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[NTVDM]
- Update the CrtModeControl byte in the BDA when we change video modes. - Implement INT 10h, AX=1003h "Toggle Intensity/Blinking Bit". - Partially implement INT 10h, AH=1Bh "Functionality/State Information (VGA)". svn path=/trunk/; revision=67879
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Hermès Bélusca-Maïto
parent
d4a0828949
commit
578d9849a0
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@ -97,7 +97,8 @@ typedef struct
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WORD CharacterHeight; // 0x85
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BYTE VGAOptions; // 0x87
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BYTE VGASwitches; // 0x88
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BYTE VGAFlags[2]; // 0x89
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BYTE VGAFlags; // 0x89
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BYTE VGADccIDActive; // 0x8a
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DWORD Reserved3; // 0x8b
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BYTE Reserved4; // 0x8f
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BYTE Reserved5[2]; // 0x90
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@ -1942,6 +1942,8 @@ static CONST UCHAR Font8x16[VGA_FONT_CHARACTERS * 16] =
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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};
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PVGA_STATIC_FUNC_TABLE VgaStaticFuncTable;
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/* PRIVATE FUNCTIONS **********************************************************/
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static BOOLEAN VidBiosScrollWindow(SCROLL_DIRECTION Direction,
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@ -2127,7 +2129,14 @@ static BOOLEAN VgaSetRegisters(PVGA_REGISTERS Registers)
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Bda->CrtBasePort = (Registers->Misc & 0x01) ? VGA_CRTC_INDEX_COLOR
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: VGA_CRTC_INDEX_MONO;
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/* Bit 1 indicates whether display is color (0) or monochrome (1) */
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Bda->VGAOptions = (Bda->VGAOptions & 0xFD) | (!(Registers->Misc & 0x01) << 1);
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Bda->VGAOptions = (Bda->VGAOptions & 0xFD) | (!(Registers->Misc & 0x01) << 1);
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Bda->CrtModeControl = (Bda->CrtModeControl & 0xFB) | (!(Registers->Misc & 0x01) << 1);
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/* Update blink bit in BDA */
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if (Registers->Attribute[VGA_AC_CONTROL_REG] & VGA_AC_CONTROL_BLINK)
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Bda->CrtModeControl |= (1 << 5);
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else
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Bda->CrtModeControl &= ~(1 << 5);
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/* Turn the video off */
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IOWriteB(VGA_SEQ_INDEX, VGA_SEQ_CLOCK_REG);
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@ -2408,11 +2417,6 @@ static BOOLEAN VidBiosSetVideoMode(BYTE ModeNumber)
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/* Clear the VGA memory if needed */
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if (!DoNotClear) VgaClearMemory();
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// Bda->CrtModeControl;
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// Bda->CrtColorPaletteMask;
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// Bda->EGAFlags;
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// Bda->VGAFlags;
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/* Update the values in the BDA */
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Bda->VideoMode = ModeNumber;
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Bda->VideoPageSize = VideoModePageSize[ModeNumber];
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@ -2423,6 +2427,10 @@ static BOOLEAN VidBiosSetVideoMode(BYTE ModeNumber)
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Bda->VGAOptions = 0x60 | (Bda->VGAOptions & 0x7F) | (DoNotClear ? 0x80 : 0x00);
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Bda->VGASwitches = 0xF9; /* High-resolution */
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// Bda->VGAFlags;
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// Bda->CrtModeControl;
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// Bda->CrtColorPaletteMask;
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/* Set the start address in the CRTC */
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IOWriteB(VGA_CRTC_INDEX, VGA_CRTC_START_ADDR_LOW_REG);
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IOWriteB(VGA_CRTC_DATA , LOBYTE(Bda->VideoPageOffset));
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@ -2885,6 +2893,35 @@ VOID WINAPI VidBiosVideoService(LPWORD Stack)
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break;
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}
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/* Toggle Intensity/Blinking Bit */
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case 0x03:
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{
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/* Read the old AC mode control register value */
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BYTE VgaAcControlReg;
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IOWriteB(VGA_AC_INDEX, VGA_AC_CONTROL_REG);
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VgaAcControlReg = IOReadB(VGA_AC_READ);
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/* Toggle the blinking bit and write the new value */
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if (getBL())
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{
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VgaAcControlReg |= VGA_AC_CONTROL_BLINK;
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Bda->CrtModeControl |= (1 << 5);
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}
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else
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{
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VgaAcControlReg &= ~VGA_AC_CONTROL_BLINK;
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Bda->CrtModeControl &= ~(1 << 5);
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}
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IOWriteB(VGA_AC_INDEX, VGA_AC_CONTROL_REG);
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IOWriteB(VGA_AC_WRITE, VgaAcControlReg);
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/* Enable screen and disable palette access */
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IOReadB(VGA_INSTAT1_READ); // Put the AC register into index state
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IOWriteB(VGA_AC_INDEX, 0x20);
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break;
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}
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/* Get Single Palette Register */
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case 0x07:
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{
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@ -3223,18 +3260,73 @@ VOID WINAPI VidBiosVideoService(LPWORD Stack)
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switch (getAL())
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{
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case 0x00: /* Get Display combination code */
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setAX(MAKEWORD(0x1A, 0x1A));
