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aa362b81fd
rk65c02/src/rk65c02.h
Radosław Kujawa aa362b81fd Add structs representing current emulator state.
2017-01-17 11:28:42 +01:00

338 lines
10 KiB
C
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#ifndef _RK6502_H_
#define _RK6502_H_
typedef enum {
IMPLIED,
IMMEDIATE,
ZP,
ZPX,
ZPY,
IZP,
IZPX,
IZPY,
RELATIVE,
ABSOLUTE,
ABSOLUTEX,
ABSOLUTEY,
IABSOLUTE,
IABSOLUTEX
} addressing_t;
typedef enum {
STOPPED,
RUNNIG,
STEPPING
} emu_state_t;
struct reg_state {
uint8_t A; /* accumulator */
uint8_t X; /* index X */
uint8_t Y; /* index Y */
uint16_t PC; /* program counter */
uint8_t SP; /* stack pointer */
uint8_t P; /* status */
};
typedef struct reg_state reg_state_t;
struct instrdef {
uint8_t opcode;
const char *mnemonic;
addressing_t mode;
uint8_t size;
};
typedef struct instrdef instrdef_t;
struct instruction {
uint8_t opcode;
instrdef_t def;
uint8_t op1;
uint8_t op2;
};
typedef struct instruction instruction_t;
struct rk65c02emu {
emu_state_t state;
bus_t bus;
reg_state_t regs;
}
typedef struct rk65c02emu rk65c02emu_t;
#define OP_BRK 0x00
#define OP_TSB_ZP 0x04
#define OP_JSR 0x20
#define OP_LDY_IMM 0xA0
#define OP_STP 0xDB
#define OP_INX 0xE8
#define OP_NOP 0xEA
#define OP_UNIMPL 0xFF
const struct instrdef instrs[] = {
{ OP_BRK, "brk", IMPLIED, 1 },
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_NOP, "nop", IMMEDIATE, 2}, /* inv */
{ OP_NOP, "nop", IMPLIED, 1}, /* inv */
{ OP_TSB_ZP, "tsb", ZP, 2},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_JSR, "jsr", ABSOLUTE, 3},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_LDY_IMM, "ldy", IMMEDIATE, 2},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_STP, "stp", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_INX, "inx", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_NOP, "nop", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpl", IMPLIED, 1},
{ OP_UNIMPL, "unimpllast", IMPLIED, 1}
};
#endif /* _RK6502_H_ */
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