Path: utzoo!mnetor!tmsoft!torsqnt!lethe!yunexus!ists!helios.physics.utoronto.ca!news-server.csri.toronto.edu!bonnie.concordia.ca!uunet!hayes!tnixon
From: tnixon@hayes.uucp
Newsgroups: comp.dcom.modems
Subject: Re: T2500's and touchtones
Message-ID: <3807.27c8524f@hayes.uucp>
Date: 24 Feb 91 23:54:55 GMT
References: <1991Feb22.143956.12385@scifi.uucp> <25354@netcom.COM> <1991Feb23.204027.113648@ramona.Cary.NC.US>
Organization: Hayes Microcomputer Products, Norcross, GA
Lines: 29

In article <1991Feb23.204027.113648@ramona.Cary.NC.US>,
andrew@ramona.Cary.NC.US (Andrew Ernest) writes: 

> It would be amusing (and potentially useful, for applications like Nick's)
> if modem manufacturers started selling user-programmable models.  I'd
> imagine the firmware developers have something of this sort for developing
> the code that eventually gets burned into ROMs.
> 
> I can see it now...TB-MOS ({TrailBlazer,TeleBit}-Modem Operating System).
> And before long there'd be OOMP (Object-Oriented Modem Programming).

I'm aware of at least one modem on the market now in which both the 
DSP and main processor are controlled by loadable SOFTWARE rather 
than ROM-based FIRMWARE -- the V.32bis modem from Forval (designed 
by Intelligent Modem Corporation of Midvale, Utah).  It is a MC56000 
DSP and MC68302 controller (68000 mpu).  All of the code the runs 
on the modem can be loaded from either the local host computer (PC; 
this is an ISA-bus internal modem) or from a REMOTE HOST!  They, of 
course, don't document at all how to do this, but it's possible, it 
would seem.  The remote-loading is kind of scary, actually; it 
introduces the possibility of having a virus in your MODEM (egad!).  
But it is nice to be able to upgrade your modem's "firmware" by just 
sliding an update diskette into your PC.

-- 
Toby Nixon, Principal Engineer    | Voice   +1-404-840-9200  Telex 151243420
Hayes Microcomputer Products Inc. | Fax     +1-404-447-0178  CIS   70271,404
P.O. Box 105203                   | UUCP uunet!hayes!tnixon  AT&T    !tnixon
Atlanta, Georgia  30348  USA      | Internet       hayes!tnixon@uunet.uu.net