0faf6692c9
Changes to device_t struct to accomodate the upcoming PCI IRQ arbitration rewrite; Added device.c/h API to obtain name from the device_t struct; Significant changes to win/win_settings.c to clean up the code a bit and fix bugs; Ported all the CPU and AudioPCI commits from PCem; Added an API call to allow ACPI soft power off to gracefully stop the emulator; Removed the Siemens PCD-2L from the Dev branch because it now works; Removed the Socket 5 HP Vectra from the Dev branch because it now works; Fixed the Compaq Presario and the Micronics Spitfire; Give the IBM PC330 its own list of 486 CPU so it can have DX2's with CPUID 0x470; SMM fixes; Rewrote the SYSENTER, SYSEXIT, SYSCALL, and SYSRET instructions; Changed IDE reset period to match the specification, fixes #929; The keyboard input and output ports are now forced in front of the queue when read, fixes a number of bugs, including the AMI Apollo hanging on soft reset; Added the Intel AN430TX but Dev branched because it does not work; The network code no longer drops packets if the emulated network card has failed to receive them (eg. when the buffer is full); Changes to PCI card adding and renamed some PCI slot types, also added proper AGP bridge slot types; USB UHCI emulation is no longer a stub (still doesn't fully work, but at least Windows XP chk with Debug no longer ASSERT's on it); Fixed NVR on the the SMC FDC37C932QF and APM variants; A number of fixes to Intel 4x0 chipsets, including fixing every register of the 440LX and 440EX; Some ACPI changes.
195 lines
3.9 KiB
C
195 lines
3.9 KiB
C
/*
|
|
* 86Box A hypervisor and IBM PC system emulator that specializes in
|
|
* running old operating systems and software designed for IBM
|
|
* PC systems and compatibles from 1981 through fairly recent
|
|
* system designs based on the PCI bus.
|
|
*
|
|
* This file is part of the 86Box distribution.
|
|
*
|
|
* Implementation of the ALi M1429 chipset.
|
|
*
|
|
* Note: This chipset has no datasheet, everything were done via
|
|
* reverse engineering the BIOS of various machines using it.
|
|
*
|
|
* Authors: Tiseno100
|
|
*
|
|
* Copyright 2020 Tiseno100
|
|
*
|
|
*/
|
|
|
|
#include <stdarg.h>
|
|
#include <stdint.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <wchar.h>
|
|
#define HAVE_STDARG_H
|
|
#include <86box/86box.h>
|
|
#include "cpu.h"
|
|
#include <86box/timer.h>
|
|
#include <86box/io.h>
|
|
#include <86box/device.h>
|
|
#include <86box/keyboard.h>
|
|
#include <86box/mem.h>
|
|
#include <86box/fdd.h>
|
|
#include <86box/fdc.h>
|
|
#include <86box/port_92.h>
|
|
#include <86box/chipset.h>
|
|
|
|
#define disabled_shadow (MEM_READ_EXTANY | MEM_WRITE_EXTANY)
|
|
|
|
#ifdef ENABLE_ALI1429_LOG
|
|
int ali1429_do_log = ENABLE_ALI1429_LOG;
|
|
static void
|
|
ali1429_log(const char *fmt, ...)
|
|
{
|
|
va_list ap;
|
|
|
|
if (ali1429_do_log) {
|
|
va_start(ap, fmt);
|
|
pclog_ex(fmt, ap);
|
|
va_end(ap);
|
|
}
|
|
}
|
|
#else
|
|
#define ali1429_log(fmt, ...)
