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From: leo@sunybcs.UUCP (Leo Wilson)
Newsgroups: net.micro.atari16
Subject: Memory Upgrade Plea
Message-ID: <905@sunybcs.UUCP>
Date: Fri, 12-Sep-86 00:33:27 EDT
Article-I.D.: sunybcs.905
Posted: Fri Sep 12 00:33:27 1986
Date-Received: Sat, 13-Sep-86 06:16:28 EDT
Reply-To: leo@sunybcs.UUCP (Leo Wilson)
Distribution: world
Organization: guest at SUNY/Buffalo Computer Science
Lines: 32


To expand upon my posting of a few days ago, I need some pointers
from someone knowlegable about the 1Mb upgrade for the ST. I installed
mine using the instructions posted by Joe Augenbraun (augenbra@MICRO.UDEL.EDU)
in early april.

The problem is that my ST doesn't seem to recognize bank 1 as being there,
though it does still boot & recognize bank 0 .  A little added info: I
used Hitachi HM50256 chips & wire wound 68k resistors. My board is a rev. B
board. (I should say "boards" as I also did the machine at work with
an identical lack of results.)

Some PD stuff I have that might help me are a PD freeram accesory (that tells
me I have 340k or so of free ram), a couple of programs that reconfigure
the system to 1Mb or 1/2Mb (probably by setting phystop & other variables),
and a memory test program that says it's testing 1 Mb & lists addresses
it checks as being between ~160k & 522k.

Disk copies happen in one buffer, even when using the 410k format & filling
the disk to capacity, but other than that it appears as though the upper
memory doesn't exist. When I run the memtest for hours I get no errors,
probably because it just isn't testing bank 1 at all. When I run the program
to reconfigure to 1Mb I get a screen full of vertical lines just wide enough
to fit the 36 bombs (NOT mushrooms) in.
Can anyone venture a guess at what I'm doing wrong, or point me towards a
PD memory worm?

Thanks much,	-Leo
------------------------------------------------
Leo E. Wilson(leo@buffalo.csnet)
(716)883-7573
UUCP:...![bbncca,decvax,dual,rocksanne,rocksvax,watmath]!sunybcs!leo