Hey all. I've figured out how to read out bits from the input pins, save them to b0, and write them out to output pins using a Rube Goldbergish set of outputs:
if b0 = %00000000 then low B.3, B.2, B.1, B.0 pause 100 endif
if b0 = %00000001 then low B.3, B.2, B.1 high B.0 pause 100 endif
if...