static HANDLE BiosConsoleInput = INVALID_HANDLE_VALUE;
static HANDLE BiosConsoleOutput = INVALID_HANDLE_VALUE;
static CONSOLE_SCREEN_BUFFER_INFO BiosSavedBufferInfo;
+static HANDLE InputThread = NULL;
/*
* VGA Register Configurations for BIOS Video Modes
VgaWritePort(VGA_AC_WRITE, *(Values++));
}
+ /* Reset the palette */
+ VgaResetPalette();
+
/* Update the values in the BDA */
Bda->VideoMode = ModeNumber;
Bda->VideoPage = 0;
/* Initialize the BDA */
Bda = (PBIOS_DATA_AREA)SEG_OFF_TO_PTR(BDA_SEGMENT, 0);
Bda->EquipmentList = BIOS_EQUIPMENT_LIST;
+ /*
+ * Conventional memory size is 640 kB,
+ * see: http://webpages.charter.net/danrollins/techhelp/0184.HTM
+ * and see Ralf Brown: http://www.ctyme.com/intr/rb-0598.htm
+ * for more information.
+ */
+ Bda->MemorySize = 0x0280;
Bda->KeybdBufferStart = FIELD_OFFSET(BIOS_DATA_AREA, KeybdBuffer);
Bda->KeybdBufferEnd = Bda->KeybdBufferStart + BIOS_KBD_BUFFER_SIZE * sizeof(WORD);
/* Set the console input mode */
SetConsoleMode(BiosConsoleInput, ENABLE_MOUSE_INPUT | ENABLE_PROCESSED_INPUT);
+ /* Start the input thread */
+ InputThread = CreateThread(NULL, 0, &InputThreadProc, BiosConsoleInput, 0, NULL);
+
/* Initialize the PIC */
PicWriteCommand(PIC_MASTER_CMD, PIC_ICW1 | PIC_ICW1_ICW4);
PicWriteCommand(PIC_SLAVE_CMD , PIC_ICW1 | PIC_ICW1_ICW4);
/* Close the console handles */
if (BiosConsoleOutput != INVALID_HANDLE_VALUE) CloseHandle(BiosConsoleOutput);
if (BiosConsoleInput != INVALID_HANDLE_VALUE) CloseHandle(BiosConsoleInput);
+
+ /* Close the input thread handle */
+ if (InputThread != NULL) CloseHandle(InputThread);
}
WORD BiosPeekCharacter(VOID)
/* Default character */
/* Write the character */
- VgaWriteMemory(TO_LINEAR(TEXT_VIDEO_SEG,
- Page * Bda->VideoPageSize
- + (Row * Bda->ScreenColumns + Column) * sizeof(WORD)),
- (LPVOID)&CharData,
- sizeof(WORD));
+ EmulatorWriteMemory(&EmulatorContext,
+ TO_LINEAR(TEXT_VIDEO_SEG,
+ Page * Bda->VideoPageSize
+ + (Row * Bda->ScreenColumns + Column) * sizeof(WORD)),
+ (LPVOID)&CharData,
+ sizeof(WORD));
/* Advance the cursor */
Column++;
Rectangle,
Page,
DEFAULT_ATTRIBUTE);
+
+ Row--;
}
/* Set the cursor position */
break;
}
+ /* Palette Control */
+ case 0x10:
+ {
+ switch (getAL())
+ {
+ /* Set Single Palette Register */
+ case 0x00:
+ {
+ /* Reset the flip-flop */
+ VgaReadPort(VGA_STAT_COLOR);
+
+ /* Write the index */
+ VgaWritePort(VGA_AC_INDEX, getBL());
+
+ /* Write the data */
+ VgaWritePort(VGA_AC_WRITE, getBH());
+
+ break;
+ }
+
+ /* Set Overscan Color */
+ case 0x01:
+ {
+ /* Reset the flip-flop */
+ VgaReadPort(VGA_STAT_COLOR);
+
+ /* Write the index */
+ VgaWritePort(VGA_AC_INDEX, VGA_AC_OVERSCAN_REG);
+
+ /* Write the data */
+ VgaWritePort(VGA_AC_WRITE, getBH());
+
+ break;
+ }
+
+ /* Set All Palette Registers */
+ case 0x02:
+ {
+ INT i;
+ LPBYTE Buffer = SEG_OFF_TO_PTR(getES(), getDX());
+
+ /* Set the palette registers */
+ for (i = 0; i <= VGA_AC_PAL_F_REG; i++)
+ {
+ /* Reset the flip-flop */
+ VgaReadPort(VGA_STAT_COLOR);
+
+ /* Write the index */
+ VgaWritePort(VGA_AC_INDEX, i);
+
+ /* Write the data */
+ VgaWritePort(VGA_AC_WRITE, Buffer[i]);
+ }
+
+ /* Set the overscan register */
+ VgaWritePort(VGA_AC_INDEX, VGA_AC_OVERSCAN_REG);
