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2 Instructions
CP1E CPU Unit Instructions Reference Manual(W483)
Symbol Math Instructions
2
–/–L
Function
–
–(400) subtracts the binary values in Su from Mi and outputs the result to R. When the result is nega-
tive, it is output to R as a 2’s complement.
–L
–L(411) subtracts the binary values in Su and Su+1 from Mi and Mi+1 and outputs the result to R, R+1.
When the result is negative, it is output to R and R+1 as a 2’s complement.
RCY
Mi
Su
(Signed binary)
(Signed binary)
(Signed binary)
CY will turn ON
when there is a
borrow.
Su+1
CY
R
Mi+1
R+1
Mi
Su
(Signed binary)
(Signed binary)
(Signed binary)
CY will turn ON
when there is a
borrow.