COPS 421 info

From: Chuck Simmons <numa_at_email.domain.hidden>
Date: Wed, 16 Aug 2000 16:41:41 -0400

Hello all,

Just wondering if anyone on the list has any information about the COPS 421 microcontroller on the I/O board. I have an I/O board that gives me boot error 52 and I have been unable to find any information on the Internet about it. Datasheets, timing diagrams, a copy of the firmware (if there is any), or any other tidbits would be most appreciated. I suspect that C36 may be bad instead of the COPS, but I haven't tested the capacitor yet. If the COPS does turn up to be the culprit, I will try to kludge an emulation of it using another microcontroller and of course make the hack available to everyone on the list as I hear this is a common problem with Lisas.

Thanks a bunch,
Chuck

• - - - - - - - - - LisaList info at <http://lowendmac.com/lists/lisalist.html> LisaList is sponsored by LowEndMac.com, MacLaunch.com, and...

MacResQ Specials: LaCie SCSI CDR From $99! PowerBook 3400/200 Only $879! Norton AntiVirus 6 Only $19! We Stock PARTS! <http://www.macresq.com>

Host your mailing list for free at Maclaunch http://www.maclaunch.com/forms/list.shtml
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
This message is sent to you because you are subscribed to LisaList.  Send list messages to <lisalist_at_email.domain.hidden>  To unsubscribe, send email to: <lisalist-off_at_email.domain.hidden>  To switch to digest mode, send email to <lisalist-digest_at_email.domain.hidden>  To switch to index mode, send email to <lisalist-index_at_email.domain.hidden>  Send administrative queries to <listmom_at_email.domain.hidden> Received on 2000-08-16 13:49:29