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Added PS/1 model 2011 emulation.

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This commit is contained in:
TomW 2015-06-21 16:03:33 +01:00
commit 9f09e9c370
13 changed files with 320 additions and 71 deletions
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17
src/fdc.c
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@ -38,6 +38,8 @@ typedef struct FDC
int data_ready;
int inread;
int dskchg_activelow;
} FDC;
static FDC fdc;
@ -374,7 +376,12 @@ uint8_t fdc_read(uint16_t addr, void *priv)
switch (addr&7)
{
case 1: /*???*/
temp=0x50;
// temp=0x50;
temp = 0x70;
if (fdc.dor & 1)
temp &= ~0x40;
else
temp &= ~0x20;
break;
case 3:
temp = 0x20;
@ -426,7 +433,7 @@ uint8_t fdc_read(uint16_t addr, void *priv)
temp = (disc_changed[fdc.dor & 1] || drive_empty[fdc.dor & 1])?0x80:0;
else
temp = 0;
if (AMSTRADIO) /*PC2086/3086 seem to reverse this bit*/
if (fdc.dskchg_activelow) /*PC2086/3086 seem to reverse this bit*/
temp ^= 0x80;
// printf("- DC %i %02X %02X %i %i - ",fdc.dor & 1, fdc.dor, 0x10 << (fdc.dor & 1), discchanged[fdc.dor & 1], driveempty[fdc.dor & 1]);
// discchanged[fdc.dor&1]=0;
@ -942,6 +949,7 @@ void fdc_indexpulse()
void fdc_init()
{
timer_add(fdc_callback, &disctime, &disctime, NULL);
fdc.dskchg_activelow = 0;
}
void fdc_add()
@ -968,3 +976,8 @@ void fdc_discchange_clear(int drive)
{
disc_changed[drive] = 0;
}
void fdc_set_dskchg_activelow()
{
fdc.dskchg_activelow = 1;
}