program = [
-- (addr, we, op)
(High, Low, High), -- z = r1 and t (0) ; t = r1 (1)
(Low, Low, Low), -- z = r0 or t (1); t = r0 (0)
program = [
-- (addr, we, op)
(High, Low, High), -- z = r1 and t (0) ; t = r1 (1)
(Low, Low, Low), -- z = r0 or t (1); t = r0 (0)