uint32 sms_z80_run(uint32 cycles) {
return CrabZ80_execute(cpuz80, cycles);
}
uint32 sms_z80_run(uint32 cycles) {
uint32 cyclesdone = 0;
uint32 opcode;
uint16 pc;
int tmp;
static char last_str[256];
char str[256];
static uint16 last_pc = 0;
uint32 c1, c2;
while(cyclesdone < cycles) {
debug_crab_ents = debug_mz80_ents = 0;
debug_port_reads1 = debug_port_reads2 = 0;
debug_mem_reads1 = debug_mem_reads2 = 0;
debug_crab_ports = debug_mz80_ports = 0;
pc = cpuz80->pc.w;
opcode = mread8(cpuz80->pc.w);
if(opcode == 0xED || opcode == 0xCB || opcode == 0xDD || opcode == 0xFD) {
opcode |= (mread8(cpuz80->pc.w + 1) << 8);
}
if((opcode & 0xFF00) == 0xCB00) {
opcode |= (mread8(cpuz80->pc.w + 2) << 16) | (mread8(cpuz80->pc.w + 3) << 24);
}
c1 = CrabZ80_execute(cpuz80, 1);
c2 = z80_execute(1);
cyclesdone += c1;
tmp = _compare_registers() + _compare_memory() + _compare_ports();
CrabZ80_disassemble(str, cpuz80, pc);
if(tmp) {
printf("Cycles done: %d %d\n", (int)c1, (int)c2);
printf("%d errors at: PC = 0x%04X, old_pc = 0x%04X Opcode = 0x%02X",
tmp, pc, last_pc, opcode & 0xFF);
switch(opcode & 0xFF) {
case 0xED:
case 0xCB:
printf("%02X (%s -- %s)\n", (opcode & 0xFF00) >> 8, str,
last_str);
break;
case 0xDD:
case 0xFD:
if((opcode & 0xFF00) == 0xCB00)
printf("%02X%02X%02X (%s -- %s)\n",
(opcode & 0xFF00) >> 8,
(opcode & 0xFF0000) >> 16,
(opcode & 0xFF000000) >> 24, str, last_str);
else
printf("%02X (%s -- %s)\n", (opcode & 0xFF00) >> 8, str,
last_str);
break;
default:
printf("(%s -- %s)\n", str, last_str);
}
}
strcpy(last_str, str);
last_pc = pc;
}
