--- /dev/null
+/*
+ * COPYRIGHT: GPL - See COPYING in the top level directory
+ * PROJECT: ReactOS Virtual DOS Machine
+ * FILE: subsystems/mvdm/ntvdm/bios/bios32/bios32.c
+ * PURPOSE: VDM 32-bit BIOS
+ * PROGRAMMERS: Aleksandar Andrejevic <theflash AT sdf DOT lonestar DOT org>
+ * Hermes Belusca-Maito (hermes.belusca@sfr.fr)
+ */
+
+/* INCLUDES *******************************************************************/
+
+#include "ntvdm.h"
+
+/* BIOS Version number and Copyright */
+#include <reactos/buildno.h>
+#include <reactos/version.h>
+
+#define NDEBUG
+#include <debug.h>
+
+#include "emulator.h"
+#include "cpu/cpu.h" // for EMULATOR_FLAG_CF
+#include "cpu/bop.h"
+#include "int32.h"
+#include <isvbop.h>
+
+#include <bios/bios.h>
+#include <bios/rom.h>
+#include "bios32.h"
+#include "bios32p.h"
+#include "dskbios32.h"
+#include "kbdbios32.h"
+#include "vidbios32.h"
+#include "moubios32.h"
+
+#include "memory.h"
+#include "io.h"
+#include "hardware/cmos.h"
+#include "hardware/pic.h"
+#include "hardware/pit.h"
+#include "hardware/ps2.h"
+
+/* PRIVATE VARIABLES **********************************************************/
+
+CALLBACK16 BiosContext;
+
+/*
+
+Bochs BIOS, see rombios.h
+=========================
+
+// model byte 0xFC = AT
+#define SYS_MODEL_ID 0xFC
+#define SYS_SUBMODEL_ID 0x00
+#define BIOS_REVISION 1
+#define BIOS_CONFIG_TABLE 0xe6f5
+
+#ifndef BIOS_BUILD_DATE
+# define BIOS_BUILD_DATE "06/23/99"
+#endif
+
+// 1K of base memory used for Extended Bios Data Area (EBDA)
+// EBDA is used for PS/2 mouse support, and IDE BIOS, etc.
+#define EBDA_SEG 0x9FC0
+#define EBDA_SIZE 1 // In KiB
+#define BASE_MEM_IN_K (640 - EBDA_SIZE)
+
+
+See rombios.c
+=============
+
+ROM BIOS compatibility entry points:
+===================================
+$e05b ; POST Entry Point
+$e2c3 ; NMI Handler Entry Point
+$e3fe ; INT 13h Fixed Disk Services Entry Point
+$e401 ; Fixed Disk Parameter Table
+$e6f2 ; INT 19h Boot Load Service Entry Point
+$e6f5 ; Configuration Data Table
+$e729 ; Baud Rate Generator Table
+$e739 ; INT 14h Serial Communications Service Entry Point
+$e82e ; INT 16h Keyboard Service Entry Point
+$e987 ; INT 09h Keyboard Service Entry Point
+$ec59 ; INT 13h Diskette Service Entry Point
+$ef57 ; INT 0Eh Diskette Hardware ISR Entry Point
+$efc7 ; Diskette Controller Parameter Table
+$efd2 ; INT 17h Printer Service Entry Point
+$f045 ; INT 10 Functions 0-Fh Entry Point
+$f065 ; INT 10h Video Support Service Entry Point
+$f0a4 ; MDA/CGA Video Parameter Table (INT 1Dh)
+$f841 ; INT 12h Memory Size Service Entry Point
+$f84d ; INT 11h Equipment List Service Entry Point
+$f859 ; INT 15h System Services Entry Point
+$fa6e ; Character Font for 320x200 & 640x200 Graphics (lower 128 characters)
+$fe6e ; INT 1Ah Time-of-day Service Entry Point
+$fea5 ; INT 08h System Timer ISR Entry Point
+$fef3 ; Initial Interrupt Vector Offsets Loaded by POST
+$ff53 ; IRET Instruction for Dummy Interrupt Handler
+$ff54 ; INT 05h Print Screen Service Entry Point
+$fff0 ; Power-up Entry Point
+$fff5 ; ASCII Date ROM was built - 8 characters in MM/DD/YY
+$fffe ; System Model ID
+
+*/
+
+/*
+ * See Ralf Brown: http://www.ctyme.com/intr/rb-1594.htm#Table515
+ * for more information.
+ */
+#define BIOS_MODEL 0xFC // PC-AT
+#define BIOS_SUBMODEL 0x01 // AT models 319,339 8 MHz, Enh Keyb, 3.5"
+#define BIOS_REVISION 0x00
+// FIXME: Find a nice PS/2 486 + 487 BIOS combination!
+
+static const BIOS_CONFIG_TABLE BiosConfigTable =
+{
+ sizeof(BIOS_CONFIG_TABLE) - sizeof(((BIOS_CONFIG_TABLE*)0)->Length), // Length: Number of bytes following
+
+ BIOS_MODEL, // BIOS Model
+ BIOS_SUBMODEL, // BIOS Sub-Model
+ BIOS_REVISION, // BIOS Revision
+
+ // Feature bytes
+ {
+ 0x78, // At the moment we don't have any Extended BIOS Area; see http://www.ctyme.com/intr/rb-1594.htm#Table510
+ 0x00, // We don't support anything from here; see http://www.ctyme.com/intr/rb-1594.htm#Table511
+ 0x10, // Bit 4: POST supports ROM-to-RAM enable/disable
+ 0x00,
+ 0x00
+ }
+};
+
+
+/*
+ * WARNING! For compatibility purposes the string "IBM" should be at F000:E00E .
+ * Some programs otherwise look for "COPR. IBM" at F000:E008 .
+ */
+static const CHAR BiosCopyright[] = "0000000 NTVDM IBM COMPATIBLE 486 BIOS COPYRIGHT (C) ReactOS Team 1996-"COPYRIGHT_YEAR;
+static const CHAR BiosVersion[] = "ReactOS NTVDM 32-bit BIOS Version "KERNEL_VERSION_STR"\0"
+ "BIOS32 Version "KERNEL_VERSION_STR" (Build "KERNEL_VERSION_BUILD_STR")";
+static const CHAR BiosDate[] = "06/17/13";
+
+C_ASSERT(sizeof(BiosCopyright)-1 <= 0x5B); // Ensures that we won't overflow on the POST Code starting at F000:E05B
+C_ASSERT(sizeof(BiosDate)-1 == 0x08);
+
+/* 16-bit bootstrap code at F000:FFF0 */
+static const BYTE Bootstrap[] =
+{
+ 0xEA, // jmp far ptr
+ 0x5B, 0xE0, 0x00, 0xF0, // F000:E05B
+};
+
+/*
+ * POST code at F000:E05B. All the POST is done in 32 bit
+ * and only at the end it calls the bootstrap interrupt.
