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From: ags@pucc-i (Seaman)
Newsgroups: net.jokes
Subject: Re: Assembler Manual Needed - (nf)
Message-ID: <206@pucc-i>
Date: Thu, 16-Feb-84 11:05:24 EST
Article-I.D.: pucc-i.206
Posted: Thu Feb 16 11:05:24 1984
Date-Received: Sat, 18-Feb-84 02:56:36 EST
References: <5669@uiucdcs.UUCP>
Organization: Purdue University Computing Center
Lines: 23

BSP - Backspace program counter?  That's a genuine possiblility on at least 
one machine.

The TI980 has (I would say "had", but I know of at least one that is still
operating) 8 16-bit registers that are accessible by a whole range of
register-to-register instructions such as RMO (register move), RIN
(register increment), RAD (register add), ROR (register or), etc.

Register number 7 is the program counter.

Ponder the results of:

	RDE	7,7	decrement the program counter by one.

Hint:  this is a one-word instruction.  The TI980 is word-addressable,
not byte-addressable.
-- 

Dave Seaman
..!pur-ee!pucc-i:ags

"Against people who give vent to their loquacity 
by extraneous bombastic circumlocution."