/* PRIVATE VARIABLES **********************************************************/
-static PBIOS_DATA_AREA Bda;
+PBIOS_DATA_AREA Bda;
static BYTE BiosKeyboardMap[256];
static HANDLE BiosConsoleInput = INVALID_HANDLE_VALUE;
static HANDLE BiosConsoleOutput = INVALID_HANDLE_VALUE;
static CONSOLE_SCREEN_BUFFER_INFO BiosSavedBufferInfo;
+/*
+ * VGA Register Configurations for BIOS Video Modes
+ * The configurations come from DosBox.
+ */
static BYTE VideoMode_40x25_text[] =
{
/* Miscellaneous Register */
0x67,
/* Sequencer Registers */
- 0x03, 0x08, 0x03, 0x00, 0x02,
+ 0x00, 0x08, 0x03, 0x00, 0x07,
/* GC Registers */
0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x0E, 0x0F, 0xFF,
/* CRTC Registers */
- 0x2D, 0x27, 0x28, 0x90, 0x2B, 0xA0, 0xBF, 0x1F, 0x00, 0x4F, 0x0D, 0x0F,
+ 0x2D, 0x27, 0x28, 0x90, 0x2B, 0xA0, 0xBF, 0x1F, 0x00, 0x4F, 0x0D, 0x0E,
0x00, 0x00, 0x00, 0x00, 0x9C, 0x8E, 0x8F, 0x14, 0x1F, 0x96, 0xB9, 0xA3,
0xFF,
/* AC Registers */
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x14, 0x07, 0x38, 0x39, 0x3A, 0x3B,
- 0x3C, 0x3D, 0x3E, 0x3F, 0x0C, 0x01, 0x0F, 0x13, 0x00
+ 0x3C, 0x3D, 0x3E, 0x3F, 0x0C, 0x00, 0x0F, 0x08, 0x00
};
static BYTE VideoMode_80x25_text[] =
0x67,
/* Sequencer Registers */
- 0x03, 0x00, 0x03, 0x00, 0x02,
+ 0x00, 0x00, 0x03, 0x00, 0x07,
/* GC Registers */
0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x0E, 0x0F, 0xFF,
/* CRTC Registers */
- 0x5F, 0x4F, 0x50, 0x82, 0x55, 0x81, 0xBF, 0x1F, 0x00, 0x4F, 0x0D, 0x0F,
+ 0x5F, 0x4F, 0x50, 0x82, 0x55, 0x81, 0xBF, 0x1F, 0x00, 0x4F, 0x0D, 0x0E,
0x00, 0x00, 0x00, 0x00, 0x9C, 0x8E, 0x8F, 0x28, 0x1F, 0x96, 0xB9, 0xA3,
0xFF,
/* AC Registers */
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x14, 0x07, 0x38, 0x39, 0x3A, 0x3B,
- 0x3C, 0x3D, 0x3E, 0x3F, 0x0C, 0x01, 0x0F, 0x13, 0x00
+ 0x3C, 0x3D, 0x3E, 0x3F, 0x0C, 0x00, 0x0F, 0x08, 0x00
};
static BYTE VideoMode_320x200_4color[] =
0x63,
/* Sequencer Registers */
- 0x03, 0x09, 0x03, 0x00, 0x02,
+ 0x00, 0x09, 0x00, 0x00, 0x02,
/* GC Registers */
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x30, 0x0F, 0x0F, 0xFF,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 0x0F, 0x0F, 0xFF,
/* CRTC Registers */
0x2D, 0x27, 0x28, 0x90, 0x2B, 0x80, 0xBF, 0x1F, 0x00, 0xC1, 0x00, 0x00,
/* AC Registers */
0x00, 0x13, 0x15, 0x17, 0x02, 0x04, 0x06, 0x07, 0x10, 0x11, 0x12, 0x13,
- 0x14, 0x15, 0x16, 0x17, 0x01, 0x00, 0x03, 0x00, 0x00
+ 0x14, 0x15, 0x16, 0x17, 0x01, 0x00, 0x0F, 0x00, 0x00
+};
+
+static BYTE VideoMode_640x200_2color[] =
+{
+ /* Miscellaneous Register */
+ 0x63,
+
+ /* Sequencer Registers */
+ 0x00, 0x09, 0x0F, 0x00, 0x02,
+
+ /* GC Registers */
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0x0F, 0xFF,
+
+ /* CRTC Registers */
+ 0x5F, 0x4F, 0x50, 0x82, 0x54, 0x80, 0xBF, 0x1F, 0x00, 0xC1, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x9C, 0x8E, 0x8F, 0x28, 0x00, 0x96, 0xB9, 0xC2,
+ 0xFF,
+
+ /* AC Registers */
+ 0x00, 0x17, 0x17, 0x17, 0x17, 0x17, 0x17, 0x17, 0x17, 0x17, 0x17, 0x17,
