/*
 * TR8 VM
 * Copyright (C) 2023 by Juan J. Martinez <jjm@usebox.net>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 *
 */

#ifndef _TR8_H
#define _TR8_H

#define VIDEO_RAM 0xbf00
#define VIDEO_RAM_LEN 16384
#define FRAME_INT_VECT 0xff00

typedef struct
{
    uint16_t pc;
    uint16_t sp;
    uint16_t ssp;
    uint8_t f;
    uint8_t intr;
    uint8_t regs[4];
    uint32_t icnt;
    void (*write_m)(uint16_t, uint8_t);
    uint8_t (*read_m)(uint16_t);
    uint8_t (*port)(uint8_t, uint8_t);
} Tr8;

void tr8_init(Tr8 *vm, void (*write_m)(uint16_t, uint8_t), uint8_t (*read_m)(uint16_t), uint8_t (*port)(uint8_t, uint8_t));
uint8_t tr8_eval(Tr8 *vm);
uint8_t tr8_frame_int(Tr8 *vm);

#endif /* _TR8_H */