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https://github.com/reactos/reactos.git
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36f251eca0
Fix several bugs: The file was not entirely read due to an integer overflow. The second WORD of the Program Segment Prefix (PSP) is not the number of allocated paragraphs, but the segment of the last paragraph. Fix the order of registers (SI and DI were mixed up with SP and BP). Implement interrupt 0x11. Implement redirection for reading/writing characters. svn path=/branches/ntvdm/; revision=59409
47 lines
1.4 KiB
C
47 lines
1.4 KiB
C
/*
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* COPYRIGHT: GPL - See COPYING in the top level directory
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* PROJECT: ReactOS Virtual DOS Machine
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* FILE: bios.h
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* PURPOSE: VDM BIOS (header file)
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* PROGRAMMERS: Aleksandar Andrejevic <theflash AT sdf DOT lonestar DOT org>
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*/
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#ifndef _BIOS_H_
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#define _BIOS_H_
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/* INCLUDES *******************************************************************/
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#include "ntvdm.h"
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/* DEFINES ********************************************************************/
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#define CONSOLE_VIDEO_MEM_START 0xB8000
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#define CONSOLE_VIDEO_MEM_END 0xBFFFF
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#define ROM_AREA_START 0xC0000
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#define ROM_AREA_END 0xFFFFF
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#define BIOS_PIC_MASTER_INT 0x08
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#define BIOS_PIC_SLAVE_INT 0x70
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#define BIOS_SEGMENT 0xF000
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#define BIOS_VIDEO_INTERRUPT 0x10
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#define BIOS_EQUIPMENT_INTERRUPT 0x11
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#define BIOS_KBD_INTERRUPT 0x16
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#define BIOS_TIME_INTERRUPT 0x1A
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#define CONSOLE_FONT_HEIGHT 8
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#define BIOS_KBD_BUFFER_SIZE 256
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#define BIOS_EQUIPMENT_LIST 0x3C // HACK: Disable FPU for now
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/* FUNCTIONS ******************************************************************/
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BOOLEAN BiosInitialize();
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VOID BiosUpdateConsole(ULONG StartAddress, ULONG EndAddress);
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VOID BiosUpdateVideoMemory(ULONG StartAddress, ULONG EndAddress);
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WORD BiosPeekCharacter();
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WORD BiosGetCharacter();
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VOID BiosVideoService();
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VOID BiosEquipmentService();
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VOID BiosKeyboardService();
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VOID BiosTimeService();
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VOID BiosHandleIrq(BYTE IrqNumber);
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#endif
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