mirror of
https://github.com/86Box/86Box.git
synced 2026-02-22 09:35:32 -07:00
8e3b09f323
- Added SL-Enhanced versions of Intel 486 CPUs and Enhanced AMD Am486DX2/DX4 CPUs - Cleaned up the 486 CPU types and updated intel_4x0.c to reflect this - Fixed some incorrect EDX reset and CPUID values - Blacklisted non-SMM capable 486 CPUs on the Soyo 4SA2 motherboard - Merged the non-OverDrive and OverDrive Intel DX4s because of further research confirming them to be functionally identical - Removed SMM support on early 486 CPUs
136 lines
2.3 KiB
C
136 lines
2.3 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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* Handling of the emulated machines.
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*
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*
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*
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* Authors: Sarah Walker, <http://pcem-emulator.co.uk/>
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* Miran Grca, <mgrca8@gmail.com>
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* Fred N. van Kempen, <decwiz@yahoo.com>
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*
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* Copyright 2008-2020 Sarah Walker.
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* Copyright 2016-2020 Miran Grca.
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* Copyright 2017-2020 Fred N. van Kempen.
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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 <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/device.h>
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#include <86box/timer.h>
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#include <86box/dma.h>
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#include <86box/pic.h>
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#include <86box/pit.h>
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#include <86box/mem.h>
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#include <86box/rom.h>
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#include <86box/lpt.h>
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#include <86box/serial.h>
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#include "cpu.h"
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#include <86box/video.h>
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#include <86box/machine.h>
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int bios_only = 0;
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int machine;
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int AT, PCI;
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#ifdef ENABLE_MACHINE_LOG
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int machine_do_log = ENABLE_MACHINE_LOG;
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static void
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machine_log(const char *fmt, ...)
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{
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va_list ap;
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if (machine_do_log)
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{
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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 machine_log(fmt, ...)
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#endif
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static int
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machine_init_ex(int m)
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{
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int ret = 0;
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if (!bios_only) {
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machine_log("Initializing as \"%s\"\n", machine_getname());
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is_vpc = 0;
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/* Set up the architecture flags. */
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AT = IS_AT(machine);
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PCI = IS_ARCH(machine, MACHINE_BUS_PCI);
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/* Reset the memory state. */
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mem_reset();
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smbase = 0x00030000;
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lpt_init();
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}
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/* All good, boot the machine! */
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if (machines[m].init)
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ret = machines[m].init(&machines[m]);
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if (bios_only || !ret)
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return ret;
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/* Reset the graphics card (or do nothing if it was already done
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by the machine's init function). */
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video_reset(gfxcard);
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return ret;
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}
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void
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machine_init(void)
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{
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bios_only = 0;
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(void) machine_init_ex(machine);
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}
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int
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machine_available(int m)
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{
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int ret;
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bios_only = 1;
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ret = machine_init_ex(m);
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bios_only = 0;
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return ret;
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}
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void
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machine_common_init(const machine_t *model)
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{
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/* System devices first. */
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pic_init();
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dma_init();
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cpu_set();
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pit_common_init(!!AT, pit_irq0_timer, NULL);
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}
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