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Mail Archives: djgpp/2002/02/20/22:47:10

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From: Charles Sandmann <sandmann AT clio DOT rice DOT edu>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: RHIDE debugger fails to start on board without floating point unit
Date: Wed, 20 Feb 2002 21:24:47 CST
Organization: Rice University, Houston TX
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> I am trying to develop a program to run on a 486 based ELAN SC400 processor
> that does not have a floating point unit.

You can't use debuggers with an emulator if I remember correctly..  Does your 
program use floating point?  If it does not, this might work:
 1) SET 387=N
 2) Rename EMU387.DXE so it's not found.
See if you can debug.  I believe this should avoid all FP instructions.

If it does use floating point I think you are stuck, since the emulator 
doesn't know how to handle floating traps in a different address space.

As always, you should check the FAQ for additional hints.

A conventional TSR emulator won't work.

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