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struct CPU : Processor::R65816, Thread, public PPUcounter {
uint8 wram[128 * 1024];
enum : bool { Threaded = true };
vector<Thread*> coprocessors;
alwaysinline void step(unsigned clocks);
alwaysinline void synchronize_smp();
void synchronize_ppu();
void synchronize_coprocessors();
void synchronize_controllers();
uint8 port_read(uint2 port) const;
void port_write(uint2 port, uint8 data);
uint8 pio();
bool joylatch();
alwaysinline bool interrupt_pending() { return status.interrupt_pending; }
void enter();
void enable();
void power();
void reset();
void serialize(serializer&);
CPU();
~CPU();
privileged:
unsigned cpu_version = 2; //allowed: 1, 2
#include "dma/dma.hpp"
#include "memory/memory.hpp"
#include "mmio/mmio.hpp"
#include "timing/timing.hpp"
struct Status {
bool interrupt_pending;
unsigned clock_count;
unsigned line_clocks;
//timing
bool irq_lock;
unsigned dram_refresh_position;
bool dram_refreshed;
unsigned hdma_init_position;
bool hdma_init_triggered;
unsigned hdma_position;
bool hdma_triggered;
bool nmi_valid;
bool nmi_line;
bool nmi_transition;
bool nmi_pending;
bool nmi_hold;
bool irq_valid;
bool irq_line;
bool irq_transition;
bool irq_pending;
bool irq_hold;
bool reset_pending;
//DMA
bool dma_active;
unsigned dma_counter;
unsigned dma_clocks;
bool dma_pending;
bool hdma_pending;
bool hdma_mode; //0 = init, 1 = run
//auto joypad polling
bool auto_joypad_active;
bool auto_joypad_latch;
unsigned auto_joypad_counter;
unsigned auto_joypad_clock;
//MMIO
//$2140-217f
uint8 port[4];
//$2181-$2183
uint17 wram_addr;
//$4016-$4017
bool joypad_strobe_latch;
uint32 joypad1_bits;
uint32 joypad2_bits;
//$4200
bool nmi_enabled;
bool hirq_enabled, virq_enabled;
bool auto_joypad_poll;
//$4201
uint8 pio;
//$4202-$4203
uint8 wrmpya;
uint8 wrmpyb;
//$4204-$4206
uint16 wrdiva;
uint8 wrdivb;
//$4207-$420a
uint9 hirq_pos;
uint9 virq_pos;
//$420d
unsigned rom_speed;
//$4214-$4217
uint16 rddiv;
uint16 rdmpy;
//$4218-$421f
uint16 joy1;
uint16 joy2;
uint16 joy3;
uint16 joy4;
} status;
struct ALU {
unsigned mpyctr;
unsigned divctr;
unsigned shift;
} alu;
static void Enter();
void op_step();
struct Debugger {
hook<void (uint24)> op_exec;
hook<void (uint24)> op_read;
hook<void (uint24, uint8)> op_write;
hook<void ()> op_nmi;
hook<void ()> op_irq;
} debugger;
};
extern CPU cpu;
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