private void SetPaletteEntry(byte index, uint RGB)
{
dacAddressWritePort.Write8(index);
dacDataRegPort.Write8((byte)(RGB & 0xff));
dacDataRegPort.Write8((byte)((RGB >> 8) & 0xff));
dacDataRegPort.Write8((byte)((RGB >> 16) & 0xff));
}
public byte Initialize(byte baseVector)
{
DebugStub.Print("Pic.Initializing IRQs at interrupt {0:x2}\n",
__arglist(baseVector));
this.baseVector = baseVector;
irqMask = unchecked ((ushort)~PIC_I_PIC1);
// Set ICW1 (must be followed by ICW2, ICW3, and ICW4).
// 00010001b - 8-byte,cascaded,triggered,w/ICW4
pic1CtrlPort.Write8(0x11);
pic0CtrlPort.Write8(0x11);
// Set ICW2..ICW3 (must follow ICW1)
pic1MaskPort.Write8((byte)(baseVector + 8));
pic0MaskPort.Write8(baseVector);
pic1MaskPort.Write8(0x02); // Cascaded interrupt number
pic0MaskPort.Write8(0x04); // Cascaded interrupt bit.
pic1MaskPort.Write8(1); // End of Interrupt
pic0MaskPort.Write8(1);
pic1CtrlPort.Write8(0x20); // EOI
pic0CtrlPort.Write8(0x20); // EOI
MaskAll();
return(PIC_VECTORS);
}
private void AtcOut(IoPort port, byte[] values)
{
for (byte i = 0; i < values.Length; i++) {
port.Write8(i);
port.Write8(values[i]);
}
}
internal void Stop()
{
// Half-program counter to stop counter running. Trick copied
// from MMOSA i386 timer code
CWPort.Write8(i8254_CW_MODE0 | i8254_CW_BOTH | i8254_CW_SEL0);
C0Port.Write8((byte)(0)); // LSB
// C0Port.Write8((byte)(0)); MSB DON'T!
}
internal void Start(ushort pitTicks)
{
CWPort.Write8(i8254_CW_MODE2 | i8254_CW_BOTH | i8254_CW_SEL2);
C2Port.Write8((byte)(pitTicks & 0xff));
C2Port.Write8((byte)(pitTicks >> 8));
do
{
CWPort.Write8(i8254_RB_NOCOUNT | i8254_RB_SEL2);
} while ((C2Port.Read8() & i8254_RB_NULL) == i8254_RB_NULL);
}
public int Arm(IdeRequest !ideRequest)
{
byte value = BUSMASTER_CONTROL_MASK_START;
if (ideRequest.Command == IdeCmdType.Read)
{
value |= BUSMASTER_CONTROL_MASK_WRITE;
}
commandPort.Write8(value); // enable BM
return(0);
} // BmArm
// Constructor
internal Timer8254LegacyPC(PnpConfig config, Pic pic)
{
#if VERBOSE
Tracing.Log(Tracing.Debug, "Timer8254: create");
#endif
// /pnp/08/02/01/PNP0100 0003 cfg dis : ISA 8254 Timer : AT Timer
// IRQ mask=0001 type=47
// I/O Port inf=01 min=0040 max=0040 aln=01 len=04 0040..0043
this.config = config;
this.pic = pic;
this.irq = ((IoIrqRange)config.DynamicRanges[1]).Irq;
IoPortRange ioPorts = (IoPortRange)config.DynamicRanges[0];
C0Port = ioPorts.PortAtOffset(i8254_C0, 1, Access.ReadWrite);
C2Port = ioPorts.PortAtOffset(i8254_C2, 1, Access.ReadWrite);
CWPort = ioPorts.PortAtOffset(i8254_CW, 1, Access.ReadWrite);
// Enable Timer2
// Lower 2 bits of port 61 are described in:
// The Indispensable PC Hardware Book (3rd Edition) p.724
ioPorts = (IoPortRange)config.FixedRanges[0];
IoPort p = ioPorts.PortAtOffset(0, 1, Access.ReadWrite);
//
// Also clear the NMI RAM parity error to enable the PCI card
// to generate NMI if the button is depressed
//
p.Write8((byte)((p.Read8() & 0xf8) | 0x01));
}
public void Write8(AcpiObject.RegionSpace regionSpace, ulong offset, byte value)
{
#if DUMP_RAW_READ_WRITES
DebugStub.WriteLine("ACPI write: space: " + regionSpace + ", offset: " + offset + ", bytes: " + 1 + ", value: " + value.ToString("X"));
#endif
switch (regionSpace)
{
case AcpiObject.RegionSpace.SystemMemory:
IoMemory region = IoMemory.MapPhysicalMemory(offset, 1, true /*readable*/, true /*writable*/);
region.Write8(0, value);
break;
case AcpiObject.RegionSpace.SystemIO:
IoPort port = new IoPort((ushort)offset, 1, Access.ReadWrite);
port.Write8(value);
break;
case AcpiObject.RegionSpace.PCI_Config:
pciConfigAddressPort.Write32(PciConfigEnableMask | (uint)offset);
pciConfigDataPort.Write8(value);
break;
default:
throw new Exception("Unimplemented operation region type" + regionSpace);
}
}
// Constructor
internal Timer8254Apic(PnpConfig config)
{
// /pnp/08/02/01/PNP0100 0003 cfg dis : ISA 8254 Timer : AT Timer
// IRQ mask=0001 type=47
// I/O Port inf=01 min=0040 max=0040 aln=01 len=04 0040..0043
this.config = config;
this.irq = ((IoIrqRange)config.DynamicRanges[1]).Irq;
IoPortRange ioPorts = (IoPortRange)config.DynamicRanges[0];
C2Port = ioPorts.PortAtOffset(i8254_C2, 1, Access.ReadWrite);
CWPort = ioPorts.PortAtOffset(i8254_CW, 1, Access.ReadWrite);
// Use Timer2 as it's not connected as interrupt source.
