RE: Question for parts locating gurus: Tempest

From: Todd Miller <Todd.Miller_at_telethinking.com>
Date: Mon Nov 09 1998 - 13:57:39 EST

Mouser has the 12.096's, but if you can sub a 12.0...

Who has the CPU's 68B09EP (?) I could use a few
to complete a spare SW PCB set.

From what I remember it has to be 1.5 Mhz
w/external clock ? I had ordered 6809's from
BGI but they were only 1 Mhz and wouldn't work.

Todd Miller, IT Operations Dept.
Ron Weber and Associates
103 E. State Street, Mason City, IA 50401
(515)423-4293/(515)423-4594 FAX
http://www.telethinking.com

> 12.096 crystal
>
        I usually just use 12MHz. A whole lot easier to find, and I
doubt
        anyone could tell the difference in speed.

> MC1495
>
        I have these, but I charge $2.50 a pop for 'em. They can be had
from
        Hamilton Hallmark (or was it Arrow?) for $1.25 each plus
shipping and
        minimums.

> ER2055 (Tempest EEPROM)
>
        Rare. I usually just look on old PCB's and get lucky once in a
while
        finding one... Should probably make a replacement for these...
I think
        Centipede and Millipede might have used them as well.

> 4015 (RAM I think; not for Tempest)
>
        Huh. What's it off of? A 4015 is a CMOS shift register or
something I
        think. Maybe it's a 2015 or 2115 equivalent?

> 6502A CPU
>
        JDR should have those for about $4 a pop plus shipping. I've
got a
        bunch of CMOS ones for $5 each. (Tested on Space Duel-- work
fine)

        -Clay
Received on Mon Nov 9 13:02:55 1998

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