"Old PC" emulation ?

[Tony Duell]

> Which led me to consider the impact of this on being able to run the
> older PC software anytime in the future.  Can one still install a
> QNX box, or a Minix box, or an OS/2 system?

Is there good reason (considering that schematics are available, and 
most, if not all, of the chips are not hard to find) not to be able to 
keep real IBM PCs, PC/XTs, and PC/ATs running?

-tony