Article 841 of rec.games.corewar:
Newsgroups: rec.games.corewar
From: dak@vlsi.polymtl.ca (Pierre Baillargeon (Hiv91))
Subject: Smallest jumper ?
Message-ID: <1992May5.183233.250@vlsi.polymtl.ca>
Sender: news@vlsi.polymtl.ca (USENET News System)
Organization: Ecole Polytechnique de Montreal
Date: Tue, 5 May 1992 18:32:33 GMT
Lines: 30

  I believe I achieved the smallest possible jumper.  I don't know how
original this is, but I thought it was pretty neat.  I call the technique
'temporal loop unrolling' which consist of replacing loop by multiple tasks
all executing the same code at the same time.  I think it's only useful for
small program since it execute ALL instruction multiple time.

Here it is:

;redcode
;name MinJump
;author Pierre Dak Baillargeon

size    equ     3
dist    equ     -217

start   spl split,  0           ; make 3 tasks
        jmp init,   0
split   spl 1,      0
init    mov #size,  init        ; reset size
        mov <init,  <dest       ; copy ourself
dest    jmp @dest,  #dist       ; jump to new code

        end start

It copies itself in 9 cycles instead of 10 for the normal four-instructions
jumper.
--
"Pis Bourassa qui est toujours la.  Y'a pas d'remede contre le SIDA" - French B
"This is a mad house !" - Rosencrantz
...........................................................dak@info.polymtl.ca