+ */
+static const BYTE PostCode[] =
+{
+ LOBYTE(EMULATOR_BOP), HIBYTE(EMULATOR_BOP), BOP_RESET, // Call BIOS POST
+ 0xCD, BIOS_BOOTSTRAP_LOADER, // INT 0x19
+ 0xCD, BIOS_ROM_BASIC, // INT 0x18
+ LOBYTE(EMULATOR_BOP), HIBYTE(EMULATOR_BOP), BOP_UNSIMULATE
+};
+
+
+/* PRIVATE FUNCTIONS **********************************************************/
+
+static VOID BiosCharPrint(CHAR Character)
+{
+ /* Save AX and BX */
+ USHORT AX = getAX();
+ USHORT BX = getBX();
+
+ /*
+ * Set the parameters:
+ * AL contains the character to print,
+ * BL contains the character attribute,
+ * BH contains the video page to use.
+ */
+ setAL(Character);
+ setBL(DEFAULT_ATTRIBUTE);
+ setBH(Bda->VideoPage);
+
+ /* Call the BIOS INT 10h, AH=0Eh "Teletype Output" */
+ setAH(0x0E);
+ Int32Call(&BiosContext, BIOS_VIDEO_INTERRUPT);
+
+ /* Restore AX and BX */
+ setBX(BX);
+ setAX(AX);
+}
+
+static VOID WINAPI BiosException(LPWORD Stack)
+{
+ /* Get the exception number and call the emulator API */
+ BYTE ExceptionNumber = LOBYTE(Stack[STACK_INT_NUM]);
+ EmulatorException(ExceptionNumber, Stack);
+}
+
+VOID WINAPI BiosEquipmentService(LPWORD Stack)
+{
+ /* Return the equipment list */
+ setAX(Bda->EquipmentList);
+}
+
+VOID WINAPI BiosGetMemorySize(LPWORD Stack)
+{
+ /* Return the conventional memory size in kB, typically 640 kB */
+ setAX(Bda->MemorySize);
+}
+
+static VOID WINAPI BiosMiscService(LPWORD Stack)
+{
+ switch (getAH())
+ {
+ /* OS Hooks for Multitasking */
+ case 0x80: // Device Open
+ case 0x81: // Device Close
+ case 0x82: // Program Termination
+ case 0x90: // Device Busy
+ case 0x91: // Device POST
+ {
+ /* Return success by default */
+ setAH(0x00);
+ Stack[STACK_FLAGS] &= ~EMULATOR_FLAG_CF;
+ break;
+ }
+
+ /* Wait on External Event */
+ case 0x41:
+ {
+ BYTE Value;
+ BOOLEAN Return;
+ static DWORD StartingCount;
+
+ /* Check if this is the first time this BOP occurred */
+ if (!getCF())
+ {
+ /* Set the starting count */
+ StartingCount = Bda->TickCounter;
+ }
+
+ if (getBL() != 0 && (Bda->TickCounter - StartingCount) >= getBL())
+ {
+ /* Timeout expired */
+ setCF(0);
+ break;
+ }
+
+ if (getAL() & (1 << 4))
+ {
+ /* Read from the I/O port */
+ Value = IOReadB(getDX());
+ }
+ else
+ {
+ /* Read from the memory */
+ Value = *(LPBYTE)SEG_OFF_TO_PTR(getES(), getDI());
+ }
+
+ switch (getAL() & 7)
+ {
+ /* Any external event */
+ case 0:
+ {
+ /* Return if this is not the first time the BOP occurred */
+ Return = getCF();
+ break;
+ }
+
+ /* Compare and return if equal */
+ case 1:
+ {
+ Return = Value == getBH();
+ break;
+ }
+
+ /* Compare and return if not equal */
+ case 2:
+ {
+ Return = Value != getBH();
+ break;
+ }
+
+ /* Test and return if not zero */
+ case 3:
+ {
+ Return = (Value & getBH()) != 0;
+ break;
+ }
+
+ /* Test and return if zero */
+ case 4:
+ {
+ Return = (Value & getBH()) == 0;
+ break;
+ }
+
+ default:
+ {
+ DPRINT1("INT 15h, AH = 41h - Unknown condition type: %u\n", getAL() & 7);
+ Return = TRUE;
+ break;
+ }
+ }
+
+ /* Repeat the BOP if we shouldn't return */
+ setCF(!Return);
+ break;
+ }
+
+ /* Keyboard intercept */
+ case 0x4F:
+ {
+ /* CF should be set but let's just set it again just in case */
+ /* Do not modify AL (the hardware scan code), but set CF to continue processing */
+ // setCF(1);
+ Stack[STACK_FLAGS] |= EMULATOR_FLAG_CF;
+ break;
+ }
+
+ /* Wait */
+ case 0x86:
+ {
+ /*
+ * Interval in microseconds in CX:DX
+ * See Ralf Brown: http://www.ctyme.com/intr/rb-1525.htm
+ * for more information.
