RE: Asteroids replacement crystals.

You can lay them on their side on a piece of double-faced foam - I do that
for every one that I replace - the foam tape must be thick enough to
insulate the crystal can from the components underneath. The shorter can is
the perfect solution and when I run out of the bunch I have, I will hunt for
the shorter can ones.

Bill

  _____

From: owner-vectorlist@vectorlist.org
[mailto:owner-vectorlist@vectorlist.org] On Behalf Of Kevin Moore
Sent: Monday, November 30, 2009 7:01 PM
To: vectorlist@vectorlist.org
Subject: Re: VECTOR: Asteroids replacement crystals.

Well my major thing was to find a shorter one. Since there's not enough room
to lay them down with out them hitting the cab when sliding the board in. SO
the ones at DK will work for World Records, and be short enough not to get
whacked off.

Nice thing about Digikey, is normal snail mail stuff get's to me in a day.

Kevin

On Mon, Nov 30, 2009 at 6:41 PM, Swazey, Scott <sswazey@qualcomm.com> wrote:

Yes. There were two different cyrstals. But if you changed them, you had to
change the integration capacitors on the DACs too

-Scott

Sent from my iPhone

On Nov 30, 2009, at 3:50 PM, "Clay Cowgill" <c.cowgill@comcast.net> wrote:

Hey... That just tickled a long forgotten memory... Didn't Major Havoc use
two different crystals depending on if it was a kit or dedicated? (12MHz
vs. 10MHz?) Or am I totally making that up? ;-)

-Clay

  _____

From: owner-vectorlist@vectorlist.org
[mailto:owner-vectorlist@vectorlist.org] On Behalf Of Bill
Sent: Monday, November 30, 2009 2:57 PM
To: <mailto:vectorlist@vectorlist.org> vectorlist@vectorlist.org
Subject: RE: VECTOR: Asteroids replacement crystals.

5% of 12,096,000 =604,800. So if the 12.096 MHz crystal was in spec at +/-
5% it could be less than 12MHz. Unless you are going for the world record
on the board the 12MHz crystals will be fine. I've used both for years with
no problems. I've even accidently used a 10Mhz crystal - the game worked
but the sounds were slower which gave it away.

Bill

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Received on Mon Nov 30 21:05:53 2009