Yeah, the 6523 lacks the ability to use port C for handshaking and (weird) interrupt priority. http://archive.6502.org/datasheets/mos_6523_tpi_preliminary.pdf http://archive.6502.org/datasheets/mos_6525_tpi_preliminary.pdf On 26/03/2018 08:53, vossi wrote: > 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. > > ChristianReceived on 2018-03-26 12:00:03
Archive generated by hypermail 2.2.0.