Where is the IMMR sfr?

[leonp]

Hello, all.
	I try to use the gdb version 20010422 to substitute my old 4.18 version to 
debug my MPC860 based target. I use "set architecture powerpc:MPCXXX", after 
which most of my MPC860 registers appear to exist, except the IMMR register, 
which is reported as "value is not available", which means (as I was able to 
understand) that this register isn't in the architecture.
	This is one of the most importand registers in the MPC860. Does somebody 
knows how I can make it usable?

Many thanks ahead.
-- 
Leon M.Pollak
leonp@plris.com