public const ushort PspSeg = ImageLoadSeg - 16; // 0x192
public RawProgramMain(
Processor.x86.CSharpExecutor.Cpu implementation,
ConfigurationDto configuration,
MethodInfoCollection methodInfoCollection,
DefinitionCollection definitionCollection,
IServiceProvider serviceProvider)
: base(implementation)
{
MethodInfoCollection = methodInfoCollection;
Configuration = configuration;
Implementation = implementation;
DefinitionCollection = definitionCollection;
ServiceProvider = serviceProvider;
DosMemory = new DosMemory(implementation, this);
DosInterrupt = new DosInterrupt(implementation, this);
DosTimer = new DosTimer(implementation, this);
DosPort = new DosPort(implementation, this);
DosDma = new DosDma(implementation, this);
DosPic = new DosPic(implementation, this);
Implementation.MethodInfoCollection = MethodInfoCollection;
implementation.CompiledMethodCollection = this;
implementation.runIrqs += (sender, args) => DosPic.RunIrqs();
DosPort.SubscribeToCpuPortEvents();
}
/** @param num first or second DMA controller */
public DmaController(int num, Processor.x86.CSharpExecutor.Cpu cpu)
{
_ctrlnum = num;
for (var i = 0; i < 4; i++)
{
_dmaChannels[i] = new DmaChannel(num * 4 + i, num == 1, cpu);
}
}
public DmaChannel(int num, bool dma16, Processor.x86.CSharpExecutor.Cpu cpu)
{
if (num == 4)
{
return;
}
ChanNum = num;
_cpu = cpu;
Dma16 = dma16 ? 0x1 : 0x0;
Increment = true;
}
public DosPic(Processor.x86.CSharpExecutor.Cpu implementation, RawProgramMain rawProgramMain)
: base(implementation)
{
Implementation = implementation;
RawProgramMain = rawProgramMain;
/* Setup pic0 and pic1 with initial values like DOS has normally */
for (var i = 0; i < 2; i++)
{
pics[i].masked = 0xff;
pics[i].auto_eoi = false;
pics[i].rotate_on_auto_eoi = false;
pics[i].request_issr = false;
pics[i].special = false;
pics[i].single = false;
pics[i].icw_index = 0;
pics[i].icw_words = 0;
}
for (var i = 0; i <= 7; i++)
{
irqs[i].active = false;
irqs[i].masked = true;
irqs[i].inservice = false;
irqs[i + 8].active = false;
irqs[i + 8].masked = true;
irqs[i + 8].inservice = false;
irqs[i].InterruptVector = 0x8 + i;
irqs[i + 8].InterruptVector = 0x70 + i;
}
irqs[0].masked = false; /* Enable system timer */
irqs[1].masked = false; /* Enable Keyboard IRQ */
irqs[2].masked = false; /* Enable second pic */
irqs[8].masked = false; /* Enable RTC IRQ */
// if (machine == MCH_PCJR)
// {
// /* Enable IRQ6 (replacement for the NMI for PCJr) */
// irqs[6].masked = false;
// }
}
