Re: Illegal instruction on CL-PS7110 (ARM710a)

[Russell King - ARM Linux Admin]

Werner Almesberger writes:
> At the moment, I'm playing around with a few programs from
> ftp://ftp.arm.linux.org.uk/pub/armlinux/RedHat/RPMS/ on my Psion
> (CL-PS7110 CPU, with an ARM710a core) and I got "Illegal instruction" a
> few times, e.g. from dip and from rz.

One of the good things about those packages on ftp.arm.linux.org.uk is
that they are all compiled for ARM2 chips, which means that the code
should run on all ARM-based chips without any problems.

> Unfortunately, the kernel (2.1.125) is silent about what instruction
> that may have been.

It sounds like your missing the floating point emulation.  There are two
different emulators around at the moment - the Acorn FPE (which can be
found in ftp://ftp.arm.linux.org.uk/pub/armlinux/fpemulator), or the
Netwinder FPE.  

I would recommend you getting the Acorn FPE and an up to date kernel
source.  You should then find that 'insmod' (not the version in
ftp.arm.linux.org.uk, but an ELF version) should be able to load the
fpemulator.  You will have to supply insmod the '-f' flag though.
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