+ 0x17, 0x17, 0x17, 0x17, 0x01, 0x00, 0x01, 0x00, 0x00
+};
+
+static BYTE VideoMode_320x200_16color[] =
+{
+ /* Miscellaneous Register */
+ 0x63,
+
+ /* Sequencer Registers */
+ 0x00, 0x09, 0x0F, 0x00, 0x02,
+
+ /* GC Registers */
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x05, 0x0F, 0xFF,
+
+ /* CRTC Registers */
+ 0x2D, 0x27, 0x28, 0x90, 0x2B, 0x80, 0xBF, 0x1F, 0x00, 0xC0, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x9C, 0x8E, 0x8F, 0x14, 0x00, 0x96, 0xB9, 0xE3,
+ 0xFF,
+
+ /* AC Registers */
+ 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x10, 0x11, 0x12, 0x13,
+ 0x14, 0x15, 0x16, 0x17, 0x01, 0x00, 0x0F, 0x00, 0x00
+};
+
+static BYTE VideoMode_640x200_16color[] =
+{
+ /* Miscellaneous Register */
+ 0x63,
+
+ /* Sequencer Registers */
+ 0x00, 0x01, 0x0F, 0x00, 0x02,
+
+ /* GC Registers */
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x05, 0x0F, 0xFF,
+
+ /* CRTC Registers */
+ 0x5F, 0x4F, 0x50, 0x82, 0x54, 0x80, 0xBF, 0x1F, 0x00, 0xC0, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x9C, 0x8E, 0x8F, 0x28, 0x00, 0x96, 0xB9, 0xE3,
+ 0xFF,
+
+ /* AC Registers */
+ 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x10, 0x11, 0x12, 0x13,
+ 0x14, 0x15, 0x16, 0x17, 0x01, 0x00, 0x0F, 0x00, 0x00
+};
+
+static BYTE VideoMode_640x350_16color[] =
+{
+ /* Miscellaneous Register */
+ 0xA3,
+
+ /* Sequencer Registers */
+ 0x00, 0x01, 0x0F, 0x00, 0x02,
+
+ /* GC Registers */
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x05, 0x0F, 0xFF,
+
+ /* CRTC Registers */
+ 0x5F, 0x4F, 0x50, 0x82, 0x54, 0x80, 0xBF, 0x1F, 0x00, 0x40, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0x83, 0x85, 0x5D, 0x28, 0x0F, 0x63, 0xBA, 0xE3,
+ 0xFF,
+
+ /* AC Registers */
+ 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x14, 0x07, 0x38, 0x39, 0x3A, 0x3B,
+ 0x3C, 0x3D, 0x3E, 0x3F, 0x01, 0x00, 0x0F, 0x00, 0x00
+};
+
+static BYTE VideoMode_640x480_2color[] =
+{
+ /* Miscellaneous Register */
+ 0xE3,
+
+ /* Sequencer Registers */
+ 0x00, 0x01, 0x0F, 0x00, 0x02,
+
+ /* GC Registers */
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x05, 0x0F, 0xFF,
+
+ /* CRTC Registers */
+ 0x5F, 0x4F, 0x50, 0x82, 0x54, 0x80, 0x0B, 0x3E, 0x00, 0x40, 0x00, 0x00,
+ 0x00, 0x00, 0x00, 0x00, 0xEA, 0x8C, 0xDF, 0x28, 0x00, 0xE7, 0x04, 0xC3,
+ 0xFF,
+
+ /* AC Registers */
+ 0x00, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F, 0x3F,
+ 0x3F, 0x3F, 0x3F, 0x3F, 0x01, 0x00, 0x0F, 0x00, 0x00
};
static BYTE VideoMode_640x480_16color[] =
0xE3,
/* Sequencer Registers */
- 0x03, 0x01, 0x08, 0x00, 0x06,
+ 0x00, 0x01, 0x0F, 0x00, 0x02,
/* GC Registers */
- 0x00, 0x00, 0x00, 0x00, 0x03, 0x00, 0x05, 0x0F, 0xFF,
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x05, 0x0F, 0xFF,
/* CRTC Registers */
0x5F, 0x4F, 0x50, 0x82, 0x54, 0x80, 0x0B, 0x3E, 0x00, 0x40, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0xEA, 0x0C, 0xDF, 0x28, 0x00, 0xE7, 0x04, 0xE3,
+ 0x00, 0x00, 0x00, 0x00, 0xEA, 0x8C, 0xDF, 0x28, 0x00, 0xE7, 0x04, 0xE3,
0xFF,
