Re: TI-H: good thing for mem expander

To: ti-hardware@lists.ticalc.org
Subject: Re: TI-H: good thing for mem expander
From: "Osma Suominen" <ozone@clinet.fi>
Date: 8 Feb 1998 23:57:47 -0000
In-Reply-To: <001201bd34e3$e2c7b000$8ace9bcf@Cook>
Reply-To: ti-hardware@lists.ticalc.org

Michael Cook wrote:

> 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.

There's not much need for that, as the PCF8574 I2C chip gives us 8 I/O pins
instead of 2, and up to 16 of them can be easily connected to the same link
port. 128 I/O pins should be enough for anyone. And they're much cheaper
than $80 apiece.

-Ozone

-- 
*** Osma Suominen *** ozone@clinet.fi *** http://www.clinet.fi/~ozone ***

References:

Re: TI-H: good thing for mem expander

From: "Michael Cook" <MBCook@concentric.net>

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