//
// Lower 2 bits of port 61 are described in:
// The Indispensable PC Hardware Book (3rd Edition) p.724
ioPorts = (IoPortRange)config.FixedRanges[0];
IoPort p = ioPorts.PortAtOffset(0, 1, Access.ReadWrite);
//
// Also clear the NMI RAM parity error to enable the PCI card
// to generate NMI if the button is depressed
//
p.Write8((byte)((p.Read8() & 0xf8) | 0x01));
}
public void BmPrepareController(IdeRequest !ideRequest)
{
// Perform steps 1 and 2 above: set up PRD, clear
// error snd interrupt
// Init. Scatter Gather List Register
uint thePrd = FillPrdTable(ideRequest);
prdPort.Write32(thePrd);
// Clear Errors
byte status = (byte)(BUSMASTER_STATUS_MASK_INTERRUPT | BUSMASTER_STATUS_MASK_ERROR);
statusPort.Write8(status);
return;
} // BmPrepareController
internal void Initialize(byte baseVector)
{
DebugStub.Assert(255 - baseVector >= 48);
this.baseVector = baseVector;
Write(ApicOffset.LvtTimer, LvtFlags.Masked);
Write(ApicOffset.LvtThermalSensor, LvtFlags.Masked);
Write(ApicOffset.LvtPerfCounts, LvtFlags.Masked);
Write(ApicOffset.LvtError, LvtFlags.Masked);
Write(ApicOffset.SpuriousIntVector, 0xdfu);
// set task priority to 0 so that it can
// receive all interrupts from IPI
// Write(ApicOffset.TaskPriority, 0x20u);
Write(ApicOffset.TaskPriority, 0);
Write(ApicOffset.LvtLint0, LvtFlags.Masked);
Write(ApicOffset.LvtLint1, LvtFlags.Masked);
SetId((byte)Processor.GetCurrentProcessorId());
if (this.IsBsp)
{
InitializeRouteableEntries();
InitializeMpResourceEntries();
}
// Enable in s/w
SetEnabled(true);
// Enable in h/w
Isa.WriteMsr(ApicMSR, Isa.ReadMsr(ApicMSR) | (1 << 11));
// Watch out for the uniprocessor case where the
// FloatingPointer may be null.
MpFloatingPointer floatingPointer = MpResources.FloatingPointer;
if (floatingPointer != null && floatingPointer.ImcrPresent && this.IsBsp)
{
IoPort addrPort = new IoPort(ImcrAddressPort, 1, Access.Write);
IoPort dataPort = new IoPort(ImcrDataPort, 1, Access.Write);
addrPort.Write8(ImcrAddressSelect);
dataPort.Write8(ImcrDataApic);
}
Write(ApicOffset.LvtLint0, LvtFlags.Level | LvtFlags.ExtInt);
Write(ApicOffset.LvtLint1, LvtFlags.NMI | 0x02);
for (int z = 0; z <= maxIrq; z++)
{
byte m = IrqToInterrupt((byte)z);
byte n = InterruptToIrq(m);
DebugStub.Assert((byte)z == n);
}
}
public byte Initialize(byte baseVector)
{
this.baseVector = baseVector;
// Set ICW1 (must be followed by ICW2, ICW3, and ICW4).
// 00010001b - 8-byte,cascaded,triggered,w/ICW4
pic1CtrlPort.Write8(0x11);
pic0CtrlPort.Write8(0x11);
// ICW2
pic1MaskPort.Write8((byte)(baseVector + 8));
pic0MaskPort.Write8(baseVector);
// ICW3
pic1MaskPort.Write8(0x02); // Cascaded interrupt number
pic0MaskPort.Write8(0x04); // Cascaded interrupt bit.
