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: Suitable serial card for H/S modem
Message-ID: <3808.27c85370@hayes.uucp>
Date: 24 Feb 91 23:59:44 GMT
References: <6553@khaki8.UUCP> <12646@darkstar.ucsc.edu> <3801.27c53c7e@hayes.uucp> <1991Feb23.205152.6294@rfengr.com>
Organization: Hayes Microcomputer Products, Norcross, GA
Lines: 40

In article <1991Feb23.205152.6294@rfengr.com>, rfarris@rfengr.com
(Rick Farris) writes: 

>> We never said ESP was for everybody, but if you need it, it's there!
> 
> Who is it for, Toby?  Personally, I'm looking for a smart card to
> enable me to run full-speed downloads (~1700 cps) from within Windows
> 3.0.  Is the ESP card the solution?

With its automatic hardware protection against data loss due to 
FIFO overrun, ESP does indeed solve most problems associated with 
downloads within Windows.

> I've spoken to other multi-port board manufacturers, and none of them
> will admit to having Windows drivers.  If the ESP looks like regular
> serial ports it might be just what I need.

Not only does ESP look like "regular serial ports" if you want to 
use it with existing software, it also has a DMA Enhanced mode that 
dramatically cuts the number of interrupts that have to be processed 
to handle serial data.  Up to 1K bytes can be transferred 
automatically on each CPU interrupt, instead of 1 to 16 characters 
as with a 16550A alone.  The Hayes ESI Driver for Windows uses the 
DMA Enhanced mode of ESP; this driver is in beta-test now, and will 
be shipping very soon.

> Is it in national distribution?

Yes; ESP is available through any computer store.  If they don't 
have it in stock, they can get it in a few days through their normal 
distribution source for Hayes products.

[Sorry if this message sounds overly "salesy", folks!  I'll try to 
contain my enthusiasm from now on...]

-- 
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