Intel 8XC251SA, User Manual

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8XC251SA, SB, SP, SQ USER’S MANUAL
A-62
Flags:
Example: Register 0 contains 7EH (011111110B) and on-chip RAM locations 7EH and 7FH contain
0FFH and 40H, respectively. After executing the instruction sequence
INC @R0
INC R0
INC @R0
register 0 contains 7FH and on-chip RAM locations 7EH and 7FH contain 00H and 41H,
respectively.
Variations
INC A
Binary Mode Source Mode
Bytes: 1 1
States: 1 1
Hex Code in: Binary Mode = [Encoding]
Source Mode = [Encoding]
Operation: INC
(A)
←
(A) + 1
INC dir8
Binary Mode Source Mode
Bytes: 2 2
States: 2† 2†
†If this instruction addresses a port (P x , x = 0–3), add 2 states.
Hex Code in: Binary Mode = [Encoding]
Source Mode = [Encoding]
Operation: INC
(dir8)
←
(dir8) + 1
INC @Ri
Binary Mode Source Mode
Bytes: 1 2
States: 3 4
Hex Code in: Binary Mode = [Encoding]
Source Mode = [A5][Encoding]
CY AC OV N Z
— — —
✓ ✓
[Encoding] 0 0 0 0 0 1 0 0
[Encoding] 0 0 0 0 0 1 0 1 direct addr
[Encoding] 0 0 0 0 0 1 1 i