[Simh] emulating rom in simh?

[Tim Newsham]

Is there an easy way to emulate a small rom (or map in small regions
of additional ram) in simh?

The boot procedures for 1st ed unix have a small ROM at 173700 but
the RAM only went up to 57777.  We could just populate a full 64k
of RAM and laod the ROM code into the appropriate place, but it would
be nicer if we could be more realistic in the simulation.

Tim Newsham
http://www.thenewsh.com/~newsham/