RE: Asteroids Deluxe PCB - won't save high scores

From: Noel Johnson <nej2001_at_my-deja.com>
Date: Fri Jan 05 2001 - 17:36:36 EST

('binary' encoding is not supported, stored as-is) I believe Chris Loggans was selling the ER2055's at a reasonable price, if that helps..

Noel

>From: "Simon Whittam" <swhittam@nortelnetworks.com>
>To: vectorlist@synthcom.com
>Subject: RE: VECTOR: Asteroids Deluxe PCB - won't save high scores
>Date: Fri, 5 Jan 2001 16:56:58 -0500
>Reply-To: vectorlist@synthcom.com
>
>If the -28V is not there, test the 555 timer. I've had
>problems with those (and the EAROM).
>
>Potential issues:
>
>1) EAROM bad?
>2) -28V not here?
>3) 555 timer not working?
>4) socket for EAROM - bad connectivity?
>5) broken parts around the 555 timer (caps, resistors, diodes etc)?
>
>Also check www.deja.com and the vector archives
>http://www.arlo.net/vectorlist/
>for more possible leads on how to fix this problem and/or others. This has
>been
>covered on lots of games using this Atari HS scheme.
>
>SPW
>kanata, on
>canada
>
>-----Original Message-----
>From: FBowen@checkfree.com [mailto:FBowen@checkfree.com]
>Sent: Friday, January 05, 2001 4:36 PM
>To: vectorlist@synthcom.com
>Subject: Re: VECTOR: Asteroids Deluxe PCB - won't save high scores
>
>
>
>The schematic is on the bottom right of
>http://www.spies.com/arcade/schematics/atari/AstDlx1B.TIFF
>
>My guesses would be that your EAROM is dead (they didn't have very many
>write cycles) or that the circuit to generate the -30 no longer works
>(replace the caps?).
>
>
>
>HI!
>
>I've got another question I wanted to ask. My AD board won't save the top
>3 high scores. What is the fix ? Where and what chip is responsible? Is
>it a battery-backed up SRAM or something ?
>
>
>Thanks again !
>
>Steve
>
><< msg2.html >>

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Received on Fri Jan 5 18:00:56 2001