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SCAT improvements :

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- Improved ROMCS mapping on top address area.
- Changed SCAT chipset revision.
- DMA wait control state register is now writable.
Patch from Greatpsycho.
This commit is contained in:
SarahW 2018-01-27 13:52:43 +00:00
commit 604dce908b
1 changed files with 4 additions and 3 deletions
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7
src/scat.c
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@ -243,6 +243,7 @@ void scat_write(uint16_t port, uint8_t val, void *priv)
case 0x23:
switch (scat_index)
{
case SCAT_DMA_WAIT_STATE_CONTROL:
case SCAT_CLOCK_CONTROL:
case SCAT_PERIPHERAL_CONTROL:
scat_reg_valid = 1;
@ -529,7 +530,7 @@ void scat_init()
}
scat_regs[SCAT_DMA_WAIT_STATE_CONTROL] = 0;
scat_regs[SCAT_VERSION] = 10;
scat_regs[SCAT_VERSION] = 4;
scat_regs[SCAT_CLOCK_CONTROL] = 2;
scat_regs[SCAT_PERIPHERAL_CONTROL] = 0x80;
scat_regs[SCAT_MISCELLANEOUS_STATUS] = 0x37;
@ -568,7 +569,7 @@ void scat_init()
// TODO - Only normal CPU accessing address FF0000 to FFFFFF mapped to ROM. Normal CPU accessing address FC0000 to FEFFFF map to ROM should be implemented later.
for (i = 12; i < 16; i++)
{
mem_mapping_add(&scat_high_mapping[i], (i << 14) + 0xFC0000, 0x04000, mem_read_bios, mem_read_biosw, mem_read_biosl, mem_write_null, mem_write_nullw, mem_write_nulll, rom + (i << 14), 0, NULL);
mem_mapping_add(&scat_high_mapping[i], (i << 14) + 0xFC0000, 0x04000, mem_read_bios, mem_read_biosw, mem_read_biosl, mem_write_null, mem_write_nullw, mem_write_nulll, rom + ((i << 14) & biosmask), 0, NULL);
}
for(i=0;i<6;i++)
@ -633,7 +634,7 @@ void scatsx_init()
// TODO - Only normal CPU accessing address FF0000 to FFFFFF mapped to ROM. Normal CPU accessing address FC0000 to FEFFFF map to ROM should be implemented later.
for (i = 12; i < 16; i++)
{
mem_mapping_add(&scat_high_mapping[i], (i << 14) + 0xFC0000, 0x04000, mem_read_bios, mem_read_biosw, mem_read_biosl, mem_write_null, mem_write_nullw, mem_write_nulll, rom + (i << 14), 0, NULL);
mem_mapping_add(&scat_high_mapping[i], (i << 14) + 0xFC0000, 0x04000, mem_read_bios, mem_read_biosw, mem_read_biosl, mem_write_null, mem_write_nullw, mem_write_nulll, rom + ((i << 14) & biosmask), 0, NULL);
}
for(i=0;i<6;i++)