+ */
+
+ static ULONG CompletionTime = 0;
+
+ /* Check if we're already looping */
+ if (getCF())
+ {
+ if (GetTickCount() >= CompletionTime)
+ {
+ /* Stop looping */
+ setCF(0);
+
+ /* Clear the CF on the stack too */
+ Stack[STACK_FLAGS] &= ~EMULATOR_FLAG_CF;
+ }
+ }
+ else
+ {
+ /* Set the CF on the stack */
+ Stack[STACK_FLAGS] |= EMULATOR_FLAG_CF;
+
+ /* Set the completion time and start looping */
+ CompletionTime = GetTickCount() + (MAKELONG(getDX(), getCX()) / 1000);
+ setCF(1);
+ }
+
+ break;
+ }
+
+ /* Copy Extended Memory */
+ case 0x87:
+ {
+ DWORD Count = (DWORD)getCX() * 2;
+ PFAST486_GDT_ENTRY Gdt = (PFAST486_GDT_ENTRY)SEG_OFF_TO_PTR(getES(), getSI());
+ DWORD SourceBase = Gdt[2].Base + (Gdt[2].BaseMid << 16) + (Gdt[2].BaseHigh << 24);
+ DWORD SourceLimit = Gdt[2].Limit + (Gdt[2].LimitHigh << 16);
+ DWORD DestBase = Gdt[3].Base + (Gdt[3].BaseMid << 16) + (Gdt[3].BaseHigh << 24);
+ DWORD DestLimit = Gdt[3].Limit + (Gdt[3].LimitHigh << 16);
+
+ /* Check for flags */
+ if (Gdt[2].Granularity) SourceLimit = (SourceLimit << 12) | 0xFFF;
+ if (Gdt[3].Granularity) DestLimit = (DestLimit << 12) | 0xFFF;
+
+ if ((Count > SourceLimit) || (Count > DestLimit))
+ {
+ setAX(0x80);
+ Stack[STACK_FLAGS] |= EMULATOR_FLAG_CF;
+ break;
+ }
+
+ /* Copy */
+ RtlMoveMemory((PVOID)((ULONG_PTR)BaseAddress + DestBase),
+ (PVOID)((ULONG_PTR)BaseAddress + SourceBase),
+ Count);
+
+ setAX(ERROR_SUCCESS);
+ Stack[STACK_FLAGS] &= ~EMULATOR_FLAG_CF;
+ break;
+ }
+
+ /* Get Extended Memory Size */
+ case 0x88:
+ {
+ UCHAR Low, High;
+
+ /*
+ * Return the (usable) extended memory (after 1 MB)
+ * size in kB from CMOS.
+ */
+ IOWriteB(CMOS_ADDRESS_PORT, CMOS_REG_ACTUAL_EXT_MEMORY_LOW | CMOS_DISABLE_NMI);
+ Low = IOReadB(CMOS_DATA_PORT);
+ IOWriteB(CMOS_ADDRESS_PORT, CMOS_REG_ACTUAL_EXT_MEMORY_HIGH | CMOS_DISABLE_NMI);
+ High = IOReadB(CMOS_DATA_PORT);
+ setAX(MAKEWORD(Low, High));
+
+ /* Clear CF */
+ Stack[STACK_FLAGS] &= ~EMULATOR_FLAG_CF;
+ break;
+ }
+
+ /* Switch to Protected Mode */
+ case 0x89:
+ {
+ DPRINT1("BIOS INT 15h, AH=89h \"Switch to Protected Mode\" is UNIMPLEMENTED");
+
+ Stack[STACK_FLAGS] |= EMULATOR_FLAG_CF;
+ goto Default;
+ }
+
+ /* Get Configuration */
+ case 0xC0:
+ {
+ /* Return the BIOS ROM Configuration Table address in ES:BX */
+ // The BCT is found at F000:E6F5 for 100% compatible BIOSes.
+ setES(BIOS_SEGMENT);
+ setBX(0xE6F5);
+
+ /* Call successful; clear CF */
+ setAH(0x00);
+ Stack[STACK_FLAGS] &= ~EMULATOR_FLAG_CF;
+ break;
+ }
+
+ /* Return Extended-Bios Data-Area Segment Address (PS) */
+ case 0xC1:
+ {
+ /* We do not support EBDA yet */
+ UNIMPLEMENTED;
+ Stack[STACK_FLAGS] |= EMULATOR_FLAG_CF;
+ goto Default;
+ }
+
+ /* Pointing Device BIOS Interface (PS) */
+ case 0xC2:
+ {
+ // FIXME: Reenable this call when we understand why
+ // our included mouse driver doesn't correctly reeanble
+ // mouse reporting!
+ // BiosMousePs2Interface(Stack);
+ // break;
+ goto Default;
+ }
+
+ /* Get CPU Type and Mask Revision */
+ case 0xC9:
+ {
+ /*
+ * We can see this function as a CPUID replacement.
+ * See Ralf Brown: http://www.ctyme.com/intr/rb-1613.htm
+ * for more information.
+ */
+
+ /*
+ * Fast486 is a 486DX with FPU included,
+ * but old enough to not support CPUID.
+ */
+ setCX(0x0400);
+
+ /* Call successful; clear CF */
+ setAH(0x00);
+ Stack[STACK_FLAGS] &= ~EMULATOR_FLAG_CF;
+ break;
+ }
+
+ /* Get System Memory Map */
+ case 0xE8:
+ {
+ if (getAL() == 0x01)
+ {
+ /* The amount of memory between 1M and 16M, in kilobytes */
+ ULONG Above1M = (min(MAX_ADDRESS, 0x01000000) - 0x00100000) >> 10;
+
+ /* The amount of memory above 16M, in 64K blocks */
+ ULONG Above16M = (MAX_ADDRESS > 0x01000000) ? ((MAX_ADDRESS - 0x01000000) >> 16) : 0;
+
+ setAX(Above1M);
+ setBX(Above16M);
+ setCX(Above1M);
+ setDX(Above16M);
+
+ Stack[STACK_FLAGS] &= ~EMULATOR_FLAG_CF;
+ }
+ else if (getAL() == 0x20 && getEDX() == 'SMAP')
+ {
+ ULONG Offset = getEBX();
+ ULONG Length;
+ ULONG BytesWritten = 0;
+ BOOLEAN Hooked;
+ PBIOS_MEMORY_MAP Map = (PBIOS_MEMORY_MAP)SEG_OFF_TO_PTR(getES(), getDI());
+
+ /* Assume the buffer won't be large enough */
+ Stack[STACK_FLAGS] &= ~EMULATOR_FLAG_CF;
+
+ while (BytesWritten < getECX() && (ULONG_PTR)Map < (MAX_ADDRESS - sizeof(BIOS_MEMORY_MAP)))
+ {
+ /* Let's ask our memory controller */
+ if (!MemQueryMemoryZone(Offset, &Length, &Hooked))
+ {
+ /* No more memory blocks */
+ Stack[STACK_FLAGS] |= EMULATOR_FLAG_CF;
+ break;
+ }
+
+ Map->BaseAddress = (ULONGLONG)Offset;
+ Map->Length = (ULONGLONG)Length;
+ Map->Type = Hooked ? BIOS_MEMORY_RESERVED : BIOS_MEMORY_AVAILABLE;
+
+ /* Go to the next record */
+ Map++;
+ Offset += Length;
+ BytesWritten += sizeof(BIOS_MEMORY_MAP);
+ }
+
+ setEAX('SMAP');
+ setEBX(Offset);
+ setECX(BytesWritten);
+ }
+ else
+ {
+ DPRINT1("BIOS Function INT 15h, AH = 0xE8 - unexpected AL = %02X, EDX = %08X\n",
+ getAL(), getEDX());
+ }
+
+ break;
+ }
+
+ default: Default:
+ {
+ DPRINT1("BIOS Function INT 15h, AH = 0x%02X NOT IMPLEMENTED\n",
+ getAH());
+
+ /*
+ * The original signification of the error code 0x86 is that
+ * no PC Cassette is present. The CF is also set in this case.
