14-mitsuzen-hdi-10-heart

14: Mitsuzen HDI-10 (Heart)

Instructions

Read a value from the nerve connected to your central nervous system (CNS) and make your heart beat by writing a sequence of values to your sinoatrial (SA-N) and atrioventricular (AV-N) nodes as indicated in the HDI-10 I/O log when holding the "SHOW GOAL" button. The length of each sequence of values should be equal to the value from the CNS divided by -10. 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

MARK READ
COPY #NERV X
DIVI X -10 X
COPY X M
COPY X M
JUMP READ

XB (global)

LINK 800
LINK 1
LINK 1

MARK BEAT
COPY M X
COPY 40 #NERV
MARK SEQUENCE
COPY -70 #NERV
SUBI X 1 X
TEST X = 1
FJMP SEQUENCE
JUMP BEAT

XC (global)

LINK 800
LINK 3
LINK 3

COPY -70 #NERV
MARK BEAT
COPY M X
COPY 40 #NERV
MARK SEQUENCE
COPY -70 #NERV
SUBI X 1 X
TEST X = 1
FJMP SEQUENCE
JUMP BEAT

Results

Cycles	Size	Activity
119	32	7