dougw@chance.uucp (Doug Worthington) (09/14/89)
I have a two part problem dealing with xenix 2.3.0 on a zenith 386 using an
imaging technology PC Vision-Plus digitizing board.
1. Does anybody have a device driver to support this configuration
2. If anybody has experience writting device drivers for under xenix
this is small description of my problem.
I have a device driver to interact with the digitizer
that was written for 2.2.x and utilizes calls to dscralloc and mmudescr.
These calls are not appropriate under 2.3.0 on a 386 machine. In order
to map memory for use by the device I think I should use mapptov or mapphys.
I realize mapptov should only be called in the initialization routine but I
don't know the difference between these two calls because they both describe
the same capability. If anybody can help I would appreciate it.
doug wortington
Internet : dougw@community-chest.mitre.org