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Adds quick notes on port FE.

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This commit is contained in:
Thomas Harte 2021-03-18 12:32:54 -04:00
parent 17f551e89d
commit b830d62850
1 changed files with 8 additions and 0 deletions
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8
Machines/Sinclair/ZXSpectrum/ZXSpectrum.cpp
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@ -118,6 +118,10 @@ template<Model model> class ConcreteMachine:
// TODO: rest of port FE.
update_audio();
audio_toggle_.set_output(*cycle.value & 0x10);
// b0–b2: border colour
// b3: enable tape input (?)
// b4: tape and speaker output
}
switch(address) {
@ -157,6 +161,10 @@ template<Model model> class ConcreteMachine:
case PartialMachineCycle::Input:
if(!(address&1)) {
// TODO: port FE.
// address b8+: mask of keyboard lines to select
// result: b0–b4: mask of keys pressed
// b6: tape input
}
switch(address) {