mirror of
https://github.com/86Box/86Box.git
synced 2026-02-23 18:08:20 -07:00
124 lines
2.6 KiB
C
124 lines
2.6 KiB
C
/*
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* 86Box A hypervisor and IBM PC system emulator that specializes in
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* running old operating systems and software designed for IBM
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* PC systems and compatibles from 1981 through fairly recent
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* system designs based on the PCI bus.
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*
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* This file is part of the 86Box distribution.
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*
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* Emulation of the Philips XT-compatible machines.
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*
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* Authors: EngiNerd <webmaster.crrc@yahoo.it>
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*
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* Copyright 2020-2025 EngiNerd.
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*/
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#include <stdarg.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <wchar.h>
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#define HAVE_STDARG_H
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#include <86box/86box.h>
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#include <86box/nmi.h>
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#include "cpu.h"
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#include <86box/timer.h>
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#include <86box/pit.h>
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#include <86box/mem.h>
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#include <86box/device.h>
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#include <86box/fdd.h>
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#include <86box/fdc.h>
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#include <86box/fdc_ext.h>
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#include <86box/hdc.h>
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#include <86box/gameport.h>
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#include <86box/ibm_5161.h>
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#include <86box/keyboard.h>
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#include <86box/rom.h>
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#include <86box/machine.h>
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#include <86box/chipset.h>
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#include <86box/io.h>
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#include <86box/video.h>
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#include <86box/plat_unused.h>
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typedef struct sanyo_t {
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uint8_t reg;
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} sanyo_t;
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#ifdef ENABLE_SANYO_LOG
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int sanyo_do_log = ENABLE_SANYO_LOG;
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static void
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sanyo_log(const char *fmt, ...)
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{
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va_list ap;
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if (sanyo_do_log) {
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va_start(ap, fmt);
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pclog_ex(fmt, ap);
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va_end(ap);
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}
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}
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#else
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# define sanyo_log(fmt, ...)
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#endif
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static void
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sanyo_write(uint16_t port, uint8_t val, void *priv)
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{
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sanyo_t *dev = (sanyo_t *) priv;
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dev->reg = val;
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cpu_waitstates = !(val & 0x01);
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cpu_update_waitstates();
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sanyo_log("Sanyo MBC-17 Mainboard: Write %02x at %02x\n", val, port);
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}
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static uint8_t
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sanyo_read(uint16_t port, void *priv)
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{
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const sanyo_t *dev = (sanyo_t *) priv;
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uint8_t ret = 0xff;
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ret = dev->reg;
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sanyo_log("Sanyo MBC-17 Mainboard: Read %02x at %02x\n", ret, port);
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return ret;
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}
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static void
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sanyo_close(void *priv)
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{
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sanyo_t *dev = (sanyo_t *) priv;
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free(dev);
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}
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static void *
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sanyo_init(UNUSED(const device_t *info))
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{
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sanyo_t *dev = (sanyo_t *) calloc(1, sizeof(sanyo_t));
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dev->reg = cpu_waitstates ? 0x00 : 0x01;
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io_sethandler(0x0063, 0x01, sanyo_read, NULL, NULL, sanyo_write, NULL, NULL, dev);
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return dev;
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}
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const device_t sanyo_device = {
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.name = "Sanyo MBC-17 Mainboard",
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.internal_name = "sanyo",
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.flags = 0,
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.local = 0,
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.init = sanyo_init,
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.close = sanyo_close,
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.reset = NULL,
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.available = NULL,
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.speed_changed = NULL,
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.force_redraw = NULL,
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.config = NULL
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};
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