You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
127 lines
3.2 KiB
127 lines
3.2 KiB
class SMP : public Processor {
|
|
public:
|
|
static const uint8 iplrom[64];
|
|
uint8 *apuram;
|
|
|
|
unsigned port_read(unsigned port);
|
|
void port_write(unsigned port, unsigned data);
|
|
|
|
unsigned mmio_read(unsigned addr);
|
|
void mmio_write(unsigned addr, unsigned data);
|
|
|
|
void enter();
|
|
void power();
|
|
void reset();
|
|
|
|
void load_state(uint8 **);
|
|
void save_state(uint8 **);
|
|
void save_spc (uint8 *);
|
|
SMP();
|
|
~SMP();
|
|
|
|
//private:
|
|
struct Flags {
|
|
bool n, v, p, b, h, i, z, c;
|
|
|
|
alwaysinline operator unsigned() const {
|
|
return (n << 7) | (v << 6) | (p << 5) | (b << 4)
|
|
| (h << 3) | (i << 2) | (z << 1) | (c << 0);
|
|
};
|
|
|
|
alwaysinline unsigned operator=(unsigned data) {
|
|
n = data & 0x80; v = data & 0x40; p = data & 0x20; b = data & 0x10;
|
|
h = data & 0x08; i = data & 0x04; z = data & 0x02; c = data & 0x01;
|
|
return data;
|
|
}
|
|
|
|
alwaysinline unsigned operator|=(unsigned data) { return operator=(operator unsigned() | data); }
|
|
alwaysinline unsigned operator^=(unsigned data) { return operator=(operator unsigned() ^ data); }
|
|
alwaysinline unsigned operator&=(unsigned data) { return operator=(operator unsigned() & data); }
|
|
};
|
|
|
|
unsigned opcode_number;
|
|
unsigned opcode_cycle;
|
|
|
|
uint16 rd, wr, dp, sp, ya, bit;
|
|
|
|
struct Regs {
|
|
uint16 pc;
|
|
uint8 sp;
|
|
union {
|
|
uint16 ya;
|
|
#ifndef __BIG_ENDIAN__
|
|
struct { uint8 a, y; } B;
|
|
#else
|
|
struct { uint8 y, a; } B;
|
|
#endif
|
|
};
|
|
uint8 x;
|
|
Flags p;
|
|
} regs;
|
|
|
|
struct Status {
|
|
//$00f1
|
|
bool iplrom_enable;
|
|
|
|
//$00f2
|
|
unsigned dsp_addr;
|
|
|
|
//$00f8,$00f9
|
|
unsigned ram00f8;
|
|
unsigned ram00f9;
|
|
} status;
|
|
|
|
template<unsigned frequency>
|
|
struct Timer {
|
|
bool enable;
|
|
uint8 target;
|
|
uint8 stage1_ticks;
|
|
uint8 stage2_ticks;
|
|
uint8 stage3_ticks;
|
|
|
|
inline void tick();
|
|
inline void tick(unsigned clocks);
|
|
};
|
|
|
|
Timer<128> timer0;
|
|
Timer<128> timer1;
|
|
Timer< 16> timer2;
|
|
|
|
inline void tick();
|
|
inline void tick(unsigned clocks);
|
|
alwaysinline void op_io();
|
|
alwaysinline void op_io(unsigned clocks);
|
|
debugvirtual alwaysinline uint8 op_read(uint16 addr);
|
|
debugvirtual alwaysinline void op_write(uint16 addr, uint8 data);
|
|
debugvirtual alwaysinline void op_step();
|
|
alwaysinline void op_writestack(uint8 data);
|
|
alwaysinline uint8 op_readstack();
|
|
static const unsigned cycle_count_table[256];
|
|
uint64 cycle_table_cpu[256];
|
|
unsigned cycle_table_dsp[256];
|
|
uint64 cycle_step_cpu;
|
|
|
|
inline uint8 op_adc (uint8 x, uint8 y);
|
|
inline uint16 op_addw(uint16 x, uint16 y);
|
|
inline uint8 op_and (uint8 x, uint8 y);
|
|
inline uint8 op_cmp (uint8 x, uint8 y);
|
|
inline uint16 op_cmpw(uint16 x, uint16 y);
|
|
inline uint8 op_eor (uint8 x, uint8 y);
|
|
inline uint8 op_inc (uint8 x);
|
|
inline uint8 op_dec (uint8 x);
|
|
inline uint8 op_or (uint8 x, uint8 y);
|
|
inline uint8 op_sbc (uint8 x, uint8 y);
|
|
inline uint16 op_subw(uint16 x, uint16 y);
|
|
inline uint8 op_asl (uint8 x);
|
|
inline uint8 op_lsr (uint8 x);
|
|
inline uint8 op_rol (uint8 x);
|
|
inline uint8 op_ror (uint8 x);
|
|
#ifdef DEBUGGER
|
|
void disassemble_opcode(char *output, uint16 addr);
|
|
inline uint8 disassemble_read(uint16 addr);
|
|
inline uint16 relb(int8 offset, int op_len);
|
|
#endif
|
|
};
|
|
|
|
extern SMP smp;
|