Re: TI-H: TI-85 disk drive

To: ti-hardware@lists.ticalc.org
Subject: Re: TI-H: TI-85 disk drive
From: gussie@alaska.net (Grant Stockly)
Date: Wed, 29 Apr 1998 19:56:21 -0700
Delivered-To: ti-hardware-outgoing@towerguard.unix.edu.sollentuna.se
Reply-To: ti-hardware@lists.ticalc.org


It woudl go at about 1200bps...  :)  Thats about 7x slower than a standard
link.  The EII (mels model) will transfer at speeds reaching 5k and
transfer backups at 1.2k...

I've decided to do what mel was going to do orrigionally...  Out of the
hundreds of people that e-mailed me, bakckups were important...
Orrigionally, there will only be support for 85 backups...

I think that I've finally have a good pdf file <g> I will start the
communication routines...  Other than that, I can use the existing code
from my serial port driver...  Then you can have a modem attached to your
calculator and use EII memory!  :)

I think you may be able to get an EII by sunday...

I'm starting a new campaign...  If I receive 40 different e-mails from 40
different people then I'll start on it tomorow instead of friday...  ;)
not jokeing...  :|

>>
>>   I'm working on a tape drive for my ti-85.  I've got most of the big
>>problems solved but it would be very helpfull if anyone had or knew of a
>>highly deatailed source of information on the TI-85 and possibly 92 link
>>port use, in assembly (what else).  Basicaly I switches the link port on
>>and off very fast to produce a "beep" at determined pace. Then it when
>>reading it detects the beeps as the line going +5 volts (note: This take
>>some simple hardware between the calc and the tape drive.  Also is anyone
>>knows how to CREATE files using assmebly (asm string files in particular)
>>PLEASE send me you method I'm desparte to know how.  Whell thank alot for
>>you time.
>>       Jim     (jofc@pacifier.com)
>
>my opinion: Waste of Time! if you do get it working, won't it be
>incredibly slow??
>
>two better ideas:
>
>EEPROM or something that would work just as good, internaly or in a small
>plug-in cartrige. I think Mike Jan was working on some internal thing like
>that.
>
>try and get as much info as you can on disk drives from TOSHIBA or IBM and
>get one of thos 3 1/4 disk drives from a laptop that are half as thick as
>desktop ones and build yourself a little plug-in setup. I found out that
>old "TANDY model 3"s are Z80 based and have two 5 1/4 disk drives that
>have driver boards on them. that probly won't help any, but it's
>interesting to know. anyway, TOSHIBA can probly help.
>
>-captain worthless (Joe Wozniak)
>"the guy trying to steal my tires got ran over by the guy trying to steal
>my car"
>
>
>
>Join 18 million Eudora users by signing up for a free Eudora Web-Mail
>account at http://www.eudoramail.com

Follow-Ups:

TI-H: START THE EII!!!! (:

From: Richard Piotter <richfile@prairie.lakes.com>