+ * To keep backward compatibility, newer BIOSes use this value
+ * to indicate an unimplemented call in INT 15h.
+ */
+ setAH(0x86);
+ Stack[STACK_FLAGS] |= EMULATOR_FLAG_CF;
+ }
+ }
+}
+
+static VOID WINAPI BiosRomBasic(LPWORD Stack)
+{
+ PrintMessageAnsi(BiosCharPrint, "FATAL: INT18: BOOT FAILURE.");
+
+ /* ROM Basic is unsupported, display a message to the user */
+ DisplayMessage(L"NTVDM doesn't support ROM Basic. The VDM is closing.");
+
+ /* Stop the VDM */
+ EmulatorTerminate();
+}
+
+
+extern VOID DosBootsectorInitialize(VOID);
+extern VOID WINAPI BiosDiskService(LPWORD Stack);
+
+static VOID WINAPI BiosBootstrapLoader(LPWORD Stack)
+{
+ USHORT BootOrder;
+
+ USHORT AX, BX, CX, DX, ES;
+ AX = getAX();
+ BX = getBX();
+ CX = getCX();
+ DX = getDX();
+ ES = getES();
+
+ /*
+ * Read the boot sequence order from the CMOS, old behaviour AMI-style.
+ *
+ * For more information, see:
+ * http://www.virtualbox.org/svn/vbox/trunk/src/VBox/Devices/PC/BIOS/orgs.asm
+ * http://www.virtualbox.org/svn/vbox/trunk/src/VBox/Devices/PC/BIOS/boot.c
+ * http://bochs.sourceforge.net/cgi-bin/lxr/source/iodev/cmos.cc
+ * https://web.archive.org/web/20111209041013/http://www-ivs.cs.uni-magdeburg.de/~zbrog/asm/cmos.html
+ * http://www.bioscentral.com/misc/cmosmap.htm
+ */
+ IOWriteB(CMOS_ADDRESS_PORT, CMOS_REG_SYSOP);
+ BootOrder = (IOReadB(CMOS_DATA_PORT) & 0x20) >> 5;
+
+ /*
+ * BootOrder =
+ * 0: Hard Disk, then Floppy Disk
+ * 1: Floppy Disk, then Hard Disk
+ * In all cases, if booting from those devices failed,
+ * ROM DOS-32 is started. If it fails, INT 18h is called.
+ */
+
+ DPRINT("BiosBootstrapLoader (BootOrder = 0x%02X) -->\n", BootOrder);
+
+ /*
+ * Format of the BootOrder command:
+ * 2 bytes. Each half-byte contains the ID of the drive to boot.
+ * Currently defined:
+ * 0x0: 1st Floppy disk
+ * 0x1: 1st Hard disk
+ * Other, or 0xF: Stop boot sequence.
+ */
+ BootOrder = 0xFF00 | ((1 << (4 * BootOrder)) & 0xFF);
+
+Retry:
+ switch (BootOrder & 0x0F)
+ {
+ /* Boot from 1st floppy drive */
+ case 0:
+ {
+ setAH(0x02); // Read sectors
+ setAL(0x01); // Number of sectors
+ setDH(0x00); // Head 0
+ setCH(0x00); // Cylinder 0
+ setCL(0x01); // Sector 1
+ setDL(0x00); // First diskette drive (used by loader code, so should not be cleared)
+ setES(0x0000); // Write data in 0000:7C00
+ setBX(0x7C00);
+ BiosDiskService(Stack);
+ if (!(Stack[STACK_FLAGS] & EMULATOR_FLAG_CF)) goto Quit;
+ DPRINT1("An error happened while loading the bootsector from floppy 0, error = %d\n", getAH());
+
+ break;
+ }
+
+ /* Boot from 1st HDD drive */
+ case 1:
+ {
+ setAH(0x02); // Read sectors
+ setAL(0x01); // Number of sectors
+ setDH(0x00); // Head 0
+ setCH(0x00); // Cylinder 0
+ setCL(0x01); // Sector 1
+ setDL(0x80); // First HDD drive (used by loader code, so should not be cleared)
+ setES(0x0000); // Write data in 0000:7C00
+ setBX(0x7C00);
+ BiosDiskService(Stack);
+ if (!(Stack[STACK_FLAGS] & EMULATOR_FLAG_CF)) goto Quit;
+ DPRINT1("An error happened while loading the bootsector from HDD 0, error = %d\n", getAH());
+
+ break;
+ }
+
+ default:
+ goto StartDos;
+ }
+
+ /* Go to next drive and invalidate the last half-byte. */
+ BootOrder = (BootOrder >> 4) | 0xF000;
+ goto Retry;
+
+StartDos:
+ /* Clear everything, we are going to load DOS32 */
+ setAX(AX);
+ setBX(BX);
+ setCX(CX);
+ setDX(DX);
+ setES(ES);
+ Stack[STACK_FLAGS] &= ~EMULATOR_FLAG_CF;
+
+ /* Load our DOS */
+ DosBootsectorInitialize();
+
+Quit:
+ /*
+ * Jump to 0000:7C00 to boot the OS.
+ *
+ * Since we are called via the INT32 mechanism, we need to correctly set
+ * CS:IP, not by changing the current one (otherwise the interrupt could
+ * not be clean up and return properly), but by changing the CS:IP in the
+ * stack, so that when the interrupt returns, the modified CS:IP is popped
+ * off the stack and the CPU is correctly repositioned.
