118 lines
2.6 KiB
C
118 lines
2.6 KiB
C
/*
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* VARCem Virtual ARchaeological Computer EMulator.
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* An emulator of (mostly) x86-based PC systems and devices,
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* using the ISA,EISA,VLB,MCA and PCI system buses, roughly
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* spanning the era between 1981 and 1995.
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*
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* This file is part of the VARCem Project.
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*
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* Implementation of the Commodore PC3 system.
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*
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*
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*
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* Authors: Fred N. van Kempen, <decwiz@yahoo.com>
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* Miran Grca, <mgrca8@gmail.com>
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* Sarah Walker, <tommowalker@tommowalker.co.uk>
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*
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* Copyright 2017,2018 Fred N. van Kempen.
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* Copyright 2016-2018 Miran Grca.
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* Copyright 2008-2018 Sarah Walker.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the:
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*
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* Free Software Foundation, Inc.
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* 59 Temple Place - Suite 330
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* Boston, MA 02111-1307
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* USA.
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*/
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#include <stdio.h>
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#include <stdint.h>
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#include <string.h>
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#include <wchar.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/io.h>
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#include <86box/mem.h>
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#include <86box/lpt.h>
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#include <86box/rom.h>
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#include <86box/serial.h>
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#include <86box/fdd.h>
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#include <86box/fdc.h>
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#include <86box/machine.h>
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static serial_t *cmd_uart;
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static void
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cbm_io_write(uint16_t port, uint8_t val, void *p)
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{
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lpt1_remove();
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lpt2_remove();
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switch (val & 3) {
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case 1:
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lpt1_init(0x3bc);
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break;
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case 2:
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lpt1_init(0x378);
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break;
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case 3:
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lpt1_init(0x278);
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break;
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}
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switch (val & 0xc) {
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case 0x4:
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serial_setup(cmd_uart, 0x2f8, 3);
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break;
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case 0x8:
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serial_setup(cmd_uart, 0x3f8, 4);
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break;
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}
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}
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static void
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cbm_io_init()
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{
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io_sethandler(0x0230, 0x0001, NULL,NULL,NULL, cbm_io_write,NULL,NULL, NULL);
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}
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int
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machine_at_cmdpc_init(const machine_t *model)
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{
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int ret;
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ret = bios_load_interleaved(L"roms/machines/cmdpc30/commodore pc 30 iii even.bin",
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L"roms/machines/cmdpc30/commodore pc 30 iii odd.bin",
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0x000f8000, 32768, 0);
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if (bios_only || !ret)
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return ret;
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machine_at_init(model);
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mem_remap_top(384);
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device_add(&fdc_at_device);
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cmd_uart = device_add(&i8250_device);
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cbm_io_init();
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return ret;
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}
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