Thanks Christian, thanks Wolfgang - that's great news. I'll dig an old 4040 out of the attic tomorrow. Rob On 16/09/2012 23:37, Wolfgang Moser wrote: > Hello Rob and Christian, > > yes, within the SFD's daugtherboard every CBM floppy drive RRIOT (6530) > can be used as a replacement. This is because the address decoder logic > is programmed the very same for all of Commodores CBM series floppy disk > drives. > > If someone gets a hand on some superfluous such dautherboards, he might > be able to repair even other CBM floppies, not only SFD ones. ALl that > needs to be done is to place the correct ROM contents into the > additional ROM. > > > Womo > > Christian Dirks schrieb: >> Hi Rob, >> AFAIK any RRIOT from another CBM drive can be used with the daughterboard. >> >> Christian >> >> >> Am 16.09.2012 21:00, schrieb Rob Clarke: >>> Good evening Gentlemen, >>> >>> Tonights mini-project is repairing a second SFD-1001 which I've had on >>> the 'to-do' list for 18 months now. The problem was quickly tracked to >>> a failed RIOT chip. As this sits on a daughterboard with the external >>> ROM, can any RRIOT chip from a CBM IEEE drive be used as a replacement? >>> >>> My understanding was that there were other aspects of the chip which >>> were mask programmable to determine where the RAM and ROM were located >>> in the address space, but were these ever different across the IEEE >>> RRIOT chips? >>> >>> Cheers, >>> >>> Rob >>> >>> Message was sent through the cbm-hackers mailing list >> Message was sent through the cbm-hackers mailing listReceived on 2012-09-16 23:00:30
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