80486DX2-66/86Box-fork
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Implemented the SMC FDC37C932QFP NVR stuff. It doesn't fix that HP Vectra, but it's still nice to have it just in case.

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This commit is contained in:
OBattler
2020-04-10 22:32:03 +02:00
parent 8c0bafd16f
commit a45d5173ba
5 changed files with 171 additions and 10 deletions
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58
src/nvr_at.c
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@@ -296,7 +296,8 @@ typedef struct {
uint8_t cent;
uint8_t def, flags;
uint8_t addr[8], wp[2];
uint8_t addr[8], wp[2],
bank[8], *lock;
int16_t count, state;
@@ -566,6 +567,8 @@ nvr_write(uint16_t addr, uint8_t val, void *priv)
sub_cycles(ISA_CYCLES(8));
if (addr & 1) {
if (local->bank[addr_id] == 0xff)
return;
old = nvr->regs[local->addr[addr_id]];
switch(local->addr[addr_id]) {
case RTC_REGA:
@@ -603,6 +606,8 @@ nvr_write(uint16_t addr, uint8_t val, void *priv)
break;
if ((local->addr[addr_id] >= 0xb8) && (local->addr[addr_id] <= 0xbf) && local->wp[1])
break;
if (local->lock[local->addr[addr_id]])
break;
if (nvr->regs[local->addr[addr_id]] != val) {
nvr->regs[local->addr[addr_id]] = val;
nvr_dosave = 1;
@@ -627,6 +632,8 @@ nvr_write(uint16_t addr, uint8_t val, void *priv)
local->addr[addr_id] &= 0x7f;
else if ((addr_id == 0x1) && (local->flags & FLAG_PIIX4))
local->addr[addr_id] = (local->addr[addr_id] & 0x7f) | 0x80;
if (local->bank[addr_id] > 0)
local->addr[addr_id] = (local->addr[addr_id] & 0x7f) | (0x80 * local->bank[addr_id]);
if (!(machines[machine].flags & MACHINE_MCA) &&
!(machines[machine].flags & MACHINE_NONMI))
nmi_mask = (~val & 0x80);
@@ -646,6 +653,9 @@ nvr_read(uint16_t addr, void *priv)
sub_cycles(ISA_CYCLES(8));
if ((addr & 1) && (local->bank[addr_id] == 0xff))
return 0xff;
if (addr & 1) switch(local->addr[addr_id]) {
case RTC_REGA:
ret = (nvr->regs[RTC_REGA] & 0x7f) | local->stat;
@@ -693,6 +703,22 @@ nvr_read(uint16_t addr, void *priv)
}
/* Secondary NVR write - used by SMC. */
static void
nvr_sec_write(uint16_t addr, uint8_t val, void *priv)
{
nvr_write(0x72 + (addr & 1), val, priv);
}
/* Secondary NVR read - used by SMC. */
static uint8_t
nvr_sec_read(uint16_t addr, void *priv)
{
return nvr_read(0x72 + (addr & 1), priv);
}
/* Reset the RTC state to 1980/01/01 00:00. */
static void
nvr_reset(nvr_t *nvr)
@@ -771,6 +797,14 @@ nvr_at_handler(int set, uint16_t base, nvr_t *nvr)
}
void
nvr_at_sec_handler(int set, uint16_t base, nvr_t *nvr)
{
io_handler(set, base, 2,
nvr_sec_read,NULL,NULL, nvr_sec_write,NULL,NULL, nvr);
}
void
nvr_wp_set(int set, int h, nvr_t *nvr)
{
@@ -780,6 +814,26 @@ nvr_wp_set(int set, int h, nvr_t *nvr)
}
void
nvr_bank_set(int base, uint8_t bank, nvr_t *nvr)
{
local_t *local = (local_t *) nvr->data;
local->bank[base] = bank;
}
void
nvr_lock_set(int base, int size, int lock, nvr_t *nvr)
{
local_t *local = (local_t *) nvr->data;
int i;
for (i = 0; i < size; i++)
local->lock[base + i] = lock;
}
static void *
nvr_at_init(const device_t *info)
{
@@ -797,6 +851,8 @@ nvr_at_init(const device_t *info)
/* This is machine specific. */
nvr->size = machines[machine].nvrmask + 1;
local->lock = (uint8_t *) malloc(nvr->size);
memset(local->lock, 0x00, nvr->size);
local->def = 0x00;
local->flags = 0x00;
switch(info->local & 7) {