RE: Star Wars/Wells Gardner 6100 Problem

Clay,

So I understand this then...is to NOT switch between the games with
the power on? I must confess, I've been doing that. When I read the
message below, the hair on the back of my neck stood straight up!!

So, is it ok to switch games with the power on or do I run the risk
of damaging my monitor?

Thanks for the info.

Regards,
Tom Cloud

From: Clay Cowgill <ClayC@diamondmm.com>
>To: "'vectorlist@mcfeeley.cc.utexas.edu'"
> <vectorlist@mcfeeley.cc.utexas.edu>
>Subject: RE: Star Wars/Wells Gardner 6100 Problem
>Date: Tue, 2 Feb 1999 17:46:03 -0800
>Reply-To: vectorlist@mcfeeley.cc.utexas.edu
>
>
>> A couple games later, he switched it back to ESB, and it still did
not
>> display video, so he switched back to Star Wars, and now that was not
>> displaying video either.
>>
>For what it's worth, this is what killed my monitor when I was *first*
>working on the kits-- hence the warning about switching with the game
>on.
>
>Clay's techy idea on what can happen:
>
>I think you can switch and still have the code land in a segment that
>refreshes the watchdog, but the vector generator crashes.
>Max-deflection for very long = dead monitor. Someday I should probably
>redesign the kit to have the bank-selection switch go into a PAL and
>then have the PAL yank reset for a few clocks after the switch changes
>states. I'd want to *really* fix those nasty old 2212 NOVRAMs at the
>same time though by replacing it with some kind of EEPROM, so the
>project gets larger and I keep putting it off...
>
>-Clay
>
>

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Received on Wed Feb 3 13:39:08 1999