Function cpu_execute

core/cpu.c:892–1645

}

void cpu_execute(void) {
    /* variable declarations */
    int8_t s;
    uint32_t w = 0;

    uint8_t old = 0;
    uint32_t old_word;

    uint8_t new = 0;
    uint32_t new_word;

    uint32_t op_word;

    eZ80registers_t *r = &cpu.registers;
    eZ80context_t context;

    while (true) {
    cpu_execute_continue:
        if (cpu.IEF_wait && cpu.cycles >= cpu.eiDelay) {
            cpu.IEF_wait = false;
            cpu.IEF1 = cpu.IEF2 = true;
        }
        if (cpu.NMI || (cpu.IEF1 && (intrpt->status & intrpt->enabled))) {
            if (cpu.halted) {
                cpu.cycles++;
            } else {
                cpu_prefetch_discard();
            }
            cpu.cycles++;
            cpu.L = cpu.IL = cpu.ADL || cpu.MADL;
            cpu.IEF1 = cpu.halted = cpu.inBlock = false;
            if (cpu.NMI) {
                cpu.NMI = false;
                cpu_interrupt(0x66);
            } else {
                cpu.IEF2 = false;
                if (cpu.IM == 2) {
                    cpu_interrupt(0x38);
                } else {
                    if (asic.im2 && cpu.IM == 3) {
                        cpu.cycles++;
                        cpu_interrupt(cpu_read_word(r->I << 8 | (bus_rand() & 0xFF)));
                    } else {
                        cpu_interrupt(bus_rand() & 0x38);
                    }
                }
            }
            cpu_restore_next();
            cpu_inst_start();
        } else if (cpu.halted) {
            cpu_halt();
        } else {
            cpu_restore_next();
        }
        if (cpu.cycles >= cpu.next) {
            break;
        }
        if (cpu.inBlock) {