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From: bandy@amdcad.UUCP
Newsgroups: comp.os.cpm
Subject: SUPRBDOS use of z80 registers?
Message-ID: <15244@amdcad.UUCP>
Date: Fri, 20-Mar-87 16:13:45 EST
Article-I.D.: amdcad.15244
Posted: Fri Mar 20 16:13:45 1987
Date-Received: Sun, 22-Mar-87 14:44:18 EST
References: <1987Mar19.141504.21625@gpu.utcs.toronto.edu>
Reply-To: bandy@amdcad.UUCP (Andy Beals)
Organization: Advanced Micro Devices, Sunnyvale, California
Lines: 18
Keywords: 'IX

In article <1987Mar19.141504.21625@gpu.utcs.toronto.edu> edwest@gpu.utcs.toronto.edu (Dr. Edmund West) writes:
>  Incidentally, I got started on all this when I tried to install
>SUPRBDOS (the public domain replacement for DRI's BDOS) and discovered
>that the HDC driver trashes the IX register SUPRBDOS is using.

Boo on SUPRBDOS for doing that.

CP/M-80 is an *8080* operating system.  If your BIOS or BDOS uses any of
the z80 register set, it MUST save them or else it will break many many
programs.  This is my biggest gripe with the turkey who did the bios and
roms for the Osborne-1.  (grumble grumble)

	andy

ps. If anyone wishes to purchase my Osborne, give me a ring or drop
some mail... [it works perfectly, I just have a s100 system now]
-- 
Andrew Scott Beals, {lll-crg,decwrl,allegra}!amdcad!bandy +1 408 749 3683