[comp.sys.atari.st] here's a soldered upgrade to 2.5 meg

hcj@lzaz.ATT.COM (HC Johnson) (07/10/89)

This is uuencoded, arc of text.
Please don't waste net bandwidth flaming me about posting an arc.

This is a Shareware presentation of upgrading a 1040 or 512 to 2.5 meg.
It contains a description of the 256K and 1meg chips as well.  It should
also be simple to use this as a way to upgrade a 512 to 1 meg.

Howard C. Johnson
ATT Bell Labs
att!lzaz!hcj
hcj@lzaz.att.com

=========cut here, of course. =====================
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end

ralph@nastassia.laas.fr (Ralph P. Sobek) (07/25/89)

In article <673@lzaz.ATT.COM> hcj@lzaz.ATT.COM (HC Johnson) posted
some Shareware documentation by Barry Orlando:
|  
|  This is a Shareware presentation of upgrading a 1040 or 512 to 2.5 meg.
|  It contains a description of the 256K and 1meg chips as well.  It should
|  also be simple to use this as a way to upgrade a 512 to 1 meg.

I have already seen this file in one of the online ST magazines.  Has
anybody tried this method of piggybacking the chips?  Did you succeed?
Also, can any of you hardware types comment on the design, etc.?

For those that have not yet uud'ed and dearc'ed it here's an
interesting tidbit:

|| All registered users will be sent a free utility disk which includes a
|| program to test the new RAM and instructions on how to further modify the
|| computer to a full 4 megabytes.

Either e-mail me or post followups.  I'll summarize if I get anything
interesting.  Thanks to all.

Ralph P. Sobek			  Disclaimer: The above ruminations are my own.
ralph@laas.laas.fr			   Addresses are ordered by importance.
ralph@laas.uucp, or ...!uunet!mcvax!laas!ralph		If all else fails, try:
SOBEK@FRMOP11.BITNET				      sobek@eclair.Berkeley.EDU
===============================================================================
Upon the instruments of death the sunlight brightly gleams.   --   King Crimson