+ */
+ Stack[STACK_CS] = 0x0000;
+ Stack[STACK_IP] = 0x7C00;
+
+ DPRINT("<-- BiosBootstrapLoader\n");
+}
+
+static VOID WINAPI BiosTimeService(LPWORD Stack)
+{
+ switch (getAH())
+ {
+ /* Get System Time */
+ case 0x00:
+ {
+ /* Set AL to 1 if midnight had passed, 0 otherwise */
+ setAL(Bda->MidnightPassed ? 0x01 : 0x00);
+
+ /* Return the tick count in CX:DX */
+ setCX(HIWORD(Bda->TickCounter));
+ setDX(LOWORD(Bda->TickCounter));
+
+ /* Reset the midnight flag */
+ Bda->MidnightPassed = FALSE;
+
+ break;
+ }
+
+ /* Set System Time */
+ case 0x01:
+ {
+ /* Set the tick count to CX:DX */
+ Bda->TickCounter = MAKELONG(getDX(), getCX());
+
+ /* Reset the midnight flag */
+ Bda->MidnightPassed = FALSE;
+
+ break;
+ }
+
+ /* Get Real-Time Clock Time */
+ case 0x02:
+ {
+ UCHAR StatusB;
+
+ IOWriteB(CMOS_ADDRESS_PORT, CMOS_REG_HOURS);
+ setCH(IOReadB(CMOS_DATA_PORT));
+
+ IOWriteB(CMOS_ADDRESS_PORT, CMOS_REG_MINUTES);
+ setCL(IOReadB(CMOS_DATA_PORT));
+
+ IOWriteB(CMOS_ADDRESS_PORT, CMOS_REG_SECONDS);
+ setDH(IOReadB(CMOS_DATA_PORT));
+
+ /* Daylight Savings Time */
+ IOWriteB(CMOS_ADDRESS_PORT, CMOS_REG_STATUS_B);
+ StatusB = IOReadB(CMOS_DATA_PORT);
+ setDL(StatusB & 0x01);
+
+ /* Clear CF */
+ Stack[STACK_FLAGS] &= ~EMULATOR_FLAG_CF;
+ break;
+ }
+
+ // /* Set Real-Time Clock Time */
+ // case 0x03:
+ // {
+ // break;
+ // }
+
+ /* Get Real-Time Clock Date */
+ case 0x04:
+ {
+ IOWriteB(CMOS_ADDRESS_PORT, CMOS_REG_CENTURY);
+ setCH(IOReadB(CMOS_DATA_PORT));
+
+ IOWriteB(CMOS_ADDRESS_PORT, CMOS_REG_YEAR);
+ setCL(IOReadB(CMOS_DATA_PORT));
+
+ IOWriteB(CMOS_ADDRESS_PORT, CMOS_REG_MONTH);
+ setDH(IOReadB(CMOS_DATA_PORT));
+
+ IOWriteB(CMOS_ADDRESS_PORT, CMOS_REG_DAY);
+ setDL(IOReadB(CMOS_DATA_PORT));
+
+ /* Clear CF */
+ Stack[STACK_FLAGS] &= ~EMULATOR_FLAG_CF;
+ break;
+ }
+
+ // /* Set Real-Time Clock Date */
+ // case 0x05:
+ // {
+ // break;
+ // }
+
+ default:
+ {
+ DPRINT1("BIOS Function INT 1Ah, AH = 0x%02X NOT IMPLEMENTED\n",
+ getAH());
+ }
+ }
+}
+
+static VOID WINAPI BiosSystemTimerInterrupt(LPWORD Stack)
+{
+ /* Increase the system tick count */
+ Bda->TickCounter++;
+}
+
+
+// From SeaBIOS
+static VOID PicSetIRQMask(USHORT off, USHORT on)
+{
+ UCHAR pic1off = off, pic1on = on, pic2off = off>>8, pic2on = on>>8;
+ IOWriteB(PIC_MASTER_DATA, (IOReadB(PIC_MASTER_DATA) & ~pic1off) | pic1on);
+ IOWriteB(PIC_SLAVE_DATA , (IOReadB(PIC_SLAVE_DATA ) & ~pic2off) | pic2on);
+}
+
+// From SeaBIOS
+VOID EnableHwIRQ(UCHAR hwirq, EMULATOR_INT32_PROC func)
+{
+ UCHAR vector;
+
+ PicSetIRQMask(1 << hwirq, 0);
+ if (hwirq < 8)
+ vector = BIOS_PIC_MASTER_INT + hwirq;
+ else
+ vector = BIOS_PIC_SLAVE_INT + hwirq - 8;
+
+ RegisterBiosInt32(vector, func);
+}
+
+
+VOID PicIRQComplete(BYTE IntNum)
+{
+ /*
+ * If this was a PIC IRQ, send an End-of-Interrupt to the PIC.
+ */
+ if (IntNum >= BIOS_PIC_MASTER_INT && IntNum < BIOS_PIC_MASTER_INT + 8)
+ {
+ /* It was an IRQ from the master PIC */
+ IOWriteB(PIC_MASTER_CMD, PIC_OCW2_EOI);
+ }
+ else if (IntNum >= BIOS_PIC_SLAVE_INT && IntNum < BIOS_PIC_SLAVE_INT + 8)
+ {
+ /* It was an IRQ from the slave PIC */
+ IOWriteB(PIC_SLAVE_CMD , PIC_OCW2_EOI);
+ IOWriteB(PIC_MASTER_CMD, PIC_OCW2_EOI);
+ }
+}
+
+static VOID WINAPI BiosHandleMasterPicIRQ(LPWORD Stack)
+{
+ BYTE IrqNumber;
+
+ IOWriteB(PIC_MASTER_CMD, PIC_OCW3_READ_ISR /* == 0x0B */);
+ IrqNumber = IOReadB(PIC_MASTER_CMD);
+
+ DPRINT("Master - IrqNumber = 0x%02X\n", IrqNumber);
+
+ PicIRQComplete(LOBYTE(Stack[STACK_INT_NUM]));
+}
+
+static VOID WINAPI BiosHandleSlavePicIRQ(LPWORD Stack)
+{
+ BYTE IrqNumber;
+
+ IOWriteB(PIC_SLAVE_CMD, PIC_OCW3_READ_ISR /* == 0x0B */);
+ IrqNumber = IOReadB(PIC_SLAVE_CMD);
+
+ DPRINT("Slave - IrqNumber = 0x%02X\n", IrqNumber);
+
+ PicIRQComplete(LOBYTE(Stack[STACK_INT_NUM]));
+}
+
+// Timer IRQ 0
+static VOID WINAPI BiosTimerIrq(LPWORD Stack)
+{
+ /*
+ * Perform the system timer interrupt.
+ *
+ * Do not call directly BiosSystemTimerInterrupt(Stack);
+ * because some programs may hook only BIOS_SYS_TIMER_INTERRUPT
+ * for their purpose...
