Hi Mia, you are able to exchange 6523 and 6525 if extended features of the 6525 like IRQ not needed. In the 1551 Floppy is a 6523 or a 6525... I think in the 8088 board are both ok. Christian ----- greets Christian -- Sent from: http://cbm-hackers.2304266.n4.nabble.com/Received on 2018-03-26 10:00:02
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