/* AC Registers */
0x63,
/* Sequencer Registers */
- 0x03, 0x01, 0x0F, 0x00, 0x0E,
+ 0x00, 0x01, 0x0F, 0x00, 0x0E,
/* GC Registers */
0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x05, 0x0F, 0xFF,
/* CRTC Registers */
0x5F, 0x4F, 0x50, 0x82, 0x54, 0x80, 0xBF, 0x1F, 0x00, 0x41, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x9C, 0x0E, 0x8F, 0x28, 0x40, 0x96, 0xB9, 0xA3,
+ 0x00, 0x00, 0x00, 0x00, 0x9C, 0x8E, 0x8F, 0x28, 0x40, 0x96, 0xB9, 0xA3,
0xFF,
/* AC Registers */
VideoMode_80x25_text, /* Mode 03h */
VideoMode_320x200_4color, /* Mode 04h */
VideoMode_320x200_4color, /* Mode 05h */
- NULL, /* Mode 06h */
+ VideoMode_640x200_2color, /* Mode 06h */
NULL, /* Mode 07h */
NULL, /* Mode 08h */
NULL, /* Mode 09h */
NULL, /* Mode 0Ah */
NULL, /* Mode 0Bh */
NULL, /* Mode 0Ch */
- NULL, /* Mode 0Dh */
- NULL, /* Mode 0Eh */
+ VideoMode_320x200_16color, /* Mode 0Dh */
+ VideoMode_640x200_16color, /* Mode 0Eh */
NULL, /* Mode 0Fh */
- NULL, /* Mode 10h */
- NULL, /* Mode 11h */
+ VideoMode_640x350_16color, /* Mode 10h */
+ VideoMode_640x480_2color, /* Mode 11h */
VideoMode_640x480_16color, /* Mode 12h */
VideoMode_320x200_256color, /* Mode 13h */
};
{
Character = Buffer[Counter++];
- /* Read from video memory */
+ /* Write to video memory */
VgaWriteMemory(VideoAddress + (i * Bda->ScreenColumns + j) * sizeof(WORD),
(LPVOID)&Character,
sizeof(WORD));
/* Update the values in the BDA */
Bda->VideoMode = ModeNumber;
Bda->VideoPage = 0;
- Bda->VideoPageSize = BIOS_PAGE_SIZE;
+ Bda->VideoPageSize = BIOS_PAGE_SIZE;
Bda->VideoPageOffset = 0;
- Bda->CharacterHeight = 16;
+
+ /* Get the character height */
+ VgaWritePort(VGA_CRTC_INDEX, VGA_CRTC_MAX_SCAN_LINE_REG);
+ Bda->CharacterHeight = 1 + (VgaReadPort(VGA_CRTC_DATA) & 0x1F);
Resolution = VgaGetDisplayResolution();
Bda->ScreenColumns = Resolution.X;
BOOLEAN BiosSetVideoPage(BYTE PageNumber)
{
+ /* Check if the page exists */
if (PageNumber >= BIOS_MAX_PAGES) return FALSE;
+ /* Check if this is the same page */
+ if (PageNumber == Bda->VideoPage) return TRUE;
+
/* Set the values in the BDA */
Bda->VideoPage = PageNumber;
Bda->VideoPageSize = BIOS_PAGE_SIZE;
}
/* Initialize VGA */
- VgaInitialize(BiosConsoleOutput);
+ if (!VgaInitialize(BiosConsoleOutput))
+ {
+ CloseHandle(BiosConsoleOutput);
+ CloseHandle(BiosConsoleInput);
+ return FALSE;
+ }
/* Update the cursor position */
- BiosSetCursorPosition(BiosSavedBufferInfo.dwCursorPosition.X,
- BiosSavedBufferInfo.dwCursorPosition.Y,
+ BiosSetCursorPosition(BiosSavedBufferInfo.dwCursorPosition.Y,
+ BiosSavedBufferInfo.dwCursorPosition.X,
0);
/* Set the console input mode */
Row = HIBYTE(Bda->CursorPosition[Page]);
Column = LOBYTE(Bda->CursorPosition[Page]);
- /* Write the character */
- VgaWriteMemory(TO_LINEAR(TEXT_VIDEO_SEG,
- (Row * Bda->ScreenColumns + Column) * sizeof(WORD)),
- (LPVOID)&CharData,
- sizeof(WORD));
+ if (Character == '\a')
+ {
+ /* Bell control character */
+ // NOTE: We may use what the terminal emulator offers to us...
