Re: TI-H: spinterface-minidisc

To: ti-hardware@lists.ticalc.org
Subject: Re: TI-H: spinterface-minidisc
From: "Ed Plese" <eplese@Lnd.com>
Date: Mon, 18 Aug 1997 21:13:54 +0000
Comments: Authenticated sender is <eplese@igs1.lnd.com>
Reply-To: ti-hardware@lists.ticalc.org

> or a ls-120 drive for it would be nice
> sort of like hp's 1.44mb disk drive for the calculators
> 
> even a 1.44mb disk drive is fine
> could it be that hard to make a disk drive for the ti
> not that i could make it
> i'm good at building but not good at making

I have been looking into interfacing to Floppy drives and it's a lot 
trickier than it may seem.  To be able to use them, the device would 
probably need as much processing power and more RAM than the TI-85 
calculator has.  But, for an easier solution, I have also been 
looking into interfacing to SIMM modules for PCs.  These are no where 
near as difficult to work with and a 4MB 30-pin module is much 
smaller than a complete floppy drive.  It's even smaller than a 
floppy disk for that matter.  These SIMMs cost about $40 and 4MB is 
about all that's needed for a calculator.  The only problem with 
these, however is that they need a battery for memory refresh.

-Ed