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Merge branch 'master' of github.com:86Box/86Box into tc1995

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TC1995
2020-07-03 21:40:50 +02:00
parent f8870d421e b5d02a8039
commit bef93a81b3
6 changed files with 169 additions and 2 deletions
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145
src/chipset/opti291.c Normal file
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@@ -0,0 +1,145 @@
/*
* 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 OPTi 82C291 chipset.
* Authors: plant/nerd73
*
* Copyright 2020 plant/nerd73.
*/
#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>
typedef struct
{
uint8_t index,
regs[256];
} opti291_t;
static void opti291_recalc(opti291_t *dev)
{
uint32_t base;
uint32_t i, shflags, write = 0;
for (i = 0; i < 4; i++) {
base = 0xe0000 + (i << 14);
shflags = (dev->regs[0x24] & (1 << (i+4))) ? MEM_READ_INTERNAL : MEM_READ_EXTANY;
shflags |= (dev->regs[0x24] & (1 << (i))) ? write : MEM_WRITE_EXTANY;
write = (dev->regs[0x27] & 0x40) ? MEM_WRITE_DISABLED : MEM_WRITE_INTERNAL;
mem_set_mem_state(base, 0x4000, shflags);
}
for (i = 0; i < 4; i++) {
base = 0xd0000 + (i << 14);
shflags = (dev->regs[0x25] & (1 << (i+4))) ? MEM_READ_INTERNAL : MEM_READ_EXTANY;
shflags |= (dev->regs[0x25] & (1 << (i))) ? write : MEM_WRITE_EXTANY;
write = (dev->regs[0x27] & 0x20) ? MEM_WRITE_DISABLED : MEM_WRITE_INTERNAL;
mem_set_mem_state(base, 0x4000, shflags);
}
for (i = 0; i < 4; i++) {
base = 0xc0000 + (i << 14);
shflags = (dev->regs[0x26] & (1 << (i+4))) ? MEM_READ_INTERNAL : MEM_READ_EXTANY;
shflags |= (dev->regs[0x26] & (1 << i)) ? write : MEM_WRITE_EXTANY;
write = (dev->regs[0x27] & 0x10) ? MEM_WRITE_DISABLED : MEM_WRITE_INTERNAL;
mem_set_mem_state(base, 0x4000, shflags);
}
flushmmucache();
}
static void
opti291_write(uint16_t addr, uint8_t val, void *priv)
{
opti291_t *dev = (opti291_t *) priv;
switch (addr) {
case 0x22:
dev->index = val;
break;
case 0x24:
pclog("OPTi 291: dev->regs[%02x] = %02x\n", dev->index, val);
dev->regs[dev->index] = val;
switch(dev->index){
case 0x21:
cpu_update_waitstates();
break;
case 0x24:
case 0x25:
case 0x26:
case 0x27:
opti291_recalc(dev);
break;
}
break;
}
}
static uint8_t
opti291_read(uint16_t addr, void *priv)
{
uint8_t ret = 0xff;
opti291_t *dev = (opti291_t *) priv;
switch (addr) {
case 0x24:
ret = dev->regs[dev->index];
break;
}
return ret;
}
static void
opti291_close(void *priv)
{
opti291_t *dev = (opti291_t *) priv;
free(dev);
}
static void *
opti291_init(const device_t *info)
{
opti291_t *dev = (opti291_t *) malloc(sizeof(opti291_t));
memset(dev, 0, sizeof(opti291_t));
io_sethandler(0x022, 0x0001, opti291_read, NULL, NULL, opti291_write, NULL, NULL, dev);
io_sethandler(0x024, 0x0001, opti291_read, NULL, NULL, opti291_write, NULL, NULL, dev);
opti291_recalc(dev);
return dev;
}
const device_t opti291_device = {
"OPTi 82C291",
0,
0,
opti291_init, opti291_close, NULL,
NULL, NULL, NULL,
NULL
};

1
src/include/86box/chipset.h
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@@ -61,6 +61,7 @@ extern const device_t ioapic_device;
/* OPTi */
extern const device_t opti283_device;
extern const device_t opti291_device;
extern const device_t opti493_device;
extern const device_t opti495_device;
extern const device_t opti802g_device;

