Re: TI-H: good thing for mem expander

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Re: TI-H: good thing for mem expander


Just use the I2C 8-bit parallel interface chip. You interface it by 
emulating I2C, compatible with the MBUS network, and you have a full 8 
I/O lines! Connect two and set each to a different address and you have 
16 I/O lines! That's enough lines to connect 4 Flash memory chips! 
that's 2 Megs! one will do a full Megabyte with 2 chips!!! The I2C chip 
is also cheap, probably under $5-10 bucks!!!

BASIC Stamp's only good quality is it's simple BASIC language. I'd stick 
witht the AVR. If you need more pins, maybe it would even be possible to 
connect the I2C chip to the AVR and emulate the I2C protocol with the 
AVR. Otherwise, just use the calc to control as many I2C chips as can be 
interfaced!

Richard Piotter
richfiles1@hotmail.com



>
>Basic stamps are expensive. They are designed to run robots
>(at least as far as I know). Some of them you have to build
>yourself. The only major thing I could see us doing is using
>the 2 pins on the link port to connect to 2 I/O pins on the
>stamp. That would leave at least 6 I/O pins for led flashers
>or what ever else. And we would be able to do more
>interesting things with the 6 pins than 2.
>
>---------------------------------------
>Michael Cook
>
>MBCook@MBCook.com (website related)
>MBCook@Concentric.net (general)
>Digi02@aol.com (checked once per month)
>---------------------------------------
>www.MBCook.com (Main Site)
>www.MBCook.com/netsmart.html (NetSmart Homepage)
>---------------------------------------
>I pledge allegiance to the compatibles of IBM, and to the
>developers for which it stands, one platform, under Bill,
>indestructible, with peripherals and multimedia for all.
>
>
>-----Original Message-----
>From: KrazyJolt@aol.com <KrazyJolt@aol.com>
>To: ti-hardware@lists.ticalc.org
><ti-hardware@lists.ticalc.org>
>Date: Sunday, February 08, 1998 5:10 PM
>Subject: TI-H: good thing for mem expander
>
>
>>
>>i was looking on the radio shack page and i saw something
>called the BASIC
>>stamp
>>
>>it runs with some sort of basic programing input/output
>>256k eeprom (not attached)
>>only one problem..  It's expensive!
>>something like $80 for the board, the software, the link
>and some projects
>>
>


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