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https://github.com/pnx/m16vm
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50 lines
1.4 KiB
C
50 lines
1.4 KiB
C
/* cpu.h
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*
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* Copyright (C) 2012,2014-2015,2018-2019,2023 Henrik Hautakoski <henrik.hautakoski@gmail.com>
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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,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU 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 Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*/
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#ifndef CPU_H
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#define CPU_H
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#include <stdint.h>
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#include "instr.h"
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#define CPU_NUM_REGS 16
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struct cpu_state {
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// Registers r0, r15
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int16_t reg[CPU_NUM_REGS];
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// Program counter
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uint16_t pc;
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// Instruction
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unsigned char *instr_mem;
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unsigned long instr_cnt;
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};
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void cpu_init(struct cpu_state *state);
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int cpu_instr_load(struct cpu_state *state, void *ptr, unsigned len);
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void cpu_instr_unload(struct cpu_state *state);
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void cpu_set_pc(struct cpu_state *state, uint16_t addr);
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int cpu_tick(struct cpu_state *state);
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#endif /* CPU_H */
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