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Take a caveman run at debugging.

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This commit is contained in:
Thomas Harte 2023-11-19 16:05:44 -05:00
parent 05e93f0eb3
commit a8f1c72f5c
1 changed files with 9 additions and 3 deletions
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12
Machines/PCCompatible/PCCompatible.cpp
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@ -24,7 +24,9 @@ template <bool is_8254>
class PIT { class PIT {
public: public:
template <int channel> uint8_t read() { template <int channel> uint8_t read() {
return channels_[channel].read(); const auto result = channels_[channel].read();
printf("Read from %d; %02x\n", channel, result);
return result;
} }
template <int channel> void write(uint8_t value) { template <int channel> void write(uint8_t value) {
@ -41,6 +43,8 @@ class PIT {
return; return;
} }
printf("Set mode on %d\n", channel_id);
Channel &channel = channels_[channel_id]; Channel &channel = channels_[channel_id];
channel.is_bcd = value & 1; channel.is_bcd = value & 1;
@ -60,10 +64,12 @@ class PIT {
case 7: channel.mode = OperatingMode::SquareWaveGenerator; break; case 7: channel.mode = OperatingMode::SquareWaveGenerator; break;
} }
printf("%d switches to mode %d\n", channel_id, int(channel.mode));
// Set up operating mode. // Set up operating mode.
switch(channel.mode) { switch(channel.mode) {
default:
printf("%d switches to unimplemented mode %d\n", channel_id, int(channel.mode));
break;
case OperatingMode::InterruptOnTerminalCount: case OperatingMode::InterruptOnTerminalCount:
channel.output = false; channel.output = false;
channel.awaiting_reload = true; channel.awaiting_reload = true;