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

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

• To: ti-hardware@lists.ticalc.org
• Subject: Re: TI-H: RAM expansion (sort of)
• From: tsaimelv@pilot.msu.edu (Mel Tsai)
• Date: Thu, 13 Aug 1998 22:30:14 GMT
• Delivered-To: ti-hardware-outgoing@towerguard.unix.edu.sollentuna.se
• In-Reply-To: <19980813145545.15398.qmail@hotmail.com>
• References: <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.


Heh well I really wouldn't recommend building that thing... Using a
microcontroller is 100x more efficient and has a lot better chance of
working.

-Mel

• Re: TI-H: RAM expansion (sort of)
• From: Grant Stockly <gussie@alaska.net>

• TI-H: RAM expansion (sort of)
• From: "Matt Butch" <mjb25@hotmail.com>

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