Re: Asteroids speedup PCB question.

From: peter jones <highwayman2000_at_mail.ru>
Date: Wed Nov 23 2005 - 04:54:51 EST

-----Original Message-----
From: Electronicamuse@aol.com
To: vectorlist@vectorlist.org
Date: Wed, 23 Nov 2005 00:35:37 EST
Subject: VECTOR: Asteroids speedup PCB question.

>
> I am going through a stack of defective Asteroids boards and I have a few
> with the speedup mod PCB attached. These are the one with the 2 ICs and a pot.
> But, I have another board that actually replaced a TTL and has less jumper
> wires (just 2?) and several TTL and no pot, but a dipswitch. Anything
> notable about this mod?
>

i remember one that used 4 dipswitches to pre-load a value into one of the 74ls161's,
maybe thats what you have.

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Received on Wed Nov 23 04:54:52 2005

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