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/*
* 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 */
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