYTE ComTimeOut[4];
WORD KeybdBufferStart;
WORD KeybdBufferEnd;
BYTE ScreenRows;
WORD CharacterHeight;
WORD SerialPorts[4]; // 0x00
WORD ParallelPorts[3]; // 0x08
WORD EbdaSegment; // 0x0e - ParallelPort in PC/XT
WORD EquipmentList; // 0x10
BYTE Reserved0; // 0x12 - Errors in PCjr infrared keyboard link
WORD MemorySize; // 0x13
WORD Reserved1; // 0x15 - Scratch pad for manufacturing error tests
WORD KeybdShiftFlags; // 0x17
BYTE AlternateKeypad; // 0x19
WORD KeybdBufferHead; // 0x1a
WORD KeybdBufferTail; // 0x1c
WORD KeybdBuffer[BIOS_KBD_BUFFER_SIZE]; // 0x1e
BYTE DriveRecalibrate; // 0x3e
BYTE DriveMotorStatus; // 0x3f
BYTE MotorShutdownCounter; // 0x40
BYTE LastDisketteOperation; // 0x41
BYTE Reserved2[7]; // 0x42
BYTE VideoMode; // 0x49
WORD ScreenColumns; // 0x4a
WORD VideoPageSize; // 0x4c
WORD VideoPageOffset; // 0x4e
WORD CursorPosition[BIOS_MAX_PAGES]; // 0x50
BYTE CursorEndLine; // 0x60
BYTE CursorStartLine; // 0x61
BYTE VideoPage; // 0x62
WORD CrtBasePort; // 0x63
BYTE CrtModeControl; // 0x65
BYTE CrtColorPaletteMask; // 0x66
BYTE CassetteData[5]; // 0x67
DWORD TickCounter; // 0x6c
BYTE MidnightPassed; // 0x70
BYTE BreakFlag; // 0x71
WORD SoftReset; // 0x72
BYTE LastDiskOperation; // 0x74
BYTE NumDisks; // 0x75
BYTE DriveControlByte; // 0x76
BYTE DiskPortOffset; // 0x77
BYTE LptTimeOut[4]; // 0x78
BYTE ComTimeOut[4]; // 0x7c
WORD KeybdBufferStart; // 0x80
WORD KeybdBufferEnd; // 0x82
BYTE ScreenRows; // 0x84
WORD CharacterHeight; // 0x85
BYTE EGAFlags[2]; // 0x87
BYTE VGAFlags[2]; // 0x89
DWORD Reserved3; // 0x8b
BYTE Reserved4; // 0x8f
BYTE Reserved5[2]; // 0x90
BYTE Reserved6[2]; // 0x92
BYTE Reserved7[2]; // 0x94
WORD Reserved8; // 0x96
DWORD Reserved9; // 0x98
DWORD Reserved10; // 0x9c
DWORD Reserved11[2]; // 0xa0
DWORD EGAPtr; // 0xa8
BYTE Reserved12[68]; // 0xac
BYTE Reserved13[16]; // 0xf0
DWORD Reserved14; // 0x100
BYTE Reserved15[12]; // 0x104
BYTE Reserved16[17]; // 0x110
BYTE Reserved17[15]; // 0x121
BYTE Reserved18[3]; // 0x130
} BIOS_DATA_AREA, *PBIOS_DATA_AREA;
C_ASSERT(sizeof(BIOS_DATA_AREA) == 0x133);
#pragma pack(pop)
/* FUNCTIONS ******************************************************************/