// ICW4
pic1MaskPort.Write8(1);
pic0MaskPort.Write8(1);
// OCW2 - EOI
pic1CtrlPort.Write8(0x20);
pic0CtrlPort.Write8(0x20);
MaskAll();
DumpRegisters();
pic1CtrlPort.Write8(0x20);
pic0CtrlPort.Write8(0x20);
MaskAll();
DumpRegisters();
MaskAll();
// OCW2 - EOI
pic1CtrlPort.Write8(0x20);
pic0CtrlPort.Write8(0x20);
return(PIC_VECTORS);
}
//
private void VgaTextMode()
{
// start sync reset program up sequencer
IndxOut(seqAddrPort, new byte[] { 0x01,0x00,0x03,0x00,0x02 } );
miscOutputRegWritePort.Write8(0x67);
graphAddrPort.Write16(0x0e06);
// EndSyncResetCmd
seqAddrPort.Write16(0x0300);
// Unlock the CTC registers.
crtcAddressColorPort.Write16(0x0E11);
// program crtc registers
IndxOut(crtcAddressColorPort, new byte[] { 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 } );
// prepare atc for writing
inputStatusColorPort.Read8();
AtcOut(atcAddrPort, new byte[] { 0x00,0x01,0x02,0x03,0x04,0x05,0x14,0x07,
0x38,0x39,0x3a,0x3b,0x3c,0x3d,0x3e,0x3f,
0x04,0x00,0x0F,0x08,0x00 } );
// program graphics controller registers
IndxOut(graphAddrPort, new byte[] { 0x00,0x00,0x00,0x00,0x00,0x10,0x0e,0x00,0xff});
// DAC mask registers
dacPixelMaskPort.Write8(0xFF);
// prepare atc for writing
inputStatusColorPort.Read8();
// turn video on.
atcAddrPort.Write8(VIDEO_ENABLE);
}
internal void Timer2Start()
{
CWPort.Write8(i8254_CW_MODE2 | i8254_CW_BOTH | i8254_CW_SEL2);
C2Port.Write8((byte)0xff);
C2Port.Write8((byte)0xff);
}
private void BitBlt4(int x, int y, int width, int height,
byte[] buffer, int offset, int ScanWidth)
{
byte[] Plane = new byte [81];
bool bRightEdge = false;
bool bCenterSection = false;
byte lMask = lMaskTable[x % 8];
byte rMask = rMaskTable[(x + width - 1) % 8];
int bank1 = x / 8;
int bank2 = (x + width - 1) / 8;
int count = bank2 - bank1;
if (bank1 == bank2) {
lMask &= rMask;
}
if (count != 0) {
bRightEdge = true;
count--;
if (count != 0) {
bCenterSection = true;
}
}
int pDst = (y * DELTA) + (x / 8);
int pSrc = offset;
ReadWriteMode(READ_MODE_0 | WRITE_MODE_0);
for (uint j = 0; j < height; j++) {
for (byte plane = 1; plane < 16; plane <<= 1) {
int pSrcTemp = pSrc;
int pDstTemp = pDst;
//
// Convert the packed bitmap data into planar data
// for this plane.
//
int bank = bank1;
Plane[bank] = 0;
byte Mask = PixelMask[x % 8];
uint toggle = 0;
for (uint i = 0; i < width; i++) {
if ((toggle++ & 0x1) != 0) {
if ((buffer[pSrcTemp] & plane) != 0) {
Plane[bank] |= Mask;
}
pSrcTemp++;
}
else {
if (((buffer[pSrcTemp] >> 4) & plane) != 0) {
Plane[bank] |= Mask;
}
}
Mask >>= 1;
if (Mask == 0) {
bank++;
Plane[bank] = 0;
Mask = 0x80;
}
}
//
// Set up the vga so that we see the correct bit plane.
//
seqAddrPort.Write8(SEQ_PLANEMASK_REG);
seqDataPort.Write8(plane);
//
// bank will go from bank1 to bank2
//
bank = bank1;
pDstTemp = pDst;
//
// Set Bitmask for left edge.
//
graphAddrPort.Write8(GRAPH_BITMASK_REG);
graphDataPort.Write8(lMask);
// The read triggers the latch register.
screenBuffer.Read8(pDstTemp);
screenBuffer.Write8(pDstTemp++, Plane[bank++]);
if (bCenterSection) {
graphAddrPort.Write8(GRAPH_BITMASK_REG);
graphDataPort.Write8(0xff);
screenBuffer.Write8(pDstTemp, Plane, bank, count);
bank += count;
pDstTemp += count;
}
if (bRightEdge) {
//
// Set bitmask for right edge.
//
graphAddrPort.Write8(GRAPH_BITMASK_REG);
graphDataPort.Write8(rMask);
// The read triggers the latch register.
screenBuffer.Read8(pDstTemp);
screenBuffer.Write8(pDstTemp, Plane[bank]);
}
}
pDst += DELTA;
pSrc += ScanWidth;
}
// Restore the settings.
seqAddrPort.Write8(SEQ_PLANEMASK_REG);
seqDataPort.Write8(0x0f);
}
private void ReadWriteMode(byte mode)
{
graphAddrPort.Write8(GRAPH_MODE_REG);
graphDataPort.Write8(mode);
}
