#include "kbdbios.h"
#include "vidbios.h"

Include dependency graph for bios.h:

This graph shows which files directly or indirectly include this file:

Classes
struct	BIOS_DATA_AREA

struct	USER_DATA_AREA

struct	_BIOS_CONFIG_TABLE

Macros
#define	BOP_RESET 0x00

#define	BOP_EQUIPLIST 0x11

#define	BOP_GETMEMSIZE 0x12

#define	BDA_SEGMENT 0x40

#define	BIOS_SEGMENT 0xF000

Typedefs
typedef struct BIOS_DATA_AREA *	PBIOS_DATA_AREA

typedef struct USER_DATA_AREA *	PUSER_DATA_AREA

typedef struct _BIOS_CONFIG_TABLE	BIOS_CONFIG_TABLE

typedef struct _BIOS_CONFIG_TABLE *	PBIOS_CONFIG_TABLE

Functions
	C_ASSERT (sizeof(BIOS_DATA_AREA)==0x100)

	C_ASSERT (sizeof(USER_DATA_AREA)==0x34)

VOID WINAPI	BiosEquipmentService (LPWORD Stack)

VOID WINAPI	BiosGetMemorySize (LPWORD Stack)

BOOLEAN	BiosInitialize (IN LPCSTR BiosFileName, IN LPCSTR RomFiles OPTIONAL)

VOID	BiosCleanup (VOID)

Variables
PBIOS_DATA_AREA	Bda

PBIOS_CONFIG_TABLE	Bct

Macro Definition Documentation

◆ BDA_SEGMENT

#define BDA_SEGMENT 0x40

Definition at line 28 of file bios.h.

◆ BIOS_SEGMENT

#define BIOS_SEGMENT 0xF000

Definition at line 29 of file bios.h.

◆ BOP_EQUIPLIST

#define BOP_EQUIPLIST 0x11

Definition at line 22 of file bios.h.

◆ BOP_GETMEMSIZE

#define BOP_GETMEMSIZE 0x12

Definition at line 23 of file bios.h.

◆ BOP_RESET

#define BOP_RESET 0x00

Definition at line 20 of file bios.h.

Typedef Documentation

◆ BIOS_CONFIG_TABLE

typedef struct _BIOS_CONFIG_TABLE BIOS_CONFIG_TABLE

◆ PBIOS_CONFIG_TABLE

typedef struct _BIOS_CONFIG_TABLE * PBIOS_CONFIG_TABLE

◆ PBIOS_DATA_AREA

typedef struct BIOS_DATA_AREA * PBIOS_DATA_AREA

◆ PUSER_DATA_AREA

typedef struct USER_DATA_AREA * PUSER_DATA_AREA

Function Documentation

◆ BiosCleanup()

VOID BiosCleanup ( VOID )

Definition at line 153 of file bios.c.

 {
     UmaMgrCleanup();
 
     if (Bios32Loaded) Bios32Cleanup();
 }

Referenced by VdmShutdown().

◆ BiosEquipmentService()

VOID WINAPI BiosEquipmentService ( LPWORD Stack )

Definition at line 200 of file bios32.c.

 {
     /* Return the equipment list */
     setAX(Bda->EquipmentList);
 }

Referenced by BiosInitialize(), and InitializeBiosInt32().

◆ BiosGetMemorySize()

VOID WINAPI BiosGetMemorySize ( LPWORD Stack )

Definition at line 206 of file bios32.c.

 {
     /* Return the conventional memory size in kB, typically 640 kB */
     setAX(Bda->MemorySize);
 }

Referenced by BiosInitialize(), and InitializeBiosInt32().

◆ BiosInitialize()

BOOLEAN BiosInitialize	(	IN LPCSTR	BiosFileName,
		IN LPCSTR RomFiles	OPTIONAL
	)

Definition at line 60 of file bios.c.

 {
     BOOLEAN Success = FALSE;
     BOOLEAN Success2 = FALSE;
     LPCSTR RomFile;
     LPSTR ptr;
     ULONG_PTR RomAddress;
     CHAR RomFileName[MAX_PATH + 10 + 1];
 
     /* Disable interrupts */
     setIF(0);
 
     /* Initialize the BDA and the BCT pointers */
     Bda =    (PBIOS_DATA_AREA)SEG_OFF_TO_PTR(BDA_SEGMENT , 0x0000);
     // The BCT is found at F000:E6F5 for 100% compatible BIOSes.
     Bct = (PBIOS_CONFIG_TABLE)SEG_OFF_TO_PTR(BIOS_SEGMENT, 0xE6F5);
 