|
|
#endif
|
|
|
|
|
|
typedef struct
|
|
{
|
|
uint8_t index, cfg_locked,
|
|
regs[256];
|
|
} ali1429_t;
|
|
|
|
static void ali1429_shadow_recalc(ali1429_t *dev)
|
|
{
|
|
|
|
uint32_t base, i, can_write, can_read;
|
|
|
|
shadowbios = (dev->regs[0x13] & 0x40) && (dev->regs[0x14] & 0x01);
|
|
shadowbios_write = (dev->regs[0x13] & 0x40) && (dev->regs[0x14] & 0x02);
|
|
|
|
can_write = (dev->regs[0x14] & 0x02) ? MEM_WRITE_INTERNAL : MEM_WRITE_EXTANY;
|
|
can_read = (dev->regs[0x14] & 0x01) ? MEM_READ_INTERNAL : MEM_READ_EXTANY;
|
|
|
|
for(i = 0; i < 8; i++)
|
|
{
|
|
base = 0xc0000 + (i << 15);
|
|
|
|
if(dev->regs[0x13] & (1 << i))
|
|
mem_set_mem_state_both(base, 0x8000, can_read | can_write);
|
|
else
|
|
mem_set_mem_state_both(base, 0x8000, disabled_shadow);
|
|
|
|
}
|
|
|
|
flushmmucache();
|
|
}
|
|
|
|
static void
|
|
ali1429_write(uint16_t addr, uint8_t val, void *priv)
|
|
{
|
|
ali1429_t *dev = (ali1429_t *) priv;
|
|
|
|
switch (addr) {
|
|
case 0x22:
|
|
dev->index = val;
|
|
break;
|
|
|
|
case 0x23:
|
|
|
|
/* Don't log register unlock patterns */
|
|
if(dev->index != 0x03)
|
|
{
|
|
ali1429_log("M1429: dev->regs[%02x] = %02x\n", dev->index, val);
|
|
}
|
|
|
|
dev->regs[dev->index] = val;
|
|
|
|
/* Unlock/Lock Registers */
|
|
dev->cfg_locked = !(dev->regs[0x03] && 0xc5);
|
|
|
|
if(dev->cfg_locked == 0)
|
|
{
|
|
switch(dev->index){
|
|
/* Shadow RAM */
|
|
case 0x13:
|
|
case 0x14:
|
|
ali1429_shadow_recalc(dev);
|
|
break;
|
|
|
|
/* Cache */
|
|
case 0x18:
|
|
cpu_cache_ext_enabled = (val & 0x80);
|
|
break;
|
|
}
|
|
}
|
|
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
static uint8_t
|
|
ali1429_read(uint16_t addr, void *priv)
|
|
{
|
|
uint8_t ret = 0xff;
|
|
ali1429_t *dev = (ali1429_t *) priv;
|
|
|
|
switch (addr) {
|
|
case 0x23:
|
|
/* Do not conflict with Cyrix configuration registers */
|
|
if(!(((dev->index >= 0xc0) || (dev->index == 0x20)) && cpu_iscyrix))
|
|
ret = dev->regs[dev->index];
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
|
|
static void
|
|
ali1429_close(void *priv)
|
|
{
|
|
ali1429_t *dev = (ali1429_t *) priv;
|
|
|
|
free(dev);
|
|
}
|
|
|
|
|
|
static void *
|
|
ali1429_init(const device_t *info)
|
|
{
|
|
ali1429_t *dev = (ali1429_t *) malloc(sizeof(ali1429_t));
|
|
memset(dev, 0, sizeof(ali1429_t));
|
|
|
|
/*
|
|
M1429 Ports:
|
|
22h Index Port
|
|
23h Data Port
|
|
*/
|
|
io_sethandler(0x022, 0x0001, ali1429_read, NULL, NULL, ali1429_write, NULL, NULL, dev);
|
|
io_sethandler(0x023, 0x0001, ali1429_read, NULL, NULL, ali1429_write, NULL, NULL, dev);
|
|
|
|
dev->cfg_locked = 1;
|
|
|
|
device_add(&port_92_device);
|
|
|
|
dev->regs[0x13] = 0x00;
|
|
dev->regs[0x14] = 0x00;
|
|
ali1429_shadow_recalc(dev);
|
|
|
|
return dev;
|
|
}
|
|
|
|
|
|
const device_t ali1429_device = {
|
|
"ALi M1429",
|
|
0,
|
|
0,
|
|
ali1429_init, ali1429_close, NULL,
|
|
{ NULL }, NULL, NULL,
|
|
NULL
|
|
};
|