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issue #493 fix for 128D and 128DCR #494

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issue #493 fix for 128D and 128DCR #494

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53 changes: 39 additions & 14 deletions software/io/c64/keyboard_c64.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -178,23 +178,48 @@ void Keyboard_C64 :: scan(void)
shift_prev = 0xFF;
return;
}

if((shift_flag == shift_prev) && (mtrx_prev == mtrx)) { // this key was pressed before
if (delay_count == 0) {
delay_count = repeat_speed;
// do not return, store char

// Special handling for the RETURN key - make it more responsive on C128D machines
// RETURN key is in keymap_normal[1] or on specific matrix coordinates
if(key == KEY_RETURN) {
// For RETURN key, reduce the debounce delay to make it more responsive
if((shift_flag == shift_prev) && (mtrx_prev == mtrx)) {
// RETURN key was pressed before, don't wait as long for repeat
if (delay_count <= 1) { // Use a shorter threshold for RETURN key
delay_count = repeat_speed / 2; // Use half the repeat delay for RETURN
// Continue to store the key below
} else {
delay_count = delay_count - 2; // Decrease the delay counter faster
if (delay_count <= 0) {
delay_count = 0; // Prevent underflow
}
// Continue to store the key
}
} else {
delay_count = delay_count - 1;
// First time RETURN key was pressed
delay_count = first_delay / 2; // Half the initial delay for RETURN
mtrx_prev = mtrx;
shift_prev = shift_flag;
}
} else {
// Normal handling for other keys
if((shift_flag == shift_prev) && (mtrx_prev == mtrx)) { // this key was pressed before
if (delay_count == 0) {
delay_count = repeat_speed;
// do not return, store char
} else {
delay_count = delay_count - 1;
return;
}
} else if(mtrx == mtrx_prev) { // same key, but modifier changed.. ignore! (for some time)
delay_count = first_delay;
shift_prev = shift_flag;
return;
} else { // first time this key was pressed
delay_count = first_delay;
mtrx_prev = mtrx;
shift_prev = shift_flag;
}
} else if(mtrx == mtrx_prev) { // same key, but modifier changed.. ignore! (for some time)
delay_count = first_delay;
shift_prev = shift_flag;
return;
} else { // first time this key was pressed
delay_count = first_delay;
mtrx_prev = mtrx;
shift_prev = shift_flag;
}

// printf("%b ", key);
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