public void Write16(AcpiObject.RegionSpace regionSpace, ulong offset, ushort value)
{
#if DUMP_RAW_READ_WRITES
DebugStub.WriteLine("ACPI write: space: " + regionSpace + ", offset: " + offset + ", bytes: " + 2 + ", value: " + value.ToString("X"));
#endif
switch (regionSpace)
{
case AcpiObject.RegionSpace.SystemMemory:
IoMemory region = IoMemory.MapPhysicalMemory(offset, 2, true /*readable*/, true /*writable*/);
region.Write16(0, value);
break;
case AcpiObject.RegionSpace.SystemIO:
IoPort port = new IoPort((ushort)offset, 2, Access.ReadWrite);
port.Write16(value);
break;
case AcpiObject.RegionSpace.PCI_Config:
pciConfigAddressPort.Write32(PciConfigEnableMask | (uint)offset);
pciConfigDataPort.Write16(value);
break;
default:
throw new Exception("Unimplemented operation region type" + regionSpace);
}
}
//
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);
}
private void IndxOut(IoPort port, byte[] values)
{
for (ushort i = 0; i < values.Length; i++) {
port.Write16((ushort)(i + ((ushort)values[i] << 8)));
}
}