Re: Another Major Havoc Q [interesting]

Actually, I believe that there were two versions:

Dedicated conversion
Y1=12MHz Y1=10MHz
Y2=10MHz Y2= 8MHz
10 pin edge 12 pin edge connector

Also the integration capacitors are DIFFERENT depending on the Y1 clock.
If you change Y1 to a higher frequency, You will need to change the
integration capacitor (larger).

It's my understanding that the slower Y1 was for use on the slower WG XY
monitors found in Tempest/SD.

I have both version, so it's probably ok to leave it as it is.

-Scott

At 06:03 PM 12/2/99 -0800, John Robertson wrote:
>Replace the crystal with the factory designated one. Things will not time
>correctly...
>
>John :-#)#
>
>At 06:20 PM 12/2/1999 -0600, you wrote:
>>Here's one for you.
>>
>>I noticed that the crystals on the board were re soldered in.
>>Crystal Y1 = 10.000mhz
>>Crystal Y2 = 8.000mhz
>>
>>But the manual says Y2 should be 12.096mhz.
>>Is this the one the pokeys feed off of? (And the gamma CPU?)
>
>
> John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9
> Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video Games)
> http://www.flippers.com
> "Old pinballers never die, they just flip out."
>

--
Scott Swazey                QUALCOMM Incorporated Work: (858) 657-2419
mailto:sswazey@qualcomm.com V-213G                Pager:(858) 683-5210