Date: 2006-10-03 07:48:24
Hallo Bill, > >So it seems something on one of the boards died :( I did some more tests. I took this particular main board MB, placed it on top of the controller board CB and formatted the miniscribe. No result at the end but.... Putting the working MB in place again I got a directory except that the header was messed up. So it seems that the databus towards the CB is damaged. It is not a matter of a broken bit, I think. But I have a bit more confidence to be able to repair it. (But what caused the damage during the formatting process ?????) I also had a board with a LED flashing once. Just before going to bed the idea hit me that the 90x0 uses the onboard RAM of one of the 6532's as ZP-RAM. Swapped it with another board with four flashes (2114 RAM problem) and.... BINGO, no flashes! Will test it this evening. The 5th MB powers up normally but after any disk operation says 'controller board error'. For André: Did you mention connecting a SCSI drive to these MB's? And do have some links to information about this SASI interface? The reason I ask is that I think I only have one working CB and IMHO repairing the other will be a though job. One idea I have is using your SCSI idea, another is replacing the CB with a micro-controller and a IDE drive. TIA! -- ___ / __|__ / / |_/ Groetjes, Ruud \ \__|_\ \___| URL: Ruud.C64.org De informatie in dit e-mailbericht is vertrouwelijk en uitsluitend bestemd voor de geadresseerde. Wanneer u dit bericht per abuis ontvangt, verzoeken wij u contact op te nemen met de afzender per kerende e-mail. Verder verzoeken wij u in dat geval dit e-mailbericht te vernietigen en de inhoud ervan aan niemand openbaar te maken. Wij aanvaarden geen aansprakelijkheid voor onjuiste, onvolledige dan wel ontijdige overbrenging van de inhoud van een verzonden e-mailbericht, noch voor daarbij overgebrachte virussen. Stichting Pensioenfonds ABP is gevestigd te Heerlen en ingeschreven bij de Kamer van Koophandel Zuid Limburg onder nummer 41074000 The information contained in this e-mail is confidential and may be privileged. It may be read, copied and used only by the intended recipient. If you have received it in error, please contact the sender immediately by return e-mail; please delete in this case the e-mail and do not disclose its contents to any person. We don't accept liability for any errors, omissions, delays of receipt or viruses in the contents of this message which arise as a result of e-mail transmission. Stichting Pensioenfonds ABP, having its registered office at Heerlen, is registered in the Traderegister of the Chamber of Commerce Zuid Limburg (Maastricht), the Netherlands, registration number: 41074000 Message was sent through the cbm-hackers mailing list
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