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Uses GI::AY38910::Utility far and wide.

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This commit is contained in:
Thomas Harte
2021-03-26 23:19:47 -04:00
parent 53ba0e67d1
commit 8a11a5832c
6 changed files with 20 additions and 42 deletions
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Machines/Atari/ST/AtariST.cpp
+2 -9
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@@ -347,18 +347,11 @@ class ConcreteMachine:
update_audio();
if(cycle.operation & Microcycle::Read) {
ay_.set_control_lines(GI::AY38910::ControlLines(GI::AY38910::BC2 | GI::AY38910::BC1));
cycle.set_value8_high(ay_.get_data_output());
ay_.set_control_lines(GI::AY38910::ControlLines(0));
cycle.set_value8_high(GI::AY38910::Utility::read(ay_));
} else {
// Net effect here: addresses with bit 1 set write to a register,
// addresses with bit 1 clear select a register.
ay_.set_control_lines(GI::AY38910::ControlLines(
GI::AY38910::BC2 | GI::AY38910::BDIR
| ((address&2) ? 0 : GI::AY38910::BC1)
));
ay_.set_data_input(cycle.value8_high());
ay_.set_control_lines(GI::AY38910::ControlLines(0));
GI::AY38910::Utility::write(ay_, address&2, cycle.value8_high());
}
return delay + HalfCycles(2);