WORM Solution
PAIR SWAP
WORM row 6
Prerequisites
Unlocks
w27 solved
Active cores1, 4, 7
Program lines9
DetailWORM row 6
Walkthrough
PAIR SWAP: (a,b,c,d,...) -> (b,a,d,c,...); odd tail dropped.
Core 0 reads a into ACC, then MOV DOWN,UP forwards b, then MOV DOWN,ACC
forwards a; values run down column 0 (0 -> 4 -> 8 = output stream 0).
Rack Solution
# PAIR SWAP: (a,b,c,d,...) -> (b,a,d,c,...); odd tail dropped.
# Core 0 reads a into ACC, then MOV DOWN,UP forwards b, then MOV DOWN,ACC
# forwards a; values run down column 0 (0 -> 4 -> 8 = output stream 0).
@1
L: MOV ACC, UP
MOV DOWN, UP
MOV DOWN, ACC
JMP L
@4
MOV DOWN, UP
@7
MOV DOWN, UP