@ Test 0 xor 0 = 0
SSSSN           | PUSH 0
SSSSN           | PUSH 0
NSTTSTSTTN      | JSR > 101110 (xor)
NSTTSSTN        | JSR > 1001 (print number from stack)

@ Test 0 xor 1 = 1
SSSSN           | PUSH 0
SSSTN           | PUSH +1
NSTTSTSTTN      | JSR > 101110 (xor)
NSTTSSTN        | JSR > 1001 (print number from stack)

@ Test 1 xor 1 = 0
SSSTN           | PUSH +1
SSSTN           | PUSH +1
NSTTSTSTTN      | JSR > 101110 (xor)
NSTTSSTN        | JSR > 1001 (print number from stack)

@ Test 1 xor 1...1 = 1...10
SSSTN           | PUSH +1
SSTTN           | PUSH -1
NSTTSTSTTN      | JSR > 101110 (xor)
NSTTSSTN        | JSR > 1001 (print number from stack)

@ Test 1010...1010 xor 0101...0101 = 1...1
@ Note that -6148914691236517206 = 1010...1010 in twos-complement but we 
@ enter it in sign magnitude format so the bit pattern appears different.
SSTSTSTSTSTSTSTSTSTSTSTSTSTSTSTSTSTSTSTSTSTSTSTSTSTSTSTSTSTSTSTSTTSN | PUSH -6148914691236517206
SSSTSTSTSTSTSTSTSTSTSTSTSTSTSTSTSTSTSTSTSTSTSTSTSTSTSTSTSTSTSTSTSTN  | PUSH +6148914691236517205
NSTTSTSTTN      | JSR > 101110 (xor)
NSTTSSTN        | JSR > 1001 (print number from stack)

@ All done.
NNN             | DIE

#include <logic.pvvs>
#include <stdio.pvvs>