     /* Register the BIOS support BOPs */
     RegisterBop(BOP_RESET, WinNtVdmBiosReset);          // Needed for Windows NTVDM (SoftPC) BIOS.
     RegisterBop(BOP_EQUIPLIST , BiosEquipmentService);  // Needed by Windows NTVDM (SoftPC) BIOS
     RegisterBop(BOP_GETMEMSIZE, BiosGetMemorySize);     // and also NTDOS!!
 
     if (BiosFileName == NULL)
     {
         Success = Bios32Loaded = Bios32Initialize();
     }
     else if (BiosFileName[0] != '\0')
     {
         PVOID BiosLocation = NULL;
 
         Success = LoadBios(BiosFileName, &BiosLocation, NULL);
         DPRINT1("BIOS file '%s' loading %s at address 0x%08x; GetLastError() = %u\n",
                 BiosFileName, Success ? "succeeded" : "failed", BiosLocation, GetLastError());
     }
     else // if (BiosFileName[0] == '\0')
     {
         /* Do nothing */
         Success = TRUE;
     }
 
     /* Bail out now if we failed to load any BIOS file */
     if (!Success) return FALSE;
 
     /* Load optional ROMs */
     if (RomFiles)
     {
         RomFile = RomFiles;
         while (*RomFile)
         {
             strncpy(RomFileName, RomFile, ARRAYSIZE(RomFileName));
             RomFileName[ARRAYSIZE(RomFileName)-1] = '\0';
 
             ptr = strchr(RomFileName, '|'); // Since '|' is forbidden as a valid file name, we use it as a separator for the ROM address.
             if (!ptr) goto Skip;
             *ptr++ = '\0';
 
             RomAddress = strtoul(ptr, NULL, 0); // ROM segment
             RomAddress <<= 4; // Convert to real address
             if (RomAddress == 0) goto Skip;
 
             Success2 = LoadRom(RomFileName, (PVOID)RomAddress, NULL);
             DPRINT1("ROM file '%s' loading %s at address 0x%08x; GetLastError() = %u\n",
                     RomFileName, Success2 ? "succeeded" : "failed", RomAddress, GetLastError());
 
 Skip:
             RomFile += strlen(RomFile) + 1;
         }
     }
 
     /*
      * Boot it up.
      * The CPU is already in reset-mode so that
      * CS:IP points to F000:FFF0 as required.
      */
     // DisplayMessage(L"CS:IP=%04X:%04X", getCS(), getIP());
     // setCS(0xF000);
     // setIP(0xFFF0);
 
     // /* Enable interrupts */
     // setIF(1);
 
     /* Initialize the Upper Memory Area Manager */
     if (!UmaMgrInitialize())
     {
         wprintf(L"FATAL: Failed to initialize the UMA manager.\n");
         return FALSE;
     }
 
     return Success;
 }

Referenced by wmain().

◆ C_ASSERT() [1/2]

C_ASSERT ( sizeof(BIOS_DATA_AREA) = =0x100 )

◆ C_ASSERT() [2/2]

C_ASSERT ( sizeof(USER_DATA_AREA) = =0x34 )

Variable Documentation

◆ Bct

PBIOS_CONFIG_TABLE Bct

Definition at line 43 of file bios.c.

Referenced by BiosInitialize().

◆ Bda

PBIOS_DATA_AREA Bda

Definition at line 42 of file bios.c.

Referenced by AllDisksReset(), Bios32Post(), BiosCharPrint(), BiosDiskService(), BiosEquipmentService(), BiosGetMemorySize(), BiosInitialize(), BiosKbdBufferPop(), BiosKbdBufferPush(), BiosKbdBufferTop(), BiosKeyboardIrq(), BiosKeyboardService(), BiosMiscService(), BiosSystemTimerInterrupt(), BiosTimeService(), Dem_BiosCharPrint(), DosFastConOut(), EraseMouseCursor(), InitializeBiosData(), KbdBios32Post(), PaintMouseCursor(), VbeService(), VbeSetExtendedRegisters(), VbeSetExtendedVideoMode(), VgaSetRegisters(), VidBiosDrawGlyph(), VidBiosGetCursorPosition(), VidBiosGetVideoMode(), VidBiosPost(), VidBiosPrintCharacter(), VidBiosScrollWindow(), VidBiosSetCursorPosition(), VidBiosSetCursorShape(), VidBiosSetVideoMode(), VidBiosSetVideoPage(), VidBiosSyncCursorPosition(), and VidBiosVideoService().

Classes

Macros

Typedefs

Functions

Variables