/*
 * VARCem	Virtual ARchaeological Computer EMulator.
 *		An emulator of (mostly) x86-based PC systems and devices,
 *		using the ISA,EISA,VLB,MCA  and PCI system buses, roughly
 *		spanning the era between 1981 and 1995.
 *
 *		This file is part of the VARCem Project.
 *
 *		Implementation of the Commodore PC3 system.
 *
 *
 *
 * Authors:	Fred N. van Kempen, <decwiz@yahoo.com>
 *		Miran Grca, <mgrca8@gmail.com>
 *		Sarah Walker, <tommowalker@tommowalker.co.uk>
 *
 *		Copyright 2017,2018 Fred N. van Kempen.
 *		Copyright 2016-2018 Miran Grca.
 *		Copyright 2008-2018 Sarah Walker.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free  Software  Foundation; either  version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is  distributed in the hope that it will be useful, but
 * WITHOUT   ANY  WARRANTY;  without  even   the  implied  warranty  of
 * MERCHANTABILITY  or FITNESS  FOR A PARTICULAR  PURPOSE. See  the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the:
 *
 *   Free Software Foundation, Inc.
 *   59 Temple Place - Suite 330
 *   Boston, MA 02111-1307
 *   USA.
*/
#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include <wchar.h>
#include <86box/86box.h>
#include <86box/device.h>
#include <86box/timer.h>
#include <86box/io.h>
#include <86box/mem.h>
#include <86box/fdc_ext.h>
#include <86box/lpt.h>
#include <86box/rom.h>
#include <86box/serial.h>
#include <86box/fdd.h>
#include <86box/fdc.h>
#include <86box/machine.h>


static serial_t *cmd_uart;


static void
cbm_io_write(uint16_t port, uint8_t val, void *p)
{
    lpt1_remove();
    lpt2_remove();

    switch (val & 3) {
	case 1:
		lpt1_init(0x3bc);
		break;
	case 2:
		lpt1_init(0x378);
		break;
	case 3:
		lpt1_init(0x278);
		break;
    }

    switch (val & 0xc) {
	case 0x4:
		serial_setup(cmd_uart, 0x2f8, 3);
		break;
	case 0x8:
		serial_setup(cmd_uart, 0x3f8, 4);
		break;
    }
}


static void
cbm_io_init()
{
    io_sethandler(0x0230, 0x0001, NULL,NULL,NULL, cbm_io_write,NULL,NULL, NULL);
}


int
machine_at_cmdpc_init(const machine_t *model)
{
    int ret;

    ret = bios_load_interleaved("roms/machines/cmdpc30/commodore pc 30 iii even.bin",
				"roms/machines/cmdpc30/commodore pc 30 iii odd.bin",
				0x000f8000, 32768, 0);

    if (bios_only || !ret)
	return ret;

    machine_at_init(model);

    mem_remap_top(384);

    if (fdc_type == FDC_INTERNAL)
    device_add(&fdc_at_device);

    cmd_uart = device_add(&ns8250_device);

    cbm_io_init();

    return ret;
}