reactos/subsystems/ntvdm/bios/bios.h

   1 /*
   2  * COPYRIGHT:       GPL - See COPYING in the top level directory
   3  * PROJECT:         ReactOS Virtual DOS Machine
   4  * FILE:            bios.h
   5  * PURPOSE:         VDM BIOS Support Library
   6  * PROGRAMMERS:     Hermes Belusca-Maito (hermes.belusca@sfr.fr)
   7  */
   8
   9 #ifndef _BIOS_H_
  10 #define _BIOS_H_
  11
  12 /* INCLUDES *******************************************************************/
  13
  14 #include "ntvdm.h"
  15 #include "kbdbios.h"
  16 #include "vidbios.h"
  17
  18 /* DEFINES ********************************************************************/
  19
  20 /* BOP Identifiers */
  21 #define BOP_RESET       0x00    // Windows NTVDM (SoftPC) BIOS calls BOP 0x00
  22                                 // to let the virtual machine initialize itself
  23                                 // the IVT and its hardware.
  24 #define BOP_EQUIPLIST   0x11
  25 #define BOP_GETMEMSIZE  0x12
  26
  27
  28
  29
  30 #define BDA_SEGMENT     0x40
  31 #define BIOS_SEGMENT    0xF000
  32
  33 #define BIOS_EQUIPMENT_LIST 0x2E    // Bit1: FPU, Bit 2: Mouse
  34
  35 #pragma pack(push, 1)
  36
  37 /*
  38  * BIOS Data Area at 0040:XXXX
  39  *
  40  * See: http://webpages.charter.net/danrollins/techhelp/0093.HTM
  41  * and: http://www.bioscentral.com/misc/bda.htm
  42  * for more information.
  43  */
  44 typedef struct
  45 {
  46     WORD SerialPorts[4];                        // 0x00
  47     WORD ParallelPorts[3];                      // 0x08
  48     WORD EbdaSegment;                           // 0x0e - ParallelPort in PC/XT
  49     WORD EquipmentList;                         // 0x10
  50     BYTE Reserved0;                             // 0x12 - Errors in PCjr infrared keyboard link
  51     WORD MemorySize;                            // 0x13
  52     WORD Reserved1;                             // 0x15 - Scratch pad for manufacturing error tests
  53     WORD KeybdShiftFlags;                       // 0x17
  54     BYTE AlternateKeypad;                       // 0x19
  55     WORD KeybdBufferHead;                       // 0x1a
  56     WORD KeybdBufferTail;                       // 0x1c
  57     WORD KeybdBuffer[BIOS_KBD_BUFFER_SIZE];     // 0x1e
  58     BYTE DriveRecalibrate;                      // 0x3e
  59     BYTE DriveMotorStatus;                      // 0x3f
  60     BYTE MotorShutdownCounter;                  // 0x40
  61     BYTE LastDisketteOperation;                 // 0x41
  62     BYTE Reserved2[7];                          // 0x42
  63     BYTE VideoMode;                             // 0x49
  64     WORD ScreenColumns;                         // 0x4a
  65     WORD VideoPageSize;                         // 0x4c
  66     WORD VideoPageOffset;                       // 0x4e
  67     WORD CursorPosition[BIOS_MAX_PAGES];        // 0x50
  68     BYTE CursorEndLine;                         // 0x60
  69     BYTE CursorStartLine;                       // 0x61
  70     BYTE VideoPage;                             // 0x62
  71     WORD CrtBasePort;                           // 0x63
  72     BYTE CrtModeControl;                        // 0x65
  73     BYTE CrtColorPaletteMask;                   // 0x66
  74     BYTE CassetteData[5];                       // 0x67
  75     DWORD TickCounter;                          // 0x6c
  76     BYTE MidnightPassed;                        // 0x70
  77     BYTE BreakFlag;                             // 0x71
  78     WORD SoftReset;                             // 0x72
  79     BYTE LastDiskOperation;                     // 0x74
  80     BYTE NumDisks;                              // 0x75
  81     BYTE DriveControlByte;                      // 0x76
  82     BYTE DiskPortOffset;                        // 0x77
  83     BYTE LptTimeOut[4];                         // 0x78
  84     BYTE ComTimeOut[4];                         // 0x7c
  85     WORD KeybdBufferStart;                      // 0x80
  86     WORD KeybdBufferEnd;                        // 0x82
  87     BYTE ScreenRows;                            // 0x84
  88     WORD CharacterHeight;                       // 0x85
  89     BYTE VGAOptions;                            // 0x87
  90     BYTE VGASwitches;                           // 0x88
  91     BYTE VGAFlags[2];                           // 0x89
  92     DWORD Reserved3;                            // 0x8b
  93     BYTE Reserved4;                             // 0x8f
  94     BYTE Reserved5[2];                          // 0x90
  95     BYTE Reserved6[2];                          // 0x92
  96     BYTE Reserved7[2];                          // 0x94
  97     WORD KeybdStatusFlags;                      // 0x96
  98     DWORD Reserved9;                            // 0x98
  99     DWORD Reserved10;                           // 0x9c
 100     DWORD Reserved11[2];                        // 0xa0
 101     DWORD EGAPtr;                               // 0xa8
 102     BYTE Reserved12[68];                        // 0xac
 103     BYTE Reserved13[16];                        // 0xf0
 104
 105     DWORD Reserved14;                           // 0x100
 106     BYTE Reserved15[12];                        // 0x104
 107     BYTE Reserved16[17];                        // 0x110
 108     BYTE Reserved17[15];                        // 0x121
 109     BYTE Reserved18[3];                         // 0x130
 110 } BIOS_DATA_AREA, *PBIOS_DATA_AREA;
 111 C_ASSERT(sizeof(BIOS_DATA_AREA) == 0x133);
 112
 113 /*
 114  * BIOS Configuration Table at F000:E6F5 for 100% compatible BIOSes.
 115  *
 116  * See: http://www.ctyme.com/intr/rb-1594.htm
 117  * for more information.
 118  */
 119 typedef struct _BIOS_CONFIG_TABLE
 120 {
 121     WORD    Length;                             // 0x00
 122     BYTE    Model;                              // 0x02
 123     BYTE    SubModel;                           // 0x03
 124     BYTE    Revision;                           // 0x04
 125     BYTE    Feature[5];                         // 0x05 -- 0x09
 126     // Other BIOSes may extend this table. We don't.
 127 } BIOS_CONFIG_TABLE, *PBIOS_CONFIG_TABLE;
 128
 129 #pragma pack(pop)
 130
 131 /* FUNCTIONS ******************************************************************/
 132
 133 extern PBIOS_DATA_AREA Bda;
 134 extern PBIOS_CONFIG_TABLE Bct;
 135
 136 VOID WINAPI BiosEquipmentService(LPWORD Stack);
 137 VOID WINAPI BiosGetMemorySize(LPWORD Stack);
 138
 139 BOOLEAN
 140 BiosInitialize(IN LPCSTR BiosFileName);
 141
 142 VOID
 143 BiosCleanup(VOID);
 144
 145 #endif // _BIOS_H_
 146
 147 /* EOF */