22 Dec
2005
22 Dec
'05
4:31 a.m.
Chuck Guzis wrote:
That's what I was working from. Have you tried
doing a read of the display
every so often (without writing) and comparing to previous reads to see if
bits are getting picked/dropped? That would settle the question of the
RAM. I'm not sure if a read/write will find all problems.
I filled RAM with a pattern that produces the flickering bits and read from it
in a constant loop for over a minute, and the RAM tests out okay (even though
something is clearly wrong).
--
Jim Leonard (trixter at oldskool.org) http://www.oldskool.org/
Want to help an ambitious games project? http://www.mobygames.com/
Or check out some trippy MindCandy at http://www.mindcandydvd.com/