6502/CLK
1
0
Fork 0
mirror of https://github.com/TomHarte/CLK.git synced 2024-12-24 12:30:17 +00:00
Code Issues Projects Releases Wiki Activity

Fixed AY queuing behaviour as handled by the Amstrad. I think I need to come up with clearer semantics here.

Browse Source
This commit is contained in:
Thomas Harte 2017-08-05 09:12:17 -04:00
parent b999c1d8aa
commit b3788fed41
1 changed files with 7 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
Machines/AmstradCPC/AmstradCPC.cpp
View File

@ -108,9 +108,13 @@ class AYDeferrer {
cycles_since_update_ += half_cycles;
}
/// Enqueues an update-to-now into the AY's deferred queue.
inline void update() {
ay_->run_for(cycles_since_update_.divide_cycles(Cycles(4)));
}
/// Issues a request to the AY to perform all processing up to the current time.
inline void flush() {
ay_->run_for(cycles_since_update_.divide_cycles(Cycles(4)));
ay_->flush();
}
@ -443,6 +447,7 @@ class i8255PortHandler : public Intel::i8255::PortHandler {
switch(port) {
case 0:
// Port A is connected to the AY's data bus.
ay_.update();
ay_.ay()->set_data_input(value);
break;
case 1:
@ -628,6 +633,7 @@ class ConcreteMachine:
/// Another Z80 entry point; indicates that a partcular run request has concluded.
void flush() {
// Just flush the AY.
ay_.update()
ay_.flush();
}