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bradgrantham-apple2e
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only invalidate track if drive wasn't selected before

This commit is contained in:
Brad Grantham 2021-01-02 07:53:46 -08:00
parent 3d05ad75c5
commit b908e772ef
1 changed files with 8 additions and 4 deletions
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12
apple2e.cpp
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@ -1020,14 +1020,18 @@ struct DISKIIboard : board_base
return true;
} else if(addr == SELECT) {
if(debug & DEBUG_FLOPPY) printf("floppy select first drive\n");
driveSelected = 0;
trackBytesOutOfDate = true;
if(driveSelected != 0) {
driveSelected = 0;
trackBytesOutOfDate = true;
}
data = 0;
return true;
} else if(addr == SELECT + 1) {
if(debug & DEBUG_FLOPPY) printf("floppy select second drive\n");
driveSelected = 1;
trackBytesOutOfDate = true;
if(driveSelected != 1) {
driveSelected = 1;
trackBytesOutOfDate = true;
}
data = 0;
return true;
} else if(addr == ENABLE) {