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From: "Rod Pemberton" <do_not_have AT nohavenot DOT cmm>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: /beta/pth207b.zip seems to need 686+
Date: Sat, 14 Mar 2009 01:41:32 -0400
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"Rugxulo" <rugxulo AT gmail DOT com> wrote in message
news:516e4445-01a0-4d00-bb08-2451923f7ce0 AT g38g2000yqd DOT googlegroups DOT com...
> > But neither works without an FPU
> > ...
> on my 486 Sx/25:
> ...
> signal SIGNOFP Coprocessor not available

Yup...  You tried to execute a floating point instruction on a cpu which
doesn't support ESC sequences.  IIRC, you need a DX series 486 or an SX
series 486 *and* a 487 SX coprocessor.  Odd, I also seem to recall the 386
was the last series with an optionally separate FPU...  Anyway, another
option is software emulation.

Perhaps, FAQ 11.1 "11.1 Floating-point code without 80387" would help?
I.e., it first suggests adding -lemu to your link flags and optionally
setting some DOS environment variables (see putenv()).  Then, it suggests
some software emulators.
http://www.delorie.com/djgpp/v2faq/faq11_1.html


Rod Pemberton