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ADC Arithmetic Addition with Carry
Flags affected:
O D I T S Z A P C OF: Overflow flag TF: Trap flag AF: Aux carry
F F F F F F F F F DF: Direction flag SF: Sign flag PF: Parity flag
* * * * * * IF: Interrupt flag ZF: Zero flag CF: Carry flag
Legal forms:
ADC r8,r8
ADC m8,r8
ADC r8,m8
ADC r16,r16
ADC m16,r16
ADC r16,m16
ADC r32,r32 386+
ADC m32,r32 386+
ADC r32,m32 386+
ADC r8,i8
ADC m8,i8
ADC r16,i16
ADC m16,i16
ADC r32,i32 386+
ADC m32,i32 386+
ADC r16,i8
ADC m16,i8
ADC r32,i8 386+
ADC m32,i8 386+
ADC AL,i8
ADC AX,i16
ADC EAX,i32 386+
Examples:
ADC BX,DI
ADC EAX,5
ADC AX,0FFFFH ;Uses single-byte opcode
ADC AL,42H ;Uses single-byte opcode
ADC BP,17H
ADC WORD [BX+SI+Inset],5
ADC WORD ES:[BX],0B800H
Notes:
ADC adds the source operand and the Carry flag to the destination operand, and after the operation, the result replaces the destination operand. The add operation is an arithmetic add, and the carry allows multiple-precision additions across several registers or memory locations. (To add without taking the Carry flag into account, use the ADD instruction.) All affected flags are set according to the operation. Most importantly, if the result does not fit into the destination operand, the Carry flag is set to 1.
r8 = AL AH BL BH CL CH DL DH r16 = AX BX CX DX BP SP SI DI
sr = CS DS SS ES FS GS r32 = EAX EBX ECX EDX EBP ESP ESI EDI
m8 = 8-bit memory data m16 = 16-bit memory data
m32 = 32-bit memory data i8 = 8-bit immediate data
i16 = 16-bit immediate data i32 = 32-bit immediate data
d8 = 8-bit signed displacement d16 = 16-bit signed displacement
d32 = 32-bit unsigned displacement
