dskbios32.h File Reference

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Macros
#define	BIOS_DISK_INTERRUPT   0x13

Functions
VOID	DiskBios32Post (VOID)
BOOLEAN	DiskBios32Initialize (VOID)
VOID	DiskBios32Cleanup (VOID)

Macro Definition Documentation

BIOS_DISK_INTERRUPT

#define BIOS_DISK_INTERRUPT   0x13

Definition at line 14 of file dskbios32.h.

Function Documentation

DiskBios32Cleanup()

VOID DiskBios32Cleanup

(

VOID

)

Definition at line 701 of file dskbios32.c.

{
}

Referenced by Bios32Cleanup().

DiskBios32Initialize()

BOOLEAN DiskBios32Initialize

(

VOID

)

Definition at line 674 of file dskbios32.c.

{
    /*
     * Initialize BIOS Disk ROM static data
     */
 
    /* Floppy Parameter Table */
    RtlCopyMemory(SEG_OFF_TO_PTR(BIOS_SEGMENT, 0xEFC7),
                  &FloppyParamTable.FloppyParamTable,
                  sizeof(FloppyParamTable.FloppyParamTable));
 
    //
    // FIXME: Must be done by HW floppy controller!
    //
 
    /* Detect and initialize the supported disks */
    // TODO: the "Detect" part is missing.
    FloppyDrive[0] = RetrieveDisk(FLOPPY_DISK, 0);
    FloppyDrive[1] = RetrieveDisk(FLOPPY_DISK, 1);
    HardDrive[0]   = RetrieveDisk(HARD_DISK, 0);
    HardDrive[1]   = RetrieveDisk(HARD_DISK, 1);
    HardDrive[2]   = RetrieveDisk(HARD_DISK, 2);
    HardDrive[3]   = RetrieveDisk(HARD_DISK, 3);
 
    return TRUE;
}

Referenced by Bios32Initialize().

DiskBios32Post()

VOID DiskBios32Post

(

VOID

)

Definition at line 647 of file dskbios32.c.

{
    /*
     * Initialize BIOS Disk RAM dynamic data
     */
 
    /* Some vectors are in fact addresses to tables */
    // Diskette Parameters
    ((PULONG)BaseAddress)[0x1E] = MAKELONG(0xEFC7, BIOS_SEGMENT);
    // Hard Disk 0 Parameter Table Address
    ((PULONG)BaseAddress)[0x41] = NULL32;
    // Hard Disk 1 Drive Parameter Table Address
    ((PULONG)BaseAddress)[0x46] = NULL32;
 
    /* Relocated services by the BIOS (when needed) */
    ((PULONG)BaseAddress)[0x40] = NULL32; // ROM BIOS Diskette Handler relocated by Hard Disk BIOS
    // RegisterBiosInt32(0x40, NULL); // ROM BIOS Diskette Handler relocated by Hard Disk BIOS
 
    /* Register the BIOS 32-bit Interrupts */
    RegisterBiosInt32(BIOS_DISK_INTERRUPT, BiosDiskService);
 
    /* Initialize the BDA */
    // Bda->LastDisketteOperation = 0;
    // Bda->LastDiskOperation = 0;
    AllDisksReset();
}

Referenced by Bios32Post().