[Techtoolslist] 9010 ram pattern error?

[Tony Jones]

The overview of what the tester is doing in the pattern test is on that
page of the manual.  For the reported failing address (long should report
this as well as the BTS discrepancy) what is reported for short, or manual
write/read?

On Apr 2, 2017 7:48 PM, "David Shoemaker" <davids at oz.net> wrote:

Looping results in an unstable OK / Err condition.

-----Original Message-----
From: Techtoolslist [mailto:techtoolslist-bounces at flippers.com] On Behalf Of
Tony Jones
Sent: Sunday, April 2, 2017 6:34 PM
To: Technical Tools Mail List <techtoolslist at flippers.com>
Subject: Re: [Techtoolslist] 9010 ram pattern error?

On Sun, Apr 2, 2017 at 5:46 PM, David Shoemaker <davids at oz.net> wrote:
> I have never been able to wrap my head around the pattern error.

The long test is looking for pattern sensitive errors (nearest neighbor).

What happens if you LOOP (see 4H-11 in the operators manual).

I've seen similar on a (non arcade) board with a bad bus transceiver but it
can also indicate a fault in the RAM itself.
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