+ */
+
+ WORD AX = getAX();
+ WORD CX = getCX();
+ WORD DX = getDX();
+ WORD BX = getBX();
+ WORD BP = getBP();
+ WORD SI = getSI();
+ WORD DI = getDI();
+ WORD DS = getDS();
+ WORD ES = getES();
+
+ Int32Call(&BiosContext, BIOS_SYS_TIMER_INTERRUPT);
+
+ setAX(AX);
+ setCX(CX);
+ setDX(DX);
+ setBX(BX);
+ setBP(BP);
+ setSI(SI);
+ setDI(DI);
+ setDS(DS);
+ setES(ES);
+ setCF(0);
+
+ // BiosSystemTimerInterrupt(Stack);
+ PicIRQComplete(LOBYTE(Stack[STACK_INT_NUM]));
+}
+
+
+static VOID BiosHwSetup(VOID)
+{
+ /* Initialize the master and the slave PICs (cascade mode) */
+ IOWriteB(PIC_MASTER_CMD, PIC_ICW1 | PIC_ICW1_ICW4);
+ IOWriteB(PIC_SLAVE_CMD , PIC_ICW1 | PIC_ICW1_ICW4);
+
+ /*
+ * Set the interrupt vector offsets for each PIC
+ * (base IRQs: 0x08-0x0F for IRQ 0-7, 0x70-0x77 for IRQ 8-15)
+ */
+ IOWriteB(PIC_MASTER_DATA, BIOS_PIC_MASTER_INT);
+ IOWriteB(PIC_SLAVE_DATA , BIOS_PIC_SLAVE_INT );
+
+ /* Tell the master PIC that there is a slave PIC at IRQ 2 */
+ IOWriteB(PIC_MASTER_DATA, 1 << 2);
+ /* Tell the slave PIC its cascade identity */
+ IOWriteB(PIC_SLAVE_DATA , 2);
+
+ /* Make sure both PICs are in 8086 mode */
+ IOWriteB(PIC_MASTER_DATA, PIC_ICW4_8086);
+ IOWriteB(PIC_SLAVE_DATA , PIC_ICW4_8086);
+
+ /* Clear the masks for both PICs */
+ // IOWriteB(PIC_MASTER_DATA, 0x00);
+ // IOWriteB(PIC_SLAVE_DATA , 0x00);
+ /* Disable all IRQs */
+ IOWriteB(PIC_MASTER_DATA, 0xFF);
+ IOWriteB(PIC_SLAVE_DATA , 0xFF);
+
+
+ /* Initialize PIT Counter 0 - Mode 2, 16bit binary count */
+ // NOTE: Some BIOSes set it to Mode 3 instead.
+ IOWriteB(PIT_COMMAND_PORT, 0x34);
+ // 18.2Hz refresh rate
+ IOWriteB(PIT_DATA_PORT(0), 0x00);
+ IOWriteB(PIT_DATA_PORT(0), 0x00);
+
+ /* Initialize PIT Counter 1 - Mode 2, 8bit binary count */
+ IOWriteB(PIT_COMMAND_PORT, 0x54);
+ // DRAM refresh every 15ms: http://www.cs.dartmouth.edu/~spl/Academic/Organization/docs/PC%20Timer%208253.html
+ IOWriteB(PIT_DATA_PORT(1), 18);
+
+ /* Initialize PIT Counter 2 - Mode 3, 16bit binary count */
+ IOWriteB(PIT_COMMAND_PORT, 0xB6);
+ // Count for 440Hz
+ IOWriteB(PIT_DATA_PORT(2), 0x97);
+ IOWriteB(PIT_DATA_PORT(2), 0x0A);
+
+
+ /* Initialize PS/2 keyboard port */
+ // Enable the port
+ IOWriteB(PS2_CONTROL_PORT, 0xAE);
+ // Port interrupts and clock enabled,
+ // enable keyboard scancode translation.
+ // POST passed, force keyboard unlocking.
+ IOWriteB(PS2_CONTROL_PORT, 0x60);
+ IOWriteB(PS2_DATA_PORT , 0x6D);
+ // Enable data reporting
+ IOWriteB(PS2_DATA_PORT , 0xF4);
+
+ EnableHwIRQ(0, BiosTimerIrq);
+}
+
+static VOID InitializeBiosInt32(VOID)
+{
+ USHORT i;
+
+ /* Initialize the callback context */
+ InitializeContext(&BiosContext, BIOS_SEGMENT, 0x0000);
+
+ /* Register the default BIOS interrupt vectors */
+
+ /*
+ * Zero out all of the IVT (0x00 -- 0xFF). Some applications
+ * indeed expect to have free vectors at the end of the IVT.
+ */
+ RtlZeroMemory(BaseAddress, 0x0100 * sizeof(ULONG));
+
+#if defined(ADVANCED_DEBUGGING) && (ADVANCED_DEBUGGING_LEVEL >= 3)
+ // Initialize all the interrupt vectors to the default one.
