RX01 Bootstrap Loader

From: John Wilson <wilson_at_dbit.dbit.com>
Date: Sat Feb 12 12:38:18 2000

On Sat, Feb 12, 2000 at 11:44:58AM -0500, John B wrote:
> I am more concerned about the incompatibilities in the basic instruction
> set.

Like what? If you mean the RTI/RTT thing and the thing about SWAB and
the V bit (I hope I have those right), it's *really* unlikely that any OS
code depends on either of those. The MOV SP,-(SP) thing shows up in other
models so the OSes should know better than to care about that (although IIRC
the DECUS DOS/BATCH BASIC actually *needs* that piece of 11/20 behavior and
won't run on some of the other early models), and similarly the /04 and /05
are missing SOB too so the small-machine OSes don't use that either.

John Wilson
D Bit
Received on Sat Feb 12 2000 - 12:38:18 GMT