* COPYRIGHT: GPL - See COPYING in the top level directory
* PROJECT: ReactOS Virtual DOS Machine
* FILE: bios.h
- * PURPOSE: VDM BIOS (header file)
+ * PURPOSE: VDM BIOS
* PROGRAMMERS: Aleksandar Andrejevic <theflash AT sdf DOT lonestar DOT org>
*/
/* DEFINES ********************************************************************/
-#define CONSOLE_VIDEO_MEM_START 0xB8000
-#define CONSOLE_VIDEO_MEM_END 0xBFFFF
-#define ROM_AREA_START 0xC0000
-#define ROM_AREA_END 0xFFFFF
+#define ROM_AREA_START 0xE0000
+#define ROM_AREA_END 0xFFFFF
+
+#define BDA_SEGMENT 0x40
+#define BIOS_SEGMENT 0xF000
+
#define BIOS_PIC_MASTER_INT 0x08
-#define BIOS_PIC_SLAVE_INT 0x70
-#define BIOS_SEGMENT 0xF000
-#define VIDEO_BIOS_INTERRUPT 0x10
+#define BIOS_PIC_SLAVE_INT 0x70
+
+#define BIOS_VIDEO_INTERRUPT 0x10
+#define BIOS_EQUIPMENT_INTERRUPT 0x11
+#define BIOS_MEMORY_SIZE 0x12
+#define BIOS_MISC_INTERRUPT 0x15
+#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
+#define BIOS_EQUIPMENT_LIST 0x2C // HACK: Disable FPU for now
+
+#define BIOS_DEFAULT_VIDEO_MODE 0x03
+#define BIOS_MAX_PAGES 8
+#define BIOS_MAX_VIDEO_MODE 0x13
+#define DEFAULT_ATTRIBUTE 0x07
+
+#define GRAPHICS_VIDEO_SEG 0xA000
+#define TEXT_VIDEO_SEG 0xB800
+
+#define BDA_KBDFLAG_RSHIFT (1 << 0)
+#define BDA_KBDFLAG_LSHIFT (1 << 1)
+#define BDA_KBDFLAG_CTRL (1 << 2)
+#define BDA_KBDFLAG_ALT (1 << 3)
+#define BDA_KBDFLAG_SCROLL_ON (1 << 4)
+#define BDA_KBDFLAG_NUMLOCK_ON (1 << 5)
+#define BDA_KBDFLAG_CAPSLOCK_ON (1 << 6)
+#define BDA_KBDFLAG_INSERT_ON (1 << 7)
+#define BDA_KBDFLAG_RALT (1 << 8)
+#define BDA_KBDFLAG_LALT (1 << 9)
+#define BDA_KBDFLAG_SYSRQ (1 << 10)
+#define BDA_KBDFLAG_PAUSE (1 << 11)
+#define BDA_KBDFLAG_SCROLL (1 << 12)
+#define BDA_KBDFLAG_NUMLOCK (1 << 13)
+#define BDA_KBDFLAG_CAPSLOCK (1 << 14)
+#define BDA_KBDFLAG_INSERT (1 << 15)
+
+enum
+{
+ SCROLL_DIRECTION_UP,
+ SCROLL_DIRECTION_DOWN,
+ SCROLL_DIRECTION_LEFT,
+ SCROLL_DIRECTION_RIGHT
+};
+
+/*
+ * 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.
+ */
+#pragma pack(push, 1)
+typedef struct
+{
+ 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;
+#pragma pack(pop)
+
+C_ASSERT(sizeof(BIOS_DATA_AREA) == 0x133);
/* FUNCTIONS ******************************************************************/
-BOOLEAN BiosInitialize();
-VOID BiosUpdateConsole(ULONG StartAddress, ULONG EndAddress);
-VOID BiosUpdateVideoMemory(ULONG StartAddress, ULONG EndAddress);
-VOID BiosVideoService();
-VOID BiosHandleIrq(BYTE IrqNumber);
+extern PBIOS_DATA_AREA Bda;
+
+BOOLEAN BiosInitialize(VOID);
+VOID BiosCleanup(VOID);
+BYTE BiosGetVideoMode(VOID);
+BOOLEAN BiosSetVideoMode(BYTE ModeNumber);
+WORD BiosPeekCharacter(VOID);
+WORD BiosGetCharacter(VOID);
+VOID BiosGetCursorPosition(PBYTE Row, PBYTE Column, BYTE Page);
+VOID BiosSetCursorPosition(BYTE Row, BYTE Column, BYTE Page);
+VOID BiosPrintCharacter(CHAR Character, BYTE Attribute, BYTE Page);
+BOOLEAN BiosScrollWindow(
+ INT Direction,
+ DWORD Amount,
+ SMALL_RECT Rectangle,
+ BYTE Page,
+ BYTE FillAttribute
+);
+
+VOID WINAPI BiosVideoService(LPWORD Stack);
+VOID WINAPI BiosEquipmentService(LPWORD Stack);
+VOID WINAPI BiosGetMemorySize(LPWORD Stack);
+VOID WINAPI BiosMiscService(LPWORD Stack);
+VOID WINAPI BiosKeyboardService(LPWORD Stack);
+VOID WINAPI BiosTimeService(LPWORD Stack);
+VOID WINAPI BiosSystemTimerInterrupt(LPWORD Stack);
+
+VOID BiosHandleIrq(BYTE IrqNumber, LPWORD Stack);
+
+#endif // _BIOS_H_
-#endif
+/* EOF */
projects / reactos.git / blobdiff