CubeGotchi/cpu.h
2024-06-11 18:36:51 +02:00

165 lines
3.4 KiB
C

/*
* TamaLIB - A hardware agnostic Tamagotchi P1 emulation library
*
* Copyright (C) 2021 Jean-Christophe Rona <jc@rona.fr>
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef _CPU_H_
#define _CPU_H_
#include "hal.h"
#define MEMORY_SIZE 0x140 // MEM_RAM_SIZE + MEM_IO_SIZE
#define MEM_RAM_ADDR 0x000
#define MEM_RAM_SIZE 0x280
#define MEM_DISPLAY1_ADDR 0xE00
#define MEM_DISPLAY1_ADDR_OFS 0xB80
#define MEM_DISPLAY1_SIZE 0x050
#define MEM_DISPLAY2_ADDR 0xE80
#define MEM_DISPLAY2_ADDR_OFS 0xBB0
#define MEM_DISPLAY2_SIZE 0x050
#define MEM_IO_ADDR 0xF00
//#define MEM_IO_ADDR_OFS 0xBE0
#define MEM_IO_ADDR_OFS 0xF00
#define MEM_IO_SIZE 0x080
typedef struct breakpoint {
u13_t addr;
struct breakpoint *next;
} breakpoint_t;
typedef struct {
u4_t factor_flag_reg;
u4_t mask_reg;
bool_t triggered; /* 1 if triggered, 0 otherwise */
u8_t vector;
} interrupt_t;
typedef struct {
u13_t pc;
u12_t x;
u12_t y;
u4_t a;
u4_t b;
u5_t np;
u8_t sp;
u4_t flags;
u32_t tick_counter;
u32_t clk_timer_timestamp;
u32_t prog_timer_timestamp;
bool_t prog_timer_enabled;
u8_t prog_timer_data;
u8_t prog_timer_rld;
u32_t call_depth;
u4_t *memory;
interrupt_t interrupts[6];
} cpu_state_t;
/* Pins (TODO: add other pins) */
typedef enum {
PIN_K00 = 0x0,
PIN_K01 = 0x1,
PIN_K02 = 0x2,
PIN_K03 = 0x3,
PIN_K10 = 0X4,
PIN_K11 = 0X5,
PIN_K12 = 0X6,
PIN_K13 = 0X7,
} pin_t;
typedef enum {
PIN_STATE_LOW = 0,
PIN_STATE_HIGH = 1,
} pin_state_t;
typedef enum {
INT_PROG_TIMER_SLOT = 0,
INT_SERIAL_SLOT = 1,
INT_K10_K13_SLOT = 2,
INT_K00_K03_SLOT = 3,
INT_STOPWATCH_SLOT = 4,
INT_CLOCK_TIMER_SLOT = 5,
INT_SLOT_NUM,
} int_slot_t;
/*
typedef struct {
u13_t *pc;
u12_t *x;
u12_t *y;
u4_t *a;
u4_t *b;
u5_t *np;
u8_t *sp;
u4_t *flags;
u32_t *tick_counter;
u32_t *clk_timer_timestamp;
u32_t *prog_timer_timestamp;
bool_t *prog_timer_enabled;
u8_t *prog_timer_data;
u8_t *prog_timer_rld;
u32_t *call_depth;
interrupt_t *interrupts;
u4_t *memory;
} state_t; */
#ifdef __cplusplus
extern "C" {
#endif
void cpu_add_bp(breakpoint_t **list, u13_t addr);
void cpu_free_bp(breakpoint_t **list);
//void cpu_set_speed(u8_t speed);
void cpu_get_state(cpu_state_t *cpustate);
void cpu_set_state(cpu_state_t *cpustate);
u32_t cpu_get_depth(void);
void cpu_set_input_pin(pin_t pin, pin_state_t state);
void cpu_sync_ref_timestamp(void);
void cpu_refresh_hw(void);
void cpu_reset(void);
//u8_t cpu_get_max_number(void);
//bool_t cpu_init(breakpoint_t *breakpoints, u32_t freq);
bool_t cpu_init(u32_t freq);
void cpu_release(void);
int cpu_step(void);
#ifdef __cplusplus
}
#endif
#endif /* _CPU_H_ */