PDP11 SEX and Fubar

From: Roger Merchberger <zmerch_at_30below.com>
Date: Tue May 15 18:58:07 2001

Rumor has it that Bill Pechter may have mentioned these words:

>So I was told at DEC Training. The PDP11/34 has the SEX Multiplexer
>doing the sign extend.
>
>Seems hardware engineering had a little more leeway than the software
>guys working on Macro11 and the assembler mnemonics.

Maybe at DEC, but not at Motorola -- in 6809 Assembly, there *is* a SEX -
which is Sign EXtend B register into A. (for working with the "D" register,
which is A&B put together.

Altho that's not the only (or even main) reason that's my favo[u]rite
CPU... :-)

>Bill

Roger "Merch" Merchberger
--
Roger "Merch" Merchberger   ---   sysadmin, Iceberg Computers
Recycling is good, right???  Ok, so I'll recycle an old .sig.
If at first you don't succeed, nuclear warhead
disarmament should *not* be your first career choice.
Received on Tue May 15 2001 - 18:58:07 BST

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