SBB

 


Opcode

Operand

Description

SBB

R

M

Subtract register or memory from accumulator

with borrow

 

 

—  The contents of the register or memory location and Borrow Flag (i.e. CY)

are subtracted from the contents of the accumulator.

 

—  The result is stored in accumulator.

—  If the operand is memory location, its address is specified by H-L pair.

—  All flags are modified to reflect the result of subtraction.

—  Example: SBB B or SBB M

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