Table 3.

Coordination instructions for this study

Instruction	Description
send-msg	Send a message to a neighbor of the caller.
retrieve-msg	Load the contents of a received message into the caller’s virtual CPU.
rotate-left-one	Rotate this organism counterclockwise one step.
rotate-right-one	Rotate this organism clockwise one step.
get-role-id	Set register BX to the value of the caller’s role-id register.
set-role-id	Set the caller’s role-id register to the value in register BX.
bcast1	Send a message to all neighboring organisms.
get-cell-xy	Set register BX and CX to the (x, y) coordinates of the caller.