CNDST

Format: CNDST sourcePCND, dest, source, sourceAdjust.

Construction: CNDST (0|1|2|3), W0, S0, (0…2)

Description: Conditional Start

W0 is destination

sourceAdjust = 1 or 2
if ([[!]sourcePCND|true|false] && S0 == 0) 
{
    W0 = 0
    Pe = 1
} 
else 
{
    W0 = S0 + sourceAdjust 
    Pe = 0
}