Archived from groups: rec.games.video.arcade.collecting,rec.games.video.arcade.marketplace (
More info?)
I don't believe this is the same hack, and to be honest, I didn't mod this
board, I got it this way. I will try and document it tonight if I get a
chance though.
Rob
<mikesarcade@comcast.net> wrote in message
news:1115238908.921001.188980@z14g2000cwz.googlegroups.com...
> The speed-up can be achieved with a daughter board or from a hack.
>
> For the hack:
> A simple modification allows you to select a faster speed for your
> Asteroids game. This will provide more challenge for those locations
> where the skill level is high.
>
>
> You will need some 30 gauge wire and a switch.
>
>
> 1. Clip and lift pin 4 of C5 (74LS161)
> 2. Wire switch as follows:
> * Common to lifted pin 4
> * Normally closed to pad where pin 4 used to be connected
> * normally open to pull up resistor next to C5
>
>
> NOTE:
> 1. Be sure you wire the end of the pull-up resistor *not* tied to +5V.
>
> 2. Clipping any other pins besides pin 4 may have adverse effects on
> Audio, Video, and/or coin discrimination.
>
>
>
> Mike Fox
> Algonquin, IL
> mikesarcade_at_comcast_dot_net
>
>
>
> rgvac_j...@mgcap.com wrote:
>> Any chance you would like to document that speed-up hack?
>>
>>
>>
>> tm
>
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