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Re: SSC Failure - odd symptoms

Subject: Re: SSC Failure - odd symptoms
From: "Michael J. Mahon" <mjmahon@aol.com>
Date: Fri, 21 Aug 2009 12:44:02 -0700
In-reply-to: <7f85v8F2joig1U1@mid.individual.net>
Newsgroups: comp.sys.apple2
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Patrick Schaefer wrote:

In case you have a contact problem in the slot connector, as mentionedelsewhere, the data read from the firmware EPROM would be corrupt aswell. If both $C200 and $C800 ranges look normal (the listing is in themanual), your address and data lines are fine.


A bad contact on the /DEVSEL line or R/W line, for example, would allow
the ROM to be read fine, but prevent the UART from working.

-michael

NadaNet 3.0 for Apple II parallel computing!
Home page:  http://home.comcast.net/~mjmahon/

"The wastebasket is our most important design
tool--and it's seriously underused."

References:
- SSC Failure - odd symptoms
  - From: Zero dB <no@email.com>
- Re: SSC Failure - odd symptoms
  - From: Patrick Schaefer <pa.schaefer@web.de>
- Re: SSC Failure - odd symptoms
  - From: Zero dB <no@email.com>
- Re: SSC Failure - odd symptoms
  - From: Zero dB <no@email.com>
- Re: SSC Failure - odd symptoms
  - From: Patrick Schaefer <pa.schaefer@web.de>

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