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setBX(MAKEWORD(0x08, 0x00)); /* VGA w/ color analog display */
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break;
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{
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setBL(Bda->VGADccIDActive);
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setBH(0x00); // No alternate display
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/* Return success */
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setAL(0x1A);
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break;
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}
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case 0x01: /* Set Display combination code */
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DPRINT1("Set Display combination code - Unsupported\n");
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break;
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{
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DPRINT1("Set Display combination code - Unsupported\n");
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break;
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}
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default:
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break;
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break;
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}
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break;
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}
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/* Functionality/State Information (VGA) */
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case 0x1B:
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{
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PVGA_DYNAMIC_FUNC_TABLE Table = SEG_OFF_TO_PTR(getES(), getDI());
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/* Check for only supported subfunction */
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if (getBX() != 0x0000)
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{
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DPRINT1("INT 10h, AH=1Bh, unsupported subfunction 0x%04x\n", getBX());
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break;
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}
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/* Fill the VGA dynamic functionality table with our information */
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Table->StaticFuncTablePtr = MAKELONG(VIDEO_STATE_INFO_OFFSET, VIDEO_BIOS_DATA_SEG);
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Table->VideoMode = Bda->VideoMode;
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Table->ScreenColumns = Bda->ScreenColumns;
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Table->VideoPageSize = Bda->VideoPageSize;
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Table->VideoPageOffset = Bda->VideoPageOffset;
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RtlCopyMemory(Table->CursorPosition, Bda->CursorPosition, sizeof(Bda->CursorPosition));
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Table->CursorEndLine = Bda->CursorEndLine;
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Table->CursorStartLine = Bda->CursorStartLine;
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Table->VideoPage = Bda->VideoPage;
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Table->CrtBasePort = Bda->CrtBasePort;
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Table->CrtModeControl = Bda->CrtModeControl;
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Table->CrtColorPaletteMask = Bda->CrtColorPaletteMask;
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Table->ScreenRows = Bda->ScreenRows;
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Table->CharacterHeight = Bda->CharacterHeight;
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Table->VGADccIDActive = Bda->VGADccIDActive;
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Table->VGADccIDAlternate = 0x00; // No alternate display
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// Table->CurrModeSupportedColorsNum;
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// Table->CurrModeSupportedPagesNum;
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// Table->Scanlines;
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// Table->PrimaryCharTable;
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// Table->SecondaryCharTable;
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// Table->VGAFlags;
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Table->VGAAvailMemory = (Bda->VGAOptions & 0x60) >> 5;
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// Table->VGASavePtrStateFlags;
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// Table->VGADispInfo;
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UNIMPLEMENTED;
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/* Return success */
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setAL(0x1B);
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break;
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}
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default:
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{
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DPRINT1("BIOS Function INT 10h, AH = 0x%02X, AL = 0x%02X, BH = 0x%02X NOT IMPLEMENTED\n",
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@ -3287,7 +3379,19 @@ BOOLEAN VidBiosInitialize(VOID)
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((PULONG)BaseAddress)[0x42] = (ULONG)NULL; // Relocated Default INT 10h Video Services
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((PULONG)BaseAddress)[0x6D] = (ULONG)NULL; // Video BIOS Entry Point
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/* Fill the tables */
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/* Initialize the VGA static function table */
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VgaStaticFuncTable = SEG_OFF_TO_PTR(VIDEO_BIOS_DATA_SEG, VIDEO_STATE_INFO_OFFSET);
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RtlZeroMemory(VgaStaticFuncTable, sizeof(*VgaStaticFuncTable));
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VgaStaticFuncTable->SupportedModes[0] = 0xFF; // Modes 0x00 to 0x07 supported
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VgaStaticFuncTable->SupportedModes[1] = 0xFF; // Modes 0x08 to 0x0F supported
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VgaStaticFuncTable->SupportedModes[2] = 0x0F; // Modes 0x10 to 0x13 supported
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VgaStaticFuncTable->SupportedScanlines = 0x07; // Scanlines 200, 350 and 400 supported
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VgaStaticFuncTable->TextCharBlocksNumber = 0;
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VgaStaticFuncTable->MaxActiveTextCharBlocksNumber = 0;
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VgaStaticFuncTable->VGAFuncSupportFlags = 0x0CFD; // See: http://www.ctyme.com/intr/rb-0221.htm#Table46
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VgaStaticFuncTable->VGASavePtrFuncFlags = 0x18; // See: http://www.ctyme.com/intr/rb-0221.htm#Table47
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/* Fill the font tables */
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RtlMoveMemory(SEG_OFF_TO_PTR(VIDEO_BIOS_DATA_SEG, FONT_8x8_OFFSET),
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Font8x8, sizeof(Font8x8));
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RtlMoveMemory(SEG_OFF_TO_PTR(VIDEO_BIOS_DATA_SEG, FONT_8x16_OFFSET),
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@ -3307,6 +3411,10 @@ BOOLEAN VidBiosInitialize(VOID)
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// (that should be done here, or maybe in VGA ??)
