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#ifdef CPU_CPP
uint8 CPU::port_read(uint2 port) const { return status.port[port]; }
void CPU::port_write(uint2 port, uint8 data) { status.port[port] = data; }
void CPU::op_io() {
status.clock_count = 6;
dma_edge();
add_clocks(6);
alu_edge();
}
uint8 CPU::op_read(uint32 addr) {
debugger.op_read(addr);
status.clock_count = speed(addr);
dma_edge();
add_clocks(status.clock_count - 4);
regs.mdr = bus.read(addr);
add_clocks(4);
alu_edge();
return regs.mdr;
}
void CPU::op_write(uint32 addr, uint8 data) {
debugger.op_write(addr, data);
alu_edge();
status.clock_count = speed(addr);
dma_edge();
add_clocks(status.clock_count);
bus.write(addr, regs.mdr = data);
}
unsigned CPU::speed(unsigned addr) const {
if(addr & 0x408000) {
if(addr & 0x800000) return status.rom_speed;
return 8;
}
if((addr + 0x6000) & 0x4000) return 8;
if((addr - 0x4000) & 0x7e00) return 6;
return 12;
}
uint8 CPU::disassembler_read(uint32 addr) {
return bus.read(addr);
}
#endif
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