2
src/include/86box/machine.h
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@@ -240,6 +240,8 @@ extern int machine_at_adi386sx_init(const machine_t *);
extern int machine_at_commodore_sl386sx_init(const machine_t *);
extern int machine_at_wd76c10_init(const machine_t *);
extern int machine_at_awardsx_init(const machine_t *);
#ifdef EMU_DEVICE_H
extern const device_t *at_ama932j_get_device(void);
extern const device_t *at_commodore_sl386sx_get_device(void);

18
src/machine/m_at_286_386sx.c
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@@ -515,3 +515,21 @@ machine_at_commodore_sl386sx_init(const machine_t *model)
return ret;
}
int
machine_at_awardsx_init(const machine_t *model)
{
int ret;
ret = bios_load_linear(L"roms/machines/awardsx/Unknown 386SX OPTi291 - Award (original).BIN",
0x000f0000, 65536, 0);
if (bios_only || !ret)
return ret;
machine_at_init(model);
device_add(&opti291_device);
device_add(&fdc_at_device);
return ret;
}

1
src/machine/machine_table.c
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@@ -173,6 +173,7 @@ const machine_t machines[] = {
{ "[SCAT] KMX-C-02", "kmxc02", MACHINE_TYPE_386SX, {{"Intel", cpus_i386SX}, {"AMD", cpus_Am386SX}, {"Cyrix", cpus_486SLC}, {"", NULL}, {"", NULL}}, MACHINE_ISA | MACHINE_AT, 512,16384, 512, 127, machine_at_kmxc02_init, NULL },
{ "[Intel 82335] Shuttle 386SX", "shuttle386sx", MACHINE_TYPE_386SX, {{"Intel", cpus_i386SX}, {"AMD", cpus_Am386SX}, {"Cyrix", cpus_486SLC}, {"", NULL}, {"", NULL}}, MACHINE_ISA | MACHINE_AT, 512, 8192, 128, 127, machine_at_shuttle386sx_init, NULL },
{ "[Intel 82335] ADI 386SX", "adi386sx", MACHINE_TYPE_386SX, {{"Intel", cpus_i386SX}, {"AMD", cpus_Am386SX}, {"Cyrix", cpus_486SLC}, {"", NULL}, {"", NULL}}, MACHINE_ISA | MACHINE_AT, 512, 8192, 128, 127, machine_at_adi386sx_init, NULL },
{ "[OPTi 291] DTK Award 386SX", "awardsx", MACHINE_TYPE_386SX, {{"Intel", cpus_i386SX}, {"AMD", cpus_Am386SX}, {"Cyrix", cpus_486SLC}, {"", NULL}, {"", NULL}}, MACHINE_ISA | MACHINE_AT | MACHINE_HDC, 512, 8192, 128, 127, machine_at_awardsx_init, NULL },
/* 386SX machines which utilize the MCA bus */
{ "[MCA] IBM PS/2 model 55SX", "ibmps2_m55sx", MACHINE_TYPE_386SX, {{"Intel", cpus_i386SX}, {"AMD", cpus_Am386SX}, {"Cyrix", cpus_486SLC}, {"IBM",cpus_IBM486SLC},{"", NULL}}, MACHINE_MCA | MACHINE_AT | MACHINE_PS2 | MACHINE_VIDEO, 1, 8, 1, 63, machine_ps2_model_55sx_init, NULL },

2
src/win/Makefile.mingw
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@@ -572,7 +572,7 @@ CPUOBJ := cpu.o cpu_table.o \
CHIPSETOBJ := acc2168.o cs8230.o ali1429.o headland.o i82335.o \
intel_420ex.o intel_4x0.o intel_sio.o intel_piix.o ioapic.o \
neat.o opti495.o opti895.o opti5x7.o scamp.o scat.o \
sis_85c310.o sis_85c471.o sis_85c496.o opti283.o \
sis_85c310.o sis_85c471.o sis_85c496.o opti283.o opti291.o \
via_apollo.o via_vpx.o via_vt82c586b.o via_vt82c596b.o wd76c10.o vl82c480.o \
amd640.o