+ for (i = 0x00; i <= 0xFF; i++)
+ RegisterBiosInt32(i, NULL);
+#endif
+
+ /* Initialize the exception interrupt vectors to a default Exception handler */
+ for (i = 0x00; i <= 0x07; i++)
+ RegisterBiosInt32(i, BiosException);
+
+ /* Initialize HW interrupt vectors to a default HW handler */
+ for (i = BIOS_PIC_MASTER_INT; i < BIOS_PIC_MASTER_INT + 8; i++) // 0x08 -- 0x0F
+ RegisterBiosInt32(i, BiosHandleMasterPicIRQ);
+ for (i = BIOS_PIC_SLAVE_INT ; i < BIOS_PIC_SLAVE_INT + 8; i++) // 0x70 -- 0x77
+ RegisterBiosInt32(i, BiosHandleSlavePicIRQ);
+
+ /* Initialize software vector handlers */
+ // BIOS_VIDEO_INTERRUPT : 0x10 (vidbios32.c)
+ RegisterBiosInt32(BIOS_EQUIPMENT_INTERRUPT, BiosEquipmentService );
+ RegisterBiosInt32(BIOS_MEMORY_SIZE , BiosGetMemorySize );
+ // BIOS_DISK_INTERRUPT : 0x13 (dskbios32.c)
+ // BIOS_SERIAL_INTERRUPT : 0x14 -- UNIMPLEMENTED
+ RegisterBiosInt32(BIOS_MISC_INTERRUPT , BiosMiscService );
+ // BIOS_KBD_INTERRUPT : 0x16 (kbdbios32.c)
+ // BIOS_PRINTER_INTERRUPT: 0x17 -- UNIMPLEMENTED
+ RegisterBiosInt32(BIOS_ROM_BASIC , BiosRomBasic );
+ RegisterBiosInt32(BIOS_BOOTSTRAP_LOADER , BiosBootstrapLoader );
+ RegisterBiosInt32(BIOS_TIME_INTERRUPT , BiosTimeService );
+ // BIOS_KBD_CTRL_BREAK_INTERRUPT: 0x1B -- UNIMPLEMENTED
+ RegisterBiosInt32(BIOS_SYS_TIMER_INTERRUPT, BiosSystemTimerInterrupt);
+
+ /* Vectors that should be implemented (see above) */
+ RegisterBiosInt32(0x14, NULL);
+ RegisterBiosInt32(0x17, NULL);
+ RegisterBiosInt32(0x1B, NULL);
+ RegisterBiosInt32(0x4A, NULL); // User Alarm Handler
+
+ /* Relocated services by the BIOS (when needed) */
+ RegisterBiosInt32(0x40, NULL); // ROM BIOS Diskette Handler relocated by Hard Disk BIOS
+ RegisterBiosInt32(0x42, NULL); // Relocated Default INT 10h Video Services
+
+ /* Miscellaneous unimplemented vector handlers that should better have a default one */
+ RegisterBiosInt32(0x4B, NULL); // Virtual DMA Specification Services
+ RegisterBiosInt32(0x5C, NULL); // NetBIOS
+
+ // ROM-BASIC interrupts span from 0x80 up to 0xEF.
+ // They don't have any default handler at the moment.
+
+ /* Some vectors are in fact addresses to tables */
+ ((PULONG)BaseAddress)[0x1D] = (ULONG)NULL; // Video Parameter Tables
+ ((PULONG)BaseAddress)[0x1E] = (ULONG)NULL; // Diskette Parameters
+ ((PULONG)BaseAddress)[0x1F] = (ULONG)NULL; // 8x8 Graphics Font
+ ((PULONG)BaseAddress)[0x41] = (ULONG)NULL; // Hard Disk 0 Parameter Table Address
+ ((PULONG)BaseAddress)[0x43] = (ULONG)NULL; // Character Table (EGA, MCGA, VGA)
+ ((PULONG)BaseAddress)[0x46] = (ULONG)NULL; // Hard Disk 1 Drive Parameter Table Address
+ /* Tables that are always uninitialized */
+ ((PULONG)BaseAddress)[0x44] = (ULONG)NULL; // ROM BIOS Character Font, Characters 00h-7Fh (PCjr)
+ ((PULONG)BaseAddress)[0x48] = (ULONG)NULL; // Cordless Keyboard Translation (PCjr)
+ ((PULONG)BaseAddress)[0x49] = (ULONG)NULL; // Non-Keyboard Scan-code Translation Table (PCJr)
+}
+
+static VOID InitializeBiosData(VOID)
+{
+ UCHAR Low, High;
+
+ /* Initialize the BDA contents */
+ RtlZeroMemory(Bda, sizeof(*Bda));
+
+ /*
+ * Retrieve the basic equipment list from the CMOS
+ */
+ IOWriteB(CMOS_ADDRESS_PORT, CMOS_REG_EQUIPMENT_LIST | CMOS_DISABLE_NMI);
+ Bda->EquipmentList = IOReadB(CMOS_DATA_PORT);
+ // TODO: Update it if required.
+ Bda->EquipmentList &= 0x00FF; // High byte cleared for now...
+
+ /*
+ * Retrieve the conventional memory size
+ * in kB from the CMOS, typically 640 kB.
+ */
+ IOWriteB(CMOS_ADDRESS_PORT, CMOS_REG_BASE_MEMORY_LOW | CMOS_DISABLE_NMI);
+ Low = IOReadB(CMOS_DATA_PORT);
+ IOWriteB(CMOS_ADDRESS_PORT, CMOS_REG_BASE_MEMORY_HIGH | CMOS_DISABLE_NMI);
+ High = IOReadB(CMOS_DATA_PORT);
+ Bda->MemorySize = MAKEWORD(Low, High);
+}
+
+
+/*
+ * The BIOS POST (Power On-Self Test)
+ */
+/*static*/ VOID
+WINAPI
+Bios32Post(LPWORD Stack)
+{
+ static BOOLEAN FirstBoot = TRUE;
+ BYTE ShutdownStatus;
+
+ /*
+ * Initialize BIOS/Keyboard/Video RAM dynamic data
+ */
+
+ DPRINT("Bios32Post\n");
+
+ /* Disable interrupts */
+ setIF(0);
+
+ /* Set the data segment */
+ setDS(BDA_SEGMENT);
+
+ /* Initialize the stack */
+ // Temporary stack for POST (to be used only before initializing the INT vectors)
+ // setSS(0x0000);
+ // setSP(0x0400);
+ //
+ // Stack to be used after the initialization of the INT vectors
+ setSS(0x0000); // Stack at 00:8000, going downwards
+ setSP(0x8000);
+
+ /*
+ * Perform early CMOS shutdown status checks
+ */
+
+ /* Read the CMOS shutdown status byte and reset it */
+ IOWriteB(CMOS_ADDRESS_PORT, CMOS_REG_SHUTDOWN_STATUS | CMOS_DISABLE_NMI);
+ ShutdownStatus = IOReadB(CMOS_DATA_PORT);
+ IOWriteB(CMOS_ADDRESS_PORT, CMOS_REG_SHUTDOWN_STATUS | CMOS_DISABLE_NMI);
+ IOWriteB(CMOS_DATA_PORT, 0x00);
+
+ DPRINT1("Bda->SoftReset = 0x%04X ; ShutdownStatus = 0x%02X\n",
+ Bda->SoftReset, ShutdownStatus);
+
+ switch (ShutdownStatus)
+ {
+ /* Shutdown after Memory Tests (unsupported) */
+ case 0x01: case 0x02: case 0x03:
+ /* Shutdown after Protected Mode Tests (unsupported) */
+ case 0x06: case 0x07: case 0x08:
+ /* Shutdown after Block Move Test (unsupported) */
+ case 0x09:
+ {
+ DisplayMessage(L"Unsupported CMOS Shutdown Status value 0x%02X. The VDM will shut down.", ShutdownStatus);
+ EmulatorTerminate();
+ return;
+ }
+
+ /* Shutdown to Boot Loader */
+ case 0x04:
+ {
+ DPRINT1("Fast restart to Bootstrap Loader...\n");
+ goto Quit; // Reenable interrupts and exit.
