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Apply changes on trailing edges only.

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This commit is contained in:
Thomas Harte 2023-12-22 18:38:43 -05:00
parent 66bc1fd6fd
commit 54f1c31c94
1 changed files with 2 additions and 2 deletions
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4
Machines/Amiga/Disk.cpp
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@ -175,8 +175,8 @@ void Chipset::DiskController::set_mtr_sel_side_dir_step(uint8_t value) {
const bool is_selected = !(value & select_mask);
// Both the motor state and the ID shifter are affected upon
// changes in drive selection only.
if(difference & select_mask) {
// the trailing edge of changes in drive selection only.
if(difference & select_mask & ~value) {
// If transitioning to inactive, shift the drive ID value;
// if transitioning to active, possibly reset the drive
// ID and definitely latch the new motor state.