Re: TI-H: Another memory expander idea.

To: ti-hardware@lists.ticalc.org
Subject: Re: TI-H: Another memory expander idea.
From: tsaimelv@pilot.msu.edu (Mel Tsai)
Date: Fri, 17 Jul 1998 22:36:05 GMT
Delivered-To: ti-hardware-outgoing@towerguard.unix.edu.sollentuna.se
In-Reply-To: <l0313030cb1d52e89be4f@[192.168.1.66]>
References: <l0313030cb1d52e89be4f@[192.168.1.66]>
Reply-To: ti-hardware@lists.ticalc.org


>>>>If we were to write a driver of sorts, would it
>>>>necessarily require an ASM shell???  Or another
>>>>option would be to write a small, non-graphical
>>>>TI-BASIC program that would basically be a link
>>>>straight to the ASM code.
>>This was brought up a while back.  The only problem is that the data would
>>need to be buffered onto a flash memory chip.  So therefor, after about
>>10,000 read/writes, you would need to replace the chip.  It may work if you
>>could do all the buffering through a PIC or AVR?  Anybody on this?
>
>Atmel *says* (They said the AVR could do 20MHz also) that their flash will
>last 1,000,000 writes.

Umm, no, that's only on their low density serial EEPROM, not higher
density flash.  Flash (no matter what the manufacturer) is still in
the 10k to 150k rewrite range.  Nonetheless Microchip has some 256
byte serial EEPROMs that allow 10,000,000 rewrites though.

-Mel
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-http://www.egr.msu.edu/~tsaimelv/expander.htm

Follow-Ups:

Re: TI-H: Another memory expander idea.

From: Grant Stockly <gussie@alaska.net>

References:

Re: TI-H: Another memory expander idea.

From: Grant Stockly <gussie@alaska.net>

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