+ }
+
+ /* Flush keyboard, issue an EOI... */
+ case 0x05:
+ {
+ IOReadB(PS2_DATA_PORT);
+
+ /* Send EOI */
+ IOWriteB(PIC_SLAVE_CMD , PIC_OCW2_EOI);
+ IOWriteB(PIC_MASTER_CMD, PIC_OCW2_EOI);
+
+ // Fall back
+ }
+
+ /*
+ * ... and far JMP to user-specified location at 0040:0067
+ * (Bda->ResumeEntryPoint) with interrupts and NMI disabled.
+ */
+ case 0x0A:
+ {
+ DPRINT1("Bda->ResumeEntryPoint = %04X:%04X\n",
+ HIWORD(Bda->ResumeEntryPoint),
+ LOWORD(Bda->ResumeEntryPoint));
+
+ /* Position execution pointers and return with interrupts disabled */
+ setCS(HIWORD(Bda->ResumeEntryPoint));
+ setIP(LOWORD(Bda->ResumeEntryPoint));
+ return;
+ }
+
+ /* Soft reset or unexpected shutdown... */
+ case 0x00:
+ /* ... or other possible shutdown codes: just continue the POST */
+ default:
+ break;
+ }
+
+ /*
+ * FIXME: UNIMPLEMENTED!
+ * Check the word at 0040h:0072h (Bda->SoftReset) and do one of the
+ * following actions:
+ * - if the word is 0000h, perform a cold reboot (aka. Reset). Everything gets initialized.
+ * - if the word is 1234h, perform a warm reboot (aka. Ctrl-Alt-Del). Some stuff is skipped.
+ */
+ switch (Bda->SoftReset)
+ {
+ case 0x0000:
+ {
+ if (!FirstBoot)
+ {
+ DisplayMessage(L"NTVDM is performing a COLD reboot! The program you are currently testing does not seem to behave correctly! The VDM will shut down...");
+ EmulatorTerminate();
+ return;
+ }
+ break;
+ }
+
+ case 0x1234:
+ {
+ DisplayMessage(L"NTVDM is performing a WARM reboot! This is not supported at the moment. The VDM will shut down...");
+ EmulatorTerminate();
+ return;
+ }
+
+ default:
+ break;
+ }
+
+ FirstBoot = FALSE;
+
+ /* Initialize the BDA */
+ InitializeBiosData();
+
+ /* Initialize the User Data Area at 0050:XXXX */
+ RtlZeroMemory(SEG_OFF_TO_PTR(0x50, 0x0000), sizeof(USER_DATA_AREA));
+
+
+
+ //////// NOTE: This is more or less bios-specific ////////
+
+ /*
+ * Initialize IVT and hardware
+ */
+
+ // WriteUnProtectRom(...);
+
+ /* Register the BIOS 32-bit Interrupts */
+ InitializeBiosInt32();
+
+ /* Initialize platform hardware (PIC/PIT chips, ...) */
+ BiosHwSetup();
+
+ /* Initialize the Keyboard, Video and Mouse BIOS */
+ KbdBios32Post();
+ VidBiosPost();
+ MouseBios32Post();
+ DiskBios32Post();
+
+ // WriteProtectRom(...);
+
+ //////// End of more or less bios-specific section ///////
+
+
+
+ SearchAndInitRoms(&BiosContext);
+
+ /*
+ * End of the 32-bit POST portion. We then fall back into 16-bit where
+ * the rest of the POST code is executed, typically calling INT 19h
+ * to boot up the OS.
+ */
+
+Quit:
+ /* Enable interrupts */
+ setIF(1);
+}
+
+
+/* PUBLIC FUNCTIONS ***********************************************************/
+
+BOOLEAN Bios32Initialize(VOID)
+{
+ /*
+ * Initialize BIOS/Keyboard/Video ROM static data
+ */
+
+ /* System BIOS Copyright */
+ RtlCopyMemory(SEG_OFF_TO_PTR(BIOS_SEGMENT, 0xE000), BiosCopyright, sizeof(BiosCopyright)-1);
+
+ /* System BIOS Version */
+ RtlCopyMemory(SEG_OFF_TO_PTR(BIOS_SEGMENT, 0xE070), BiosVersion, sizeof(BiosVersion)-1);
+
+ /* System BIOS Date */
+ RtlCopyMemory(SEG_OFF_TO_PTR(BIOS_SEGMENT, 0xFFF5), BiosDate, sizeof(BiosDate)-1);
+
+ /* Bootstrap code */
+ RtlCopyMemory(SEG_OFF_TO_PTR(BIOS_SEGMENT, 0xE05B), PostCode , sizeof(PostCode ));
+ RtlCopyMemory(SEG_OFF_TO_PTR(BIOS_SEGMENT, 0xFFF0), Bootstrap, sizeof(Bootstrap));
+
+ /* BIOS ROM Information */
+ RtlCopyMemory(SEG_OFF_TO_PTR(BIOS_SEGMENT, 0xE6F5), &BiosConfigTable, sizeof(BiosConfigTable));
+
+ /* System BIOS Model (same as Bct->Model) */
+ *(PBYTE)(SEG_OFF_TO_PTR(BIOS_SEGMENT, 0xFFFE)) = BIOS_MODEL;
+
+ /* Initialize the Keyboard and Video BIOS */
+ if (!KbdBiosInitialize() || !VidBiosInitialize() || !MouseBiosInitialize() || !DiskBios32Initialize())
+ {
+ /* Stop the VDM */
+ EmulatorTerminate();
+ return FALSE;
+ }
+
+ /* Redefine our POST function */
+ RegisterBop(BOP_RESET, Bios32Post);
+
+ WriteProtectRom((PVOID)TO_LINEAR(BIOS_SEGMENT, 0x0000),
+ ROM_AREA_END - TO_LINEAR(BIOS_SEGMENT, 0x0000) + 1);
+
+ /* We are done */
+ return TRUE;
+}
+
+VOID Bios32Cleanup(VOID)
+{
+ DiskBios32Cleanup();
+ MouseBios32Cleanup();
+ VidBios32Cleanup();
+ KbdBiosCleanup();
+}
+
+/* EOF */
projects / reactos.git / blobdiff