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Added the ZEOS Martin.

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This commit is contained in:
OBattler
2025-05-16 05:04:48 +02:00
parent 4beee4452b
commit 941766f2e8
8 changed files with 226 additions and 52 deletions
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42
src/nvr_at.c
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@@ -296,6 +296,7 @@
#define FLAG_P6RP4_HACK 0x10
#define FLAG_PIIX4 0x20
#define FLAG_MULTI_BANK 0x40
#define FLAG_MARTIN_HACK 0x80
typedef struct local_t {
int8_t stat;
@@ -733,6 +734,13 @@ nvr_read(uint16_t addr, void *priv)
ret = REGD_VRT;
break;
case 0x11:
if (local->flags & FLAG_MARTIN_HACK)
ret = nvr->regs[local->addr[addr_id]] | 0x02;
else
ret = nvr->regs[local->addr[addr_id]];
break;
case 0x2c:
if (!nvr->is_new && (local->flags & FLAG_AMI_1994_HACK))
ret = nvr->regs[local->addr[addr_id]] & 0x7f;
@@ -771,6 +779,17 @@ nvr_read(uint16_t addr, void *priv)
ret = checksum >> 8;
else
ret = checksum & 0xff;
} else if (!nvr->is_new && (local->flags & FLAG_MARTIN_HACK)) {
for (i = 0x10; i <= 0x2d; i++) {
if (i == 0x11)
checksum += (nvr->regs[i] | 0x02);
else
checksum += nvr->regs[i];
}
if (local->addr[addr_id] == 0x2e)
ret = checksum >> 8;
else
ret = checksum & 0xff;
} else
ret = nvr->regs[local->addr[addr_id]];
break;
@@ -1123,9 +1142,11 @@ nvr_at_init(const device_t *info)
if (info->local & 0x10) {
local->def = 0x00;
local->flags |= FLAG_AMI_1992_HACK;
} else if (info->local == 36)
} else if ((info->local == 36) || (info->local == 68)) {
local->def = 0x00;
else
if (info->local == 68)
local->flags |= FLAG_MARTIN_HACK;
} else
local->def = 0xff;
nvr->irq = 8;
local->cent = RTC_CENTURY_AT;
@@ -1160,6 +1181,9 @@ nvr_at_init(const device_t *info)
/* Initialize the generic NVR. */
nvr_init(nvr);
if (nvr->is_new && (local->flags & FLAG_MARTIN_HACK))
nvr->regs[0x11] = nvr->regs[0x2f] = 0x02;
if (nvr_at_inited == 0) {
/* Start the timers. */
timer_add(&local->update_timer, timer_update, nvr, 0);
@@ -1426,6 +1450,20 @@ const device_t amstrad_megapc_nvr_device = {
.config = NULL
};
const device_t martin_nvr_device = {
.name = "Zeos Martin NVRAM",
.internal_name = "martin_nvr",
.flags = DEVICE_ISA16,
.local = 68,
.init = nvr_at_init,
.close = nvr_at_close,
.reset = nvr_at_reset,
.available = NULL,
.speed_changed = nvr_at_speed_changed,
.force_redraw = NULL,
.config = NULL
};
const device_t elt_nvr_device = {
.name = "Epson Equity LT NVRAM",
.internal_name = "elt_nvr",