+ VgaWritePort(VGA_AC_WRITE, Buffer[VGA_AC_PAL_F_REG + 1]);
+
+ break;
+ }
+
+ /* Get Single Palette Register */
+ case 0x07:
+ {
+ /* Reset the flip-flop */
+ VgaReadPort(VGA_STAT_COLOR);
+
+ /* Write the index */
+ VgaWritePort(VGA_AC_INDEX, getBL());
+
+ /* Read the data */
+ setBH(VgaReadPort(VGA_AC_READ));
+
+ break;
+ }
+
+ /* Get Overscan Color */
+ case 0x08:
+ {
+ /* Reset the flip-flop */
+ VgaReadPort(VGA_STAT_COLOR);
+
+ /* Write the index */
+ VgaWritePort(VGA_AC_INDEX, VGA_AC_OVERSCAN_REG);
+
+ /* Read the data */
+ setBH(VgaReadPort(VGA_AC_READ));
+
+ break;
+ }
+
+ /* Get All Palette Registers */
+ case 0x09:
+ {
+ INT i;
+ LPBYTE Buffer = SEG_OFF_TO_PTR(getES(), getDX());
+
+ /* Get the palette registers */
+ for (i = 0; i <= VGA_AC_PAL_F_REG; i++)
+ {
+ /* Reset the flip-flop */
+ VgaReadPort(VGA_STAT_COLOR);
+
+ /* Write the index */
+ VgaWritePort(VGA_AC_INDEX, i);
+
+ /* Read the data */
+ Buffer[i] = VgaReadPort(VGA_AC_READ);
+ }
+
+ /* Get the overscan register */
+ VgaWritePort(VGA_AC_INDEX, VGA_AC_OVERSCAN_REG);
+ Buffer[VGA_AC_PAL_F_REG + 1] = VgaReadPort(VGA_AC_READ);
+
+ break;
+ }
+
+ /* Set Individual DAC Register */
+ case 0x10:
+ {
+ /* Write the index */
+ // Certainly in BL and not in BX as said by Ralf Brown...
+ VgaWritePort(VGA_DAC_WRITE_INDEX, getBL());
+
+ /* Write the data in this order: Red, Green, Blue */
+ VgaWritePort(VGA_DAC_DATA, getDH());
+ VgaWritePort(VGA_DAC_DATA, getCH());
+ VgaWritePort(VGA_DAC_DATA, getCL());
+
+ break;
+ }
+
+ /* Set Block of DAC Registers */
+ case 0x12:
+ {
+ INT i;
+ LPBYTE Buffer = SEG_OFF_TO_PTR(getES(), getDX());
+
+ /* Write the index */
+ // Certainly in BL and not in BX as said by Ralf Brown...
+ VgaWritePort(VGA_DAC_WRITE_INDEX, getBL());
+
+ for (i = 0; i < getCX(); i++)
+ {
+ /* Write the data in this order: Red, Green, Blue */
+ VgaWritePort(VGA_DAC_DATA, *Buffer++);
+ VgaWritePort(VGA_DAC_DATA, *Buffer++);
+ VgaWritePort(VGA_DAC_DATA, *Buffer++);
+ }
+
+ break;
+ }
+
+ /* Get Individual DAC Register */
+ case 0x15:
+ {
+ /* Write the index */
+ VgaWritePort(VGA_DAC_READ_INDEX, getBL());
+
+ /* Read the data in this order: Red, Green, Blue */
+ setDH(VgaReadPort(VGA_DAC_DATA));
+ setCH(VgaReadPort(VGA_DAC_DATA));
+ setCL(VgaReadPort(VGA_DAC_DATA));
+
+ break;
+ }
+
+ /* Get Block of DAC Registers */
+ case 0x17:
+ {
+ INT i;
+ LPBYTE Buffer = SEG_OFF_TO_PTR(getES(), getDX());
+
+ /* Write the index */
+ // Certainly in BL and not in BX as said by Ralf Brown...
+ VgaWritePort(VGA_DAC_READ_INDEX, getBL());
+
+ for (i = 0; i < getCX(); i++)
+ {
+ /* Write the data in this order: Red, Green, Blue */
+ *Buffer++ = VgaReadPort(VGA_DAC_DATA);
+ *Buffer++ = VgaReadPort(VGA_DAC_DATA);
+ *Buffer++ = VgaReadPort(VGA_DAC_DATA);
+ }
+
+ break;
+ }
+
+ default:
+ {
+ DPRINT1("BIOS Palette Control Sub-command AL = 0x%02X NOT IMPLEMENTED\n",
+ getAL());
+ break;
+ }
+ }
+
+ break;
+ }
+
/* Scroll Window */
case 0x12:
{
setAX(Bda->EquipmentList);
}
+VOID BiosGetMemorySize(LPWORD Stack)
+{
+ /* Return the conventional memory size in kB, typically 640 kB */
+ setAX(Bda->MemorySize);
+}
+
VOID BiosHandleIrq(BYTE IrqNumber, LPWORD Stack)
{
switch (IrqNumber)
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