TI-H: RAM expansion (sort of)

TI-H: RAM expansion (sort of)

• To: ti-hardware@lists.ticalc.org
• Subject: TI-H: RAM expansion (sort of)
• From: "Matt Butch" <mjb25@hotmail.com>
• Date: Thu, 13 Aug 1998 07:55:45 PDT
• Delivered-To: ti-hardware-outgoing@towerguard.unix.edu.sollentuna.se
• Reply-To: ti-hardware@lists.ticalc.org

Has anyone seen the RAM/IO expander on Mel's website, the one with the 
74LSXXX TTL logic IC's??  Well last night I got the parts need to make 
it(plus some Z80s!!) and am going to breadboard it tonight(with some 
modifications).  I also have to make the driver software, but that will 
be easy.  I;m going to use 3 32KBx8 Static RAM chips(That's 96KB of RAM, 
plus the 28K already on the 85!! Whoohoo!!!).  Next I'm going to make an 
(E)EPROM program for it so that I can burn them w/o getting an $150 
programmer.  For those interested, here's the address to the page:
http://www.egr.msu.edu/~tsaimelv/download.htm
download the zip file exp_old.zip.  It has all the info needed.


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• Re: TI-H: RAM expansion (sort of)
• From: tsaimelv@pilot.msu.edu (Mel Tsai)
• Re: TI-H: RAM expansion (sort of)
• From: larry1492@juno.com (Larry G Currie)
• Re: TI-H: RAM expansion (sort of)
• From: Grant Stockly <gussie@alaska.net>

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