Re: Apple IIGS ZipChip

[nathan@visi.com (Nathan Mates)]

In article <345E9949.4C1B@pacbell.net>,
Ron McGowan  <ronmac@pacbell.net> wrote:
>I have a IIGS with a stock zip chip that, until recently,
>would pass the GS self test, but now fails with 
>SYSTEM BAD 05012A00

   ZipGSs that *pass* the self test with switch 1-6 (zip disabler) on
are far more likely to be flakey than not. As listed in the
comp.sys.apple2 Frequently Asked Questions (FAQ) at
http://www.visi.com/~nathan/a2/faq/csa2.html section 8.10, 05xxxxxx is
"failes speed test". As I said above, if a zip passes selftests,
that's enough deviation from the norm that you'd suspect a problem. If
your system is otherwise acting fine, I wouldn't worry about selftest
errors yet.

Nathan Mates
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