MEGA65 / mega65-core

MEGA65 FPGA core
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Disc change bug in 911001 #261

Closed adtbm closed 4 years ago

adtbm commented 4 years ago

Snoopy in Forum64 found an interesting bug. and he is experimenting with it here: [https://www.forum64.de/index.php?thread/103179-disc-change-bug-in-c65-rom/] When swapping images the number of free blocks remains the same

This bug only happens on the real MEGA65 when swapping images NOT when swapping real floppy discs.

Snoopy patched the 911001 ROM, this results, that the image swapping bug is gone, but now there are problems accessing the real floppy drive.

So i am not sure, if Snoopys patch is OK and there is something wrong with the real drive implementation or if it is something else

adtbm commented 4 years ago

i added this comment to #234