Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!bloom-beacon!spdcc!dyer
From: dyer@spdcc.COM (Steve Dyer)
Newsgroups: comp.unix.xenix
Subject: Re: Xenix device drivers and/or WSYE WY-700
Message-ID: <2600@spdcc.SPDCC.COM>
Date: 17 Feb 89 04:07:24 GMT
References: <618@dms.UUCP> <465@ispi.UUCP>
Reply-To: dyer@ursa-major.spdcc.COM (Steve Dyer)
Organization: S.P. Dyer Computer Consulting, Cambridge MA
Lines: 19

In article <465@ispi.UUCP> jbayer@ispi.UUCP (Jonathan Bayer) writes:
>>I have this WYSE WY-700 graphics board and monitor lying around and thought
>>of hooking it up on a 386 system running Xenix/386 2.3.1. Then I thought it
>	Yes, the Development System has information and examples for
>writing device drivers.

Yeah, but not console device drivers... (or tell me that I'm wrong
with the new docs--I HOPE so!)  The WY-700 is a CGA/mono board with
additional resolutions.  Ideally, you'd just like to add a few ioctls
which put the board into these new resolutions (plus ioctl (or IOPL)
access to the pokes which switch between the two 64K banks of memory
which comprise the bitmaps of the even and odd scanlines [yucch].)
There hasn't been any "clean" way to do this in the versions of XENIX
I've seen so far.

-- 
Steve Dyer
dyer@ursa-major.spdcc.com aka {ima,harvard,rayssd,linus,m2c}!spdcc!dyer
dyer@arktouros.mit.edu