return output_changed;
} else {
ushort_t reload_val = ch->reload_value;
+
+ // TODO: Check this....
+ // Is this correct???
+ if (reload_val == 0) {
+ reload_val = 1;
+ }
+
oscillations -= ch->counter;
ch->counter = 0;
channel_cycles = 1;
-
if (ch->op_mode == SQR_WAVE) {
reload_val -= reload_val % 2;
}
-
+
channel_cycles += oscillations / reload_val;
oscillations = oscillations % reload_val;
// Easy...
state->pit_counter -= cpu_cycles;
} else {
-
+ ushort_t reload_val = state->pit_reload;
// Take off the first part
cpu_cycles -= state->pit_counter;
state->pit_counter = 0;
if (cpu_cycles > state->pit_reload) {
// how many full oscillations
+
+ //PrintError("cpu_cycles = %p, reload = %p...\n",
+ // (void *)(addr_t)cpu_cycles,
+ // (void *)(addr_t)state->pit_reload);
+
+ // How do we check for a one shot....
+ if (state->pit_reload == 0) {
+ reload_val = 1;
+ }
+
tmp_cycles = cpu_cycles;
+
+#ifdef __V3_64BIT__
+ cpu_cycles = tmp_cycles % state->pit_reload;
+ tmp_cycles = tmp_cycles / state->pit_reload;
+#else
cpu_cycles = do_divll(tmp_cycles, state->pit_reload);
-
+#endif
+
oscillations += tmp_cycles;
}
uint_t cpu_khz = V3_CPU_KHZ();
ullong_t reload_val = (ullong_t)cpu_khz * 1000;
- dev_hook_io(dev, CHANNEL0_PORT, &pit_read_channel, &pit_write_channel);
- dev_hook_io(dev, CHANNEL1_PORT, &pit_read_channel, &pit_write_channel);
- dev_hook_io(dev, CHANNEL2_PORT, &pit_read_channel, &pit_write_channel);
- dev_hook_io(dev, COMMAND_PORT, NULL, &pit_write_command);
+ v3_dev_hook_io(dev, CHANNEL0_PORT, &pit_read_channel, &pit_write_channel);
+ v3_dev_hook_io(dev, CHANNEL1_PORT, &pit_read_channel, &pit_write_channel);
+ v3_dev_hook_io(dev, CHANNEL2_PORT, &pit_read_channel, &pit_write_channel);
+ v3_dev_hook_io(dev, COMMAND_PORT, NULL, &pit_write_command);
#ifdef DEBUG_PIT
PrintDebug("8254 PIT: OSC_HZ=%d, reload_val=", OSC_HZ);
};
-struct vm_device * create_pit() {
+struct vm_device * v3_create_pit() {
struct pit * pit_state = NULL;
pit_state = (struct pit *)V3_Malloc(sizeof(struct pit));
V3_ASSERT(pit_state != NULL);
- struct vm_device * dev = create_device("PIT", &dev_ops, pit_state);
+ struct vm_device * dev = v3_create_device("PIT", &dev_ops, pit_state);
return dev;
}