Date : Wed, 24 Jul 1991 20:25:21 GMT
From : cis.ohio-state.edu!zaphod.mps.ohio-state.edu!hobbes.physics.uiowa.edu!news.iastate.edu!IASTATE.EDU!danny@ucbvax.Berkeley.EDU (Staedtler Danny A)
Subject: Wanted Osborne Executive ROM & BIOS Listings
I am planning on making some modifications to my Osborne Executive.
What I plan is to do the following:
1. Build a replacement memory board to add memory banks 2-6
2. Replace my 5 1/4" (180K) floppies with 3 1/2" (720K) floppies
3. Replace the Monitor EPROM (a 2764 with a 27128) and put in
some addition built in functions.
I have schematics and just about have the artwork for the memory
board done. However to get 2 and 3 above accomplished, I need the
listing to Osborne Executive ROM Monitor version 1.44 and BIOS code.
Does someone out there have the Osborne Technical Reference Manuals
that contains the source code listings? Can I make some arrangement
to photocopy or scan them in?
I have also talked to two people who said they had hard drives in
their Exec's (when they had them). Does anybody have any technical
information on this?
Just an old CPM hardware hacker - Dan Staedtler (danny@iastate.edu)
End of INFO-CPM Digest V91 Issue #131
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