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Minor improvements on the ALi M1217

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This commit is contained in:
Panagiotis
2021-04-02 10:15:27 +03:00
committed by GitHub
parent 3bf216d645
commit 698d4ce8a7
1 changed files with 7 additions and 14 deletions
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21
src/chipset/ali1217.c
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@@ -33,6 +33,7 @@
#include <86box/port_92.h>
#include <86box/chipset.h>
#define ENABLE_ALI1217_LOG 1
#ifdef ENABLE_ALI1217_LOG
int ali1217_do_log = ENABLE_ALI1217_LOG;
static void
@@ -57,18 +58,12 @@ typedef struct
int cfg_locked;
} ali1217_t;
static void ali1217_shadow_recalc(ali1217_t *dev)
static void ali1217_shadow_recalc(int reg_15, ali1217_t *dev)
{
for (uint8_t i = 0; i < 4; i++)
{
mem_set_mem_state_both(0xc0000 + (i << 15), 0x8000, ((dev->regs[0x14] & (1 << (i * 2))) ? MEM_READ_INTERNAL : MEM_READ_EXTANY) | ((dev->regs[0x14] & (1 << ((i * 2) + 1))) ? MEM_WRITE_INTERNAL : MEM_WRITE_EXTANY));
mem_set_mem_state_both(0xe0000 + (i << 15), 0x8000, ((dev->regs[0x15] & (1 << (i * 2))) ? MEM_READ_INTERNAL : MEM_READ_EXTANY) | ((dev->regs[0x15] & (1 << ((i * 2) + 1))) ? MEM_WRITE_INTERNAL : MEM_WRITE_EXTANY));
}
mem_set_mem_state_both((reg_15 ? 0xe0000 : 0xc0000) + (i << 15), 0x8000, ((dev->regs[0x14 + reg_15] & (1 << (i * 2))) ? MEM_READ_INTERNAL : MEM_READ_EXTANY) | ((dev->regs[0x14 + reg_15] & (1 << ((i * 2) + 1))) ? MEM_WRITE_INTERNAL : MEM_WRITE_EXTANY));
shadowbios = !!(dev->regs[0x15] & 5);
shadowbios_write = !!(dev->regs[0x15] & 0x0a);
flushmmucache();
flushmmucache_nopc();
}
static void
@@ -84,8 +79,7 @@ ali1217_write(uint16_t addr, uint8_t val, void *priv)
case 0x23:
if (dev->index != 0x13)
ali1217_log("ALi M1217: dev->regs[%02x] = %02x\n", dev->index, val);
if (dev->index == 0x13)
else
dev->cfg_locked = !(val == 0xc5);
if (!dev->cfg_locked)
@@ -93,7 +87,7 @@ ali1217_write(uint16_t addr, uint8_t val, void *priv)
dev->regs[dev->index] = val;
if ((dev->index == 0x14) || (dev->index == 0x15))
ali1217_shadow_recalc(dev);
ali1217_shadow_recalc(dev->index & 1, dev);
}
break;
}
@@ -104,7 +98,7 @@ ali1217_read(uint16_t addr, void *priv)
{
ali1217_t *dev = (ali1217_t *)priv;
return !(addr == 0x22) ? dev->regs[dev->index] : dev->index;
return (addr == 0x23) ? dev->regs[dev->index] : 0xff;
}
static void
@@ -134,7 +128,6 @@ ali1217_init(const device_t *info)
*/
io_sethandler(0x0022, 0x0002, ali1217_read, NULL, NULL, ali1217_write, NULL, NULL, dev);
ali1217_shadow_recalc(dev);
return dev;
}