Subject: Re: How about to config Hayes ESP with glue device rather than magical option?
To: enami tsugutomo <email@example.com>
From: Jason Thorpe <firstname.lastname@example.org>
Date: 09/07/1997 23:15:33
On 08 Sep 1997 08:08:02 +0900
enami tsugutomo <email@example.com> wrote:
> isa0 at pcib0
> hayesesp0 at isa0 port 0x280-0x287 irq 5
> com3 at hayesesp0 port 0x3e8-0x3f0: 1024 byte fifo
Actually.... I don't understand why we have "hayesesp0 at 0x280", and
then "come3 at hayesesp0 at 0x3e8". Why the 0x3e8? What does that
> (1) `com at isa' disables FIFO when system shutdown, but `com at
> multi' doesn't. For Hayes ESP, it did since it was same as `com at
> isa', but is it actually needed? In my case, it works without it but
> since the comment says that it depends on BIOS, I can't say it is
> unnecessary. Then, why it doesn't need for multi-port card? Does it
> need for on board one?
...this might be a work-around for buggy super-i/o chips? If it doesn't
hurt in the general case, why not just always disable the FIFO?
> (2) Is it overwork that spliting the driver for ISA only card (I mean
> Hayes ESP:-) into bus dependent/independent part? (but hayespreg.h is
> in dev/ic ...)
Unless there are other bus attachments for Hayes ESP cards, that header
should be in sys/dev/isa.
It would be nice to have a sys/dev/ic driver for "com", but there needs to
be a nice way to have different names for the driver - i.e., on the hp300,
I don't want "com"s, I want "dca"s, and "apci"s.
> Anyway, since now it works, before sending it as PR, could someone
> else please test it and tell me the result if you have a card? Or,
> any other comment reading the source is also welcome. I've put it at
> the following location:
I don't have a card, but I'll be glad to take a look.
Jason R. Thorpe firstname.lastname@example.org
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