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Added Hyundai Super-286TR;

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Fixed the emulation of the Intel 82335 chip used by the Phoenix 386 clone;
Fixed a bug regarding the CGA RGB monitor type;
The IBM PS/1 Model 2121 with ISA is now acknowledged in mem.c.
This commit is contained in:
OBattler
2017-02-20 06:05:11 +01:00
parent 2433771509
commit af03793533
10 changed files with 146 additions and 23 deletions
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97
src/i82335.c
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@@ -19,27 +19,87 @@ void i82335_write(uint16_t addr, uint8_t val, void *priv)
{
int i = 0;
int mem_write = 0;
// pclog("i82335_write(%04X, %02X)\n", addr, val);
switch (addr)
{
case 0x22:
if ((val ^ i82335.reg_22) & 1)
{
if (val & 1)
{
for (i = 0; i < 8; i++)
{
mem_set_mem_state(0xe0000, 0x20000, MEM_READ_INTERNAL | MEM_WRITE_INTERNAL);
shadowbios = 1;
}
}
else
{
for (i = 0; i < 8; i++)
{
mem_set_mem_state(0xe0000, 0x20000, MEM_READ_EXTERNAL | MEM_WRITE_EXTERNAL);
shadowbios = 0;
}
}
flushmmucache();
}
i82335.reg_22 = val | 0xd8;
if (val & 1)
{
for (i = 0; i < 8; i++)
{
mem_mapping_enable(&bios_mapping[i]);
}
}
else
{
for (i = 0; i < 8; i++)
{
mem_mapping_disable(&bios_mapping[i]);
}
}
break;
case 0x23:
i82335.reg_23 = val | 0xd8;
i82335.reg_23 = val;
if ((val ^ i82335.reg_22) & 2)
{
if (val & 2)
{
for (i = 0; i < 8; i++)
{
mem_set_mem_state(0xc0000, 0x20000, MEM_READ_INTERNAL | MEM_WRITE_INTERNAL);
shadowbios = 1;
}
}
else
{
for (i = 0; i < 8; i++)
{
mem_set_mem_state(0xc0000, 0x20000, MEM_READ_EXTERNAL | MEM_WRITE_EXTERNAL);
shadowbios = 0;
}
}
}
if ((val ^ i82335.reg_22) & 0xc)
{
if (val & 2)
{
for (i = 0; i < 8; i++)
{
mem_write = (val & 8) ? MEM_WRITE_DISABLED : MEM_WRITE_INTERNAL;
mem_set_mem_state(0xa0000, 0x20000, MEM_READ_INTERNAL | mem_write);
shadowbios = 1;
}
}
else
{
for (i = 0; i < 8; i++)
{
mem_write = (val & 8) ? MEM_WRITE_DISABLED : MEM_WRITE_EXTERNAL;
mem_set_mem_state(0xa0000, 0x20000, MEM_READ_EXTERNAL | mem_write);
shadowbios = 0;
}
}
}
if ((val ^ i82335.reg_22) & 0xe)
{
flushmmucache();
}
if (val & 0x80)
{
io_removehandler(0x0022, 0x0001, i82335_read, NULL, NULL, i82335_write, NULL, NULL, NULL);
@@ -50,6 +110,7 @@ void i82335_write(uint16_t addr, uint8_t val, void *priv)
uint8_t i82335_read(uint16_t addr, void *priv)
{
// pclog("i82335_read(%04X)\n", addr);
if (addr == 0x22)
{
return i82335.reg_22;
@@ -58,13 +119,17 @@ uint8_t i82335_read(uint16_t addr, void *priv)
{
return i82335.reg_23;
}
else
{
return 0;
}
}
void i82335_init()
{
memset(&i82335, 0, sizeof(i82335_t));
i82335.reg_22 = 0xd9;
i82335.reg_22 = 0xd8;
io_sethandler(0x0022, 0x0014, i82335_read, NULL, NULL, i82335_write, NULL, NULL, NULL);
}