Intel 8XC251SA - Page 380

8XC251SA, SB, SP, SQ USER’S MANUAL
A-128
Hex Code in: Binary Mode = [Encoding]
Source Mode = [Encoding]
Operation: SUBB
(A) ← (A) – (CY) – #data
SUBB A,dir8
Binary Mode Source Mode
Bytes: 22
States: 1† 1†
†If this instruction addresses a port (P
x , x = 0–3), add 1 state.
Hex Code in: Binary Mode = [Encoding]
Source Mode = [Encoding]
Operation: SUBB
(A) ← (A) – (CY) – (dir8)
SUBB A,@Ri
Binary Mode Source Mode
Bytes: 12
States: 23
Hex Code in: Binary Mode = [Encoding]
Source Mode = [A5][Encoding]
Operation: SUBB
(A) ← (A) – (CY) – ((Ri))
SUBB A,Rn
Binary Mode Source Mode
Bytes: 12
States: 12
Hex Code in: Binary Mode = [Encoding]
Source Mode = [A5][Encoding]
Operation: SUBB
(A) ← (A) – (CY) – (Rn)
[Encoding] 1 0 0 1 0 1 0 0 immed. data
[Encoding] 1 0 0 1 0 1 0 1 direct addr
[Encoding] 1 0 0 1 0 1 1 i
[Encoding] 1 0 0 1 1 r r r