1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
|
#ifdef CPU_CPP
//called every 256 clocks; see CPU::add_clocks()
void CPU::step_auto_joypad_poll() {
if(vcounter() >= (ppu.overscan() == false ? 225 : 240)) {
//cache enable state at first iteration
if(status.auto_joypad_counter == 0) status.auto_joypad_latch = status.auto_joypad_poll;
status.auto_joypad_active = status.auto_joypad_counter <= 15;
if(status.auto_joypad_active && status.auto_joypad_latch) {
if(status.auto_joypad_counter == 0) {
input.port1->latch(1);
input.port2->latch(1);
input.port1->latch(0);
input.port2->latch(0);
}
uint2 port0 = input.port1->data();
uint2 port1 = input.port2->data();
status.joy1 = (status.joy1 << 1) | (bool)(port0 & 1);
status.joy2 = (status.joy2 << 1) | (bool)(port1 & 1);
status.joy3 = (status.joy3 << 1) | (bool)(port0 & 2);
status.joy4 = (status.joy4 << 1) | (bool)(port1 & 2);
}
status.auto_joypad_counter++;
}
}
#endif
|
