Re: TI-H: Expander to Computer program

To: ti-hardware@lists.ticalc.org
Subject: Re: TI-H: Expander to Computer program
From: Grant Stockly <gussie@alaska.net>
Date: Sun, 30 Aug 1998 16:47:44 -0800 (AKDT)
Delivered-To: ti-hardware-outgoing@towerguard.unix.edu.sollentuna.se
In-Reply-To: <19980830230003.24188.qmail@hotmail.com>
Reply-To: ti-hardware@lists.ticalc.org


>>No need for [a protocol document].  Bryan already released the
>>driver.
>
>Fine, where can I get it?

This was boreing.  I hope you like it.  Bryan has commented his source sooo
well that this was boreing.  :/

-----
Receiving a page of Data from the "EII":

1.  Send 0x52
2.  Send Page address high byte
3.  Send Page address low byte
4.  Send location in page to start - =<255
5.  Is [number of bytes to receive] over 255?

No:	1.  Send [number of bytes to receive] Low byte
	2.  Send 0x80
Yes:	1.  Send0xFF
	2.  Send [number of bytes to receive] high byte

6.  Receive [number of bytes to receive] bytes.

We're done!  :)


Sending a page of Data from the "EII":

1.  Send 0x82
2.  Send Page address high byte
3.  Send Page address low byte
4.  Send location in page to start - =<255
5.  Is [number of bytes to send] over 255?

No:	1.  Send [number of bytes to send] Low byte
	2.  Send 0x80
Yes:	1.  Send0xFF
	2.  Send [number of bytes to send] high byte

6.  Send [number of bytes to send]

We're done!  :)


Formatting a page of "EII" memory:

1.  Send 0x82
2.  Send Page address high byte
3.  Send Page address low byte
4.  Send 0x00
5.  Send 0xFF
6.  Send 0x09
7.  Send 0xFF (264 times)

We're done!  :)


Receiving the firmware version of the "EII":

1.  Send 0xFF
2.  Receive byte
3.  =< 4 is an EuP, >= 5 is an E2

References:

Re: TI-H: Expander to Computer program

From: "David Knaack" <dknaack@hotmail.com>