+ Beep(800, 200);
+ return;
+ }
+ else if (Character == '\b')
+ {
+ /* Backspace control character */
+ if (Column > 0)
+ {
+ Column--;
+ }
+ else if (Row > 0)
+ {
+ Column = Bda->ScreenColumns - 1;
+ Row--;
+ }
- /* Advance the cursor */
- Column++;
+ /* Erase the existing character */
+ CharData = (Attribute << 8) | ' ';
+ VgaWriteMemory(TO_LINEAR(TEXT_VIDEO_SEG,
+ Page * Bda->VideoPageSize
+ + (Row * Bda->ScreenColumns + Column) * sizeof(WORD)),
+ (LPVOID)&CharData,
+ sizeof(WORD));
+ }
+ else if (Character == '\n')
+ {
+ /* Line Feed control character */
+ Row++;
+ }
+ else if (Character == '\r')
+ {
+ /* Carriage Return control character */
+ Column = 0;
+ }
+ else
+ {
+ /* Default character */
+
+ /* Write the character */
+ VgaWriteMemory(TO_LINEAR(TEXT_VIDEO_SEG,
+ Page * Bda->VideoPageSize
+ + (Row * Bda->ScreenColumns + Column) * sizeof(WORD)),
+ (LPVOID)&CharData,
+ sizeof(WORD));
+
+ /* Advance the cursor */
+ Column++;
+ }
/* Check if it passed the end of the row */
- if (Column == Bda->ScreenColumns)
+ if (Column >= Bda->ScreenColumns)
{
- /* Return to the first column */
+ /* Return to the first column and go to the next line */
Column = 0;
+ Row++;
+ }
- if (Row == Bda->ScreenRows)
- {
- /* The screen must be scrolled */
- SMALL_RECT Rectangle = { 0, 0, Bda->ScreenColumns - 1, Bda->ScreenRows };
-
- BiosScrollWindow(SCROLL_DIRECTION_UP,
- 1,
- Rectangle,
- Page,
- DEFAULT_ATTRIBUTE);
- }
- else Row++;
+ /* Scroll the screen up if needed */
+ if (Row > Bda->ScreenRows)
+ {
+ /* The screen must be scrolled up */
+ SMALL_RECT Rectangle = { 0, 0, Bda->ScreenColumns - 1, Bda->ScreenRows };
+
+ BiosScrollWindow(SCROLL_DIRECTION_UP,
+ 1,
+ Rectangle,
+ Page,
+ DEFAULT_ATTRIBUTE);
}
/* Set the cursor position */
case 0x00:
{
BiosSetVideoMode(LOBYTE(Eax));
+ VgaClearMemory();
break;
}
break;
}
+ /* Query Light Pen */
+ case 0x04:
+ {
+ /*
+ * On modern BIOSes, this function returns 0
+ * so that we can ignore the other registers.
+ */
+ EmulatorSetRegister(EMULATOR_REG_AX, 0);
+ break;
+ }
+
/* Select Active Display Page */
case 0x05:
{
- /* Check if the page exists */
- if (LOBYTE(Eax) >= BIOS_MAX_PAGES) break;
-
- /* Check if this is the same page */
- if (LOBYTE(Eax) == Bda->VideoPage) break;
-
- /* Change the video page */
BiosSetVideoPage(LOBYTE(Eax));
-
break;
}
};
/* Call the internal function */
- BiosScrollWindow((HIBYTE(Eax)== 0x06)
- ? SCROLL_DIRECTION_UP : SCROLL_DIRECTION_DOWN,
+ BiosScrollWindow((HIBYTE(Eax) == 0x06) ? SCROLL_DIRECTION_UP
+ : SCROLL_DIRECTION_DOWN,
LOBYTE(Eax),
Rectangle,
Bda->VideoPage,
break;
}
+ /* Display combination code */
+ case 0x1A:
+ {
+ switch(LOBYTE(Eax))
+ {
+ case 0x00: /* Get Display combiantion code */
+ EmulatorSetRegister(EMULATOR_REG_AX, MAKEWORD(0x1A, 0x1A));
+ EmulatorSetRegister(EMULATOR_REG_BX, MAKEWORD(0x08, 0x0)); /* VGA w/ color analog display */
+ break;
+ case 0x01: /* Set Display combination code */
+ DPRINT1("Set Display combination code - Unsupported\n");
+ break;
+ default:
+ break;
+ }
+ break;
+ }
+
default:
{
DPRINT1("BIOS Function INT 10h, AH = 0x%02X NOT IMPLEMENTED\n",
projects / reactos.git / blobdiff