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From: BOBW@USU.BITNET (BOB WOOD WA7MXZ)
Newsgroups: comp.os.cpm
Subject: North Star Parallel Port Patching
Message-ID: <8705081517.AA14041@ucbvax.Berkeley.EDU>
Date: Fri, 8-May-87 11:06:00 EDT
Article-I.D.: ucbvax.8705081517.AA14041
Posted: Fri May  8 11:06:00 1987
Date-Received: Sat, 9-May-87 18:37:28 EDT
Sender: daemon@ucbvax.BERKELEY.EDU
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Re: North Star Parallel Port.

ACCORDING TO MY LIFEBOAT MANUAL, THERE IS A PARALLEL PRINTER DRIVER ALREADY
INCLUDED IN THEIR CPM THAT WORKS FINE (I TRIED IT). YOU'LL HAVE TO FIND WHERE
THE PROPER OFFSETS ARE FOR YOUR INSTALLATION OF CPM. These addresses are the
distribution offsets.
right now HLIST points to a jump to the serial port:
5A09 C3525A     HLIST  JMP    HOROUT1    ; Right Serial Port
my address is FA09 for 56K CPM.
the address for HOROUT1 is 5A5D. To get the parallel to work you point to
error in above line... HOROUT1 is at 5A52 (FA52) HOROUT2 (parallel) is at
5A5D (FA5D). All I did was patch location FA0A to 5D and then ran:
A>SAVEUSER
Saveuser is the Lifeboat user area patch program.
This works for the Horizon, I hope you don't have an Advantage.
Bob Wood