Re: TI-H: Replacing Capacitorr with Crystal?

To: ti-hardware@lists.ticalc.org
Subject: Re: TI-H: Replacing Capacitorr with Crystal?
From: Bryan Rittmeyer <bryanr@flash.net>
Date: Thu, 09 Jul 1998 15:01:00 -0400
Delivered-To: ti-hardware-outgoing@towerguard.unix.edu.sollentuna.se
References: <fc.000f62d1000ff8083b9aca00d5b1f95b.ff809@pinecrest.edu>
Reply-To: ti-hardware@lists.ticalc.org

Well, the TI and I2C high level protocols are different...
but every time the I2C driver made one of the link port lines go
low the E2 firmware would assume that it is trying to send a TI
protocol bit. There is no easy way to have both I2C and TI protocol
devices on the same link port at the same time without them interfering.

The TI protocol is supported by all of the TI calculators, including
the TI-92 and is therefore the most viable way to ensure compatability
with all of the TI graphing calcs.

David Norelid wrote:
> 
> couldn't you just get an I2C clock, write a TSR driver using the mbus
> routines and mount it internally? You could do that without worrying about
> other linkport devices because the I2C and the TI protocols are different.
> I think i know what i'm talking about, but then again i most likely have
> underextimated the task.
> 
> FUZZ
> I Don't See Why Not
> -------------------------
> weirdal.home.ml.org

-- 
Bryan Rittmeyer
mailto:bryanr@flash.net
http://www.flash.net/~bryanr/

References:

Re(2): TI-H: Replacing Capacitorr with Crystal?

From: fuzz@pinecrest.edu (David Norelid)

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