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Implement additional AS99127F reset register

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This commit is contained in:
RichardG867
2020-11-30 20:18:50 -03:00
parent c536ea6ba5
commit 750c721c58
1 changed files with 21 additions and 2 deletions
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23
src/device/hwm_lm78.c
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@@ -24,6 +24,7 @@
#include <86box/86box.h>
#include <86box/device.h>
#include <86box/io.h>
#include <86box/timer.h>
#include "cpu.h"
#include <86box/i2c.h>
#include <86box/hwm.h>
@@ -50,6 +51,7 @@ typedef struct {
uint32_t local;
hwm_values_t *values;
device_t *lm75[2];
pc_timer_t hard_reset_timer;
uint8_t regs[256];
uint8_t regs_782d[2][16];
@@ -369,10 +371,18 @@ lm78_write(lm78_t *dev, uint8_t reg, uint8_t val, uint8_t bank)
}
break;
case 0x81:
/* CUV4X-LS performs a hard reset through this register. */
if ((dev->local & LM78_AS99127F) && (val == 0xa9)) {
lm78_log("LM78: Hard reset requested through AS99127F\n");
timer_set_delay_u64(&dev->hard_reset_timer, 1); /* hard reset on a timer to avoid issues caused by invalidation of the I2C bus */
}
break;
case 0x87:
/* AS99127F boards perform a soft reset through this register */
/* Other AS99127F boards perform a soft reset through this register. */
if ((dev->local & LM78_AS99127F) && (val == 0x01)) {
lm78_log("LM78: Reset requested through AS99127F\n");
lm78_log("LM78: Soft reset requested through AS99127F\n");
resetx86();
}
break;
@@ -382,6 +392,13 @@ lm78_write(lm78_t *dev, uint8_t reg, uint8_t val, uint8_t bank)
}
static void
lm78_hard_reset_timer(void *priv)
{
pc_reset_hard();
}
static void
lm78_reset(lm78_t *dev, uint8_t initialization)
{
@@ -500,6 +517,8 @@ lm78_init(const device_t *info)
if (dev->local & LM78_AS99127F) {
/* AS99127: different -12V Rin value (bruteforced) */
defaults.voltages[5] = LM78_NEG_VOLTAGE(12000, 2400);
timer_add(&dev->hard_reset_timer, lm78_hard_reset_timer, dev, 0);
} else if (dev->local & LM78_W83782D) {
/* W83782D: different negative voltage formula */
defaults.voltages[5] = LM78_NEG_VOLTAGE2(12000, 232);