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Add PS/2 Model 50 emulation.

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This commit also adds basic MCA emulation.
This commit also adds emulation of the PS/2 Type 1 DMA controller.
This commit is contained in:
SarahW 2017-04-06 22:00:40 +01:00
commit 9c1d8e5022
29 changed files with 911 additions and 95 deletions
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41
src/pit.c
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@ -573,6 +573,20 @@ void pit_irq0_timer_pcjr(int new_out, int old_out)
picintc(1);
}
void pit_irq0_ps2(int new_out, int old_out)
{
//pclog("pit_irq0_ps2 %i %i\n", new_out, old_out);
if (new_out && !old_out)
{
picint(1);
pit_set_gate_no_timer(&pit2, 0, 1);
}
if (!new_out)
picintc(1);
if (!new_out && old_out)
pit_clock(&pit2, 0);
}
void pit_refresh_timer_xt(int new_out, int old_out)
{
if (new_out && !old_out)
@ -599,6 +613,12 @@ void pit_speaker_timer(int new_out, int old_out)
ppispeakon = new_out;
}
void pit_nmi_ps2(int new_out, int old_out)
{
nmi = new_out;
if (nmi)
nmi_auto_clear = 1;
}
void pit_init()
{
@ -622,3 +642,24 @@ void pit_init()
pit_set_out_func(&pit, 1, pit_null_timer);
pit_set_out_func(&pit, 2, pit_speaker_timer);
}
void pit_ps2_init()
{
pit_reset(&pit2);
io_sethandler(0x0044, 0x0001, pit_read, NULL, NULL, pit_write, NULL, NULL, &pit2);
io_sethandler(0x0047, 0x0001, pit_read, NULL, NULL, pit_write, NULL, NULL, &pit2);
pit2.gate[0] = 0;
pit2.using_timer[0] = 0;
pit2.disabled[0] = 1;
pit2.pit_nr[0].nr = 0;
pit2.pit_nr[0].pit = &pit2;
timer_add(pit_timer_over, &pit2.c[0], &pit2.running[0], (void *)&pit2.pit_nr[0]);
pit_set_out_func(&pit, 0, pit_irq0_ps2);
pit_set_out_func(&pit2, 0, pit_nmi_ps2);
}