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From: root@minixug.mugnet.org (MINIXUG-ONLINE System Manager)
Newsgroups: comp.os.minix
Subject: Re: Looking for pty and AST 4-port device drivers...
Message-ID: <9104204054@minixug.mugnet.org>
Date: 20 Apr 91 00:12:00 GMT
References: <1991Apr18.031107.987@peapod.uucp>
Organization: MINIX User Group Holland (NLMUG)   -  MUGNET  -
Lines: 23

jrs@peapod.uucp (Jonathan R. Senning) wrote:
> Hello all,
> 
> Has any one implemented a pty(4) (pseudo terminal) device driver for minix?
I am writing one.  It runs in user space, as an extra server process, to
keep the kernel as small as possible.  I am, however, still having some
problems with flusing- I need a way to tell the CLOCK driver to send me
a 'wakeup' msg every N millisec... :-(   Comments, anyone?

> How about modifying the tty driver to handle dumb IO cards like the
> AST 4-port board using a single interrupt?
I did that, and it works fine.  However, if you do not install NS16550
UARTs on the board, MINIX has serious trouble with keeping up with the
interrupts... :-)

> If either of the above modifications exist, especially for Minix 1.5 on a
> PC (either regular or 386 mode), where can I get them from?
Send me email, and we'll take care of it.

> Thanks a bunch,
Green ones? :-)

Fred van Kempen