There seems to be only APDA Draft version (1988)
Volume 1 & 2. Is there a more recent version
of this online? (1990 edition)
Got it. I now have the Addison Wesley version.
As a PDF.
Does anyone have a copy (PDF) of
GS/OS Device Driver Reference?
There now seems to be available on line
a copy of
GS/OS Reference Manual
This is the Addison-Wesley published version
and not the beta/draft version which is
Here is the link.