Re: question

Clay Cowgill wrote:

> You can speed things up by switching the main crystal on the game PCB. How
> fast you can make it go depends on the monitor though.
>
> I think "stock" dedicated boards were 12.096MHz. I've seen conversions
> with 8MHz crystals on them. Anyone know for sure what's right? If your
> crystal is 8MHz try replacing it with a 10MHz and see if everything still
> looks right. It will affect the gameplay a little.

You have to replace both the crystals on the board though, if you only
do one it will throw the
processor communication off and you can get the Main CPU to sometimes
reset the slave.
 Original Crystals in Dedicated Major Havoc (amplifone monitor)
           Y1 12.096 MHz
           Y2 10.000 MHz

 Conversion Board for Tempest/Gravitar/Space Duel (WG monitor)
        Y1 8.9687 MHz
        Y2 8.000 MHz

Having the faster crystals will also make the game ALOT faster in the
higher levels, fast enough
to make them almost impossible. It also raises the pitch of the music of
course.
   jess

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