Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!iuvax!bsu-cs!rmfowler
From: rmfowler@bsu-cs.bsu.edu (Rex M. Fowler)
Newsgroups: comp.sys.ibm.pc
Subject: PCjr expanded memory
Keywords: memory side-car
Message-ID: <10106@bsu-cs.bsu.edu>
Date: 8 Sep 89 21:57:36 GMT
Organization: CS Dept, Ball St U, Muncie, IN, USA
Lines: 33


  I recently acquired a used 128k memory side car for my jr, boosting
it to a whopping 256k machine. My question is, does anyone have any
documentation on what parameters there are and what they are for
that go along with configjr.sys?

ex.

device = configjr.sys -X -Y -Z

What are all the possibilities here?

Also, is the extra memory only found if i boot from dos with the above in
my config.sys?  what if i want to run a program that requires more than
the original 128k but to run it I just put it in the drive and boot the 
machine? will it know that i have 256k or will it think i have only 128k?


third and final question..

Since the side-car expansion and the optional parallel port can be "snapped"
together, i assume that if I knew which of the pins were for the parallel
port, i wouldn't need to spend the money to buy the add-on port. I could
probably come up with something on my own?

Any help with any or all of these problems would be greatly appreciated.

Thanks,
Rex Fowler (rmfowler@bsu-cs.bsu.edu)
-- 
Rex Fowler		UUCP : <backbones>!{iuvax,pur-ee}!bsu-cs!rmfowler
Ball State University   ARPA : rmfowler@bsu-cs.bsu.edu
Muncie, IN