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Article #6431

Placement of TOS 1.4

#6431
From: ASQB-SEP-A HQ USAISEC
Date: Sun, 03 Dec 1989 03:53
53 lines
1676 bytes
I picked up TOS 4.1 today -- had to drive to Phoenix (I live in Tucson
and we have no ATARI dealer) to get it.

I was wondering if anyone can help me with the correct placement of
the TOS 1.4 chips?

I tried two different iterations:

      A.    L0
            L1
            L2
            H0
            H1
            H2

      B.    L0
            H0
            L1
            H1
            L2
            H2

These configurations are in a 520 ST that's been upgraded to 1M via
piggyback.

My TOS 1.0 was in the following configuration:

            --------0
            --------1
            --------2
            --------3
            --------4
            --------5


Can't remember the numbers in front, but you get the idea.

In either configuration the screen (mono) stays dark and nothing
happens.  Was just going to try a few more configs but thought I
would ask first and save the wear and tear on the pins ;-).

Thanks for the help.

Mark R

USAISEC -- the guys who have to move to the People's Republic of
            Massachusetts

Computer Systems Engineering

# All opinions are strictly mine and in no way reflect the opinions or
# policies of the US Army.
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From: asqb-sep-a@HUACHUCA-EMH2.ARMY.MIL (ASQB-SEP-A HQ USAISEC)
Newsgroups: comp.sys.atari.st
Subject: Placement of TOS 1.4
Message-ID: <8912030811.AA08915@ucbvax.Berkeley.EDU>
Date: 3 Dec 89 03:53:07 GMT
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