# SUBI Instruction

Subtracts a constant from an effective address.
ADDRESS METHODS: Dn, (An), (An)+, -(An), x(An), x(An,xr.s), x.w, x.l
DATA LENGTH: Byte, word, longword

FLAGS: | X - Set if a loan was required from the most significant bit, otherwise 0.
N - S
Z - S
C - Same as X
V - S

SYNTAX: SUBI #x,<ea>
Most assemblers automatically choose SUBI if the source operand to an SUB instruction is a constant.