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//
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Bda->CrtModeControl = 0x00;
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Bda->CrtColorPaletteMask = 0x00;
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Bda->VGADccIDActive = 0x08; // VGA w/ color analog active display
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/* Set the default video mode */
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VidBiosSetVideoMode(BIOS_DEFAULT_VIDEO_MODE);
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@ -29,6 +29,8 @@
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#define FONT_8x16_OFFSET 0x0800
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#define FONT_8x14_OFFSET 0x1800
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#define VIDEO_STATE_INFO_OFFSET 0x3000 // == 0x1800 + (sizeof(Font8x14) == 0x0E00) + 0x0A00 for padding
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typedef enum
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{
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SCROLL_UP,
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@ -37,6 +39,65 @@ typedef enum
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SCROLL_RIGHT
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} SCROLL_DIRECTION;
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#pragma pack(push, 1)
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typedef struct _VGA_STATIC_FUNC_TABLE
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{
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BYTE SupportedModes[3]; // 0x00
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DWORD Reserved0; // 0x03
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BYTE SupportedScanlines; // 0x07
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BYTE TextCharBlocksNumber; // 0x08
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BYTE MaxActiveTextCharBlocksNumber; // 0x09
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WORD VGAFuncSupportFlags; // 0x0a
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WORD Reserved1; // 0x0c
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BYTE VGASavePtrFuncFlags; // 0x0e
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BYTE Reserved2; // 0x0f
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} VGA_STATIC_FUNC_TABLE, *PVGA_STATIC_FUNC_TABLE;
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typedef struct _VGA_DYNAMIC_FUNC_TABLE
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{
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DWORD StaticFuncTablePtr; // 0x00
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/*
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* The following fields follow the same order as in the BDA,
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* from offset 0x49 up to offset 0x66...
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*/
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BYTE VideoMode; // 0x04
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WORD ScreenColumns; // 0x05
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WORD VideoPageSize; // 0x07
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WORD VideoPageOffset; // 0x09
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WORD CursorPosition[BIOS_MAX_PAGES]; // 0x0b
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BYTE CursorEndLine; // 0x1b
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BYTE CursorStartLine; // 0x1c
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BYTE VideoPage; // 0x1d
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WORD CrtBasePort; // 0x1e
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BYTE CrtModeControl; // 0x20
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BYTE CrtColorPaletteMask; // 0x21
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/* ... and offsets 0x84 and 0x85. */
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BYTE ScreenRows; // 0x22
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WORD CharacterHeight; // 0x23
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BYTE VGADccIDActive; // 0x25
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BYTE VGADccIDAlternate; // 0x26
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WORD CurrModeSupportedColorsNum; // 0x27
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BYTE CurrModeSupportedPagesNum; // 0x29
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BYTE Scanlines; // 0x2a
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BYTE PrimaryCharTable; // 0x2b
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BYTE SecondaryCharTable; // 0x2c
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/* Contains part of information from BDA::VGAFlags (offset 0x89) */
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BYTE VGAFlags; // 0x2d
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BYTE Reserved0[3]; // 0x2e
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BYTE VGAAvailMemory; // 0x31
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BYTE VGASavePtrStateFlags; // 0x32
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BYTE VGADispInfo; // 0x33
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BYTE Reserved1[12]; // 0x34 - 0x40
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} VGA_DYNAMIC_FUNC_TABLE, *PVGA_DYNAMIC_FUNC_TABLE;
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#pragma pack(pop)
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/* FUNCTIONS ******************************************************************/
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VOID VidBiosSyncCursorPosition(VOID);
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