Date: Tue, 04 Jun 1996 10:06:03 -0700 From: "Michael L. VanLoon -- HeadCandy.com" <michaelv@HeadCandy.com> To: "Brett Glass" <Brett_Glass@ccgate.infoworld.com> Cc: freebsd-hardware@freebsd.org Subject: Re: Hayes ESP Message-ID: <199606041706.KAA22687@MindBender.HeadCandy.com> In-Reply-To: Your message of Tue, 04 Jun 96 10:34:01 -0800. <9605048339.AA833906331@ccgate.infoworld.com>
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>> Does the FreeBSD serial driver have any explicit support for the Hayes
>> ESP card?
>I'd be interested in knowing this as well. There are actually TWO such
>cards -- the "old" ESP and the current one. And Multi-Tech has a similar
>card. I believe all three have DMA modes.
If the FreeBSD driver is truly patterned after the NetBSD driver,
which I believe it is, then the version 1 cards are ignored, and
treated as standard 16550s, if I remember right. The version 1 cards
were really pretty bogus from what I understand -- they would only
support speeds up to 57600, and had some other weird limitations.
All the Hayes ESP cards I have personally seen are version 2,
including both of the cards I own. Practical Peripherals also makes a
similar card -- I believe theirs may actually be an ESP repackaged, or
at least have a Hayes chip on them (merely educated guesses -- I've
never actually seen the PP card).
So, the answer is: I know the NetBSD driver works since I've used it
for months. Someone else claimed the FreeBSD driver works with his
ESP just fine. Mine are version 2, and I assume his are as well. I
haven't heard of anyone actually running either of these drivers on a
non-Hayes "ESP-like" card, so I can't vouch for how well they'd work.
At worst, they'd just get treated like a normal 16550.
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Michael L. VanLoon michaelv@HeadCandy.com
--< Free your mind and your machine -- NetBSD free un*x >--
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