From: Dave Horsfall <dave@horsfall.org>
To: The Eunuchs Hysterical Society <tuhs@tuhs.org>
Subject: [TUHS] Re: UNIX System V Release 2.2 gdts Vax-780
Date: Wed, 15 Mar 2023 19:52:49 +1100 (EST) [thread overview]
Message-ID: <alpine.BSF.2.21.9999.2303151948590.67613@aneurin.horsfall.org> (raw)
In-Reply-To: <202303150805.32F85Apq024391@freefriends.org>
On Wed, 15 Mar 2023, arnold@skeeve.com wrote:
[...]
> That is, 'c' for character device, major device is the index in cdevsw,
> and minor device indicates which physical one to use. Since you only
> have one, it should be 0.
There's also the possibility of using the upper-order bits to pass flags,
although there's not a lot that you can do with a printer (control of page
throw, etc).
-- Dave
next prev parent reply other threads:[~2023-03-15 8:53 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-15 0:59 Noel Chiappa
2023-03-15 8:05 ` arnold
2023-03-15 8:52 ` Dave Horsfall [this message]
2023-03-15 11:09 ` KenUnix
2023-03-15 11:59 Noel Chiappa
2023-03-15 21:03 ` Warren Toomey via TUHS
2023-03-15 21:08 ` Clem Cole
2023-03-15 21:15 ` Luther Johnson
2023-03-15 21:18 ` Seth Morabito
2023-03-15 21:22 ` Larry McVoy
2023-03-15 21:27 ` Clem Cole
2023-03-15 21:38 ` KenUnix
2023-03-16 23:18 ` Clem Cole
2023-03-16 23:48 ` Charles H. Sauer (he/him)
2023-03-17 1:08 ` Steve Nickolas
2023-03-15 21:46 ` Steve Nickolas
2023-03-15 21:50 ` Luther Johnson
2023-03-15 21:56 ` steve jenkin
2023-03-15 22:15 ` Larry McVoy
2023-03-15 23:30 ` Warner Losh
2023-03-15 23:41 ` Luther Johnson
2023-03-16 0:29 ` Warner Losh
2023-03-16 0:36 ` Rich Salz
2023-03-16 1:55 ` G. Branden Robinson
2023-03-16 21:14 ` Dave Horsfall
2023-03-17 0:33 ` Rich Salz
2023-03-17 1:05 ` segaloco via TUHS
2023-03-17 2:03 ` G. Branden Robinson
2023-03-17 3:17 ` Dave Horsfall
2023-03-16 1:15 ` Larry McVoy
2023-03-16 2:14 ` Luther Johnson
2023-03-15 23:44 ` Brad Spencer
2023-03-16 4:37 ` Dave Horsfall
2023-03-15 22:25 Noel Chiappa
2023-03-15 22:39 ` segaloco via TUHS
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