29-mitsuzen-hdi-10-visual-cortex

29: Mitsuzen HDI-10 (Visual Cortex)

Instructions

Read a value from each of the optic nerves present and write the correct value to the nerve that runs deeper into your visual cortex (V-CTX). To determine the value that should be written, count the number of values read that are greater than -55, multiply that count by 5, and then subtract 75. Repeat ad infinitum.

It is not necessary to leave no trace. Your EXAs should be written to operate indefinitely.

For more information see "Debugging the Phage" in the first issue of the zine.

Solution

XA (global)

LINK 800
REPL R0
REPL R1
JUMP LOOP
MARK R0
LINK 1
REPL R2
REPL R3
JUMP LOOP
MARK R1
LINK -3
REPL R4
JUMP LOOP
MARK R2
LINK 1
REPL R5
JUMP LOOP
MARK R3
LINK -3
JUMP LOOP
MARK R4
LINK -3
REPL R6
JUMP LOOP
MARK R5
LINK -3
REPL R7
JUMP LOOP
MARK R6
LINK 1
JUMP LOOP
MARK R7
LINK -3
JUMP LOOP
MARK LOOP
COPY 3 T
MARK WAIT
SUBI T 1 T
TJMP WAIT
MARK LOOP2
TEST #NERV > -55
MULI T 5 M
COPY 4 T
MARK WAIT2
SUBI T 1 T
TJMP WAIT2
JUMP LOOP2

XB (global)

LINK 800
LINK 1
LINK 3
MARK LOOP
@REP 9
ADDI X M X
@END
SUBI X 75 #NERV
COPY 0 X
JUMP LOOP

Results

Cycles	Size	Activity
402	63	12