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MKE: More clean-ups, made port 3 return 0xFF when read (fixes Windows 95's built-in Panasonic driver), and added the Non-Creative version as well.

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This commit is contained in:
OBattler
2025-07-27 19:21:24 +02:00
parent 1b142299e5
commit 26249b9c4c
3 changed files with 26 additions and 19 deletions
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35
src/cdrom/cdrom_mke.c
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@@ -38,6 +38,9 @@
#include <86box/sound.h>
#include <86box/fifo8.h>
#include <86box/timer.h>
#ifdef ENABLE_MKE_LOG
#include "cpu.h"
#endif
/*
https://elixir.bootlin.com/linux/2.0.29/source/include/linux/sbpcd.h
@@ -168,7 +171,8 @@ mke_get_subq(cdrom_t *dev, uint8_t *b)
b[9] = temp_buf[5];
/* ? */
b[10] = 0;
pclog("mke_get_subq: 0x%02X 0x%02X 0x%02X 0x%02X 0x%02X 0x%02X 0x%02X 0x%02X 0x%02X 0x%02X 0x%02X\n", b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7], b[8], b[9], b[10]);
mke_log("mke_get_subq: 0x%02X 0x%02X 0x%02X 0x%02X 0x%02X 0x%02X 0x%02X 0x%02X 0x%02X 0x%02X 0x%02X\n",
b[0], b[1], b[2], b[3], b[4], b[5], b[6], b[7], b[8], b[9], b[10]);
}
/* Lifted from FreeBSD */
@@ -640,23 +644,25 @@ mke_command(mke_t *mke, uint8_t value)
}
void
mke_write(uint16_t address, uint8_t value, void *priv)
mke_write(uint16_t port, uint8_t val, void *priv)
{
mke_t *mke = (mke_t *) priv;
if (!mke->enable_register || ((address & 0xf) == 3)) switch (address & 0xf) {
mke_log("[%04X:%08X] [W] %04X = %02X\n", CS, cpu_state.pc, port, val);
if (!mke->enable_register || ((port & 0xf) == 3)) switch (port & 0xf) {
case 0:
mke_command(mke, value);
mke_command(mke, val);
break;
case 1:
if (mke->is_sb)
mke->data_select = value;
mke->data_select = val;
break;
case 2:
mke_reset(mke);
break;
case 3:
mke->enable_register = value;
mke->enable_register = val;
break;
default:
mke_log("w %03x %02x\n", address, value);
@@ -665,18 +671,18 @@ mke_write(uint16_t address, uint8_t value, void *priv)
}
uint8_t
mke_read(uint16_t address, void *priv)
mke_read(uint16_t port, void *priv)
{
mke_t *mke = (mke_t *) priv;
uint8_t ret = 0x00;
if (!mke->enable_register) switch (address & 0xf) {
if (!mke->enable_register) switch (port & 0xf) {
case 0:
/* Info */
if (mke->is_sb && mke->data_select)
ret = fifo8_num_used(&mke->data_fifo) ? fifo8_pop(&mke->data_fifo) : 0;
ret = fifo8_num_used(&mke->data_fifo) ? fifo8_pop(&mke->data_fifo) : 0x00;
else
ret = fifo8_num_used(&mke->info_fifo) ? fifo8_pop(&mke->info_fifo) : 0;
ret = fifo8_num_used(&mke->info_fifo) ? fifo8_pop(&mke->info_fifo) : 0x00;
break;
case 1:
/*
@@ -699,17 +705,16 @@ mke_read(uint16_t address, void *priv)
case 2:
/* Data */
if (!mke->is_sb)
ret = fifo8_num_used(&mke->data_fifo) ? fifo8_pop(&mke->data_fifo) : 0;
break;
case 3:
ret = mke->enable_register;
ret = fifo8_num_used(&mke->data_fifo) ? fifo8_pop(&mke->data_fifo) : 0x00;
break;
default:
mke_log("MKE Unknown Read Address: %03x\n",address);
mke_log("MKE Unknown Read Port: %04X\n", port);
ret = 0xff;
break;
}
mke_log("[%04X:%08X] [R] %04X = %02X\n", CS, cpu_state.pc, port, ret);
return ret;
}