IBM PC hacking
ard at p850ug1.demon.co.uk
Tue Sep 27 17:29:52 CDT 2005
> IIRC, a PS/2 model 25 and 30 also have BASIC in ROM. And a PCjr most certainly
> does (along with a full diagnostic program and "keyboard tutorial" -- the diags
> were impressive for the time).
The problem with those diagnostics (and most built-in diagnostics) is
that a fairly large part of the machine has to be operational (at least
the CPU, some memory, ROM, video) for them to be at all useful.
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