Re: TI-H: RAM expansion (sort of)

To: ti-hardware@lists.ticalc.org
Subject: Re: TI-H: RAM expansion (sort of)
From: Grant Stockly <gussie@alaska.net>
Date: Sun, 16 Aug 1998 20:17:20 -0800 (AKDT)
Delivered-To: ti-hardware-outgoing@towerguard.unix.edu.sollentuna.se
In-Reply-To: <19980813145545.15398.qmail@hotmail.com>
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.

I posted that link months ago for info on using 164/5s on building an I/O
expander...

References:

TI-H: RAM expansion (sort of)

From: "Matt Butch" <mjb25@hotmail.com>

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