Intel 8XC251SA - Page 316

8XC251SA, SB, SP, SQ USER’S MANUAL
A-64
Hex Code in: Binary Mode = [A5][Encoding]
Source Mode = [Encoding]
Operation: INC
(WRj) ← (WRj) + #short
INC DRk,#short
Binary Mode Source Mode
Bytes: 32
States: 43
Hex Code in: Binary Mode = [A5][Encoding]
Source Mode = [Encoding]
Operation: INC
(DRk) ← (DRk) + #shortdata pointer
INC DPTR
Function: Increment data pointer
Description: Increments the 16-bit data pointer by one. A 16-bit increment (modulo 2
16
) is performed; an
overflow of the low byte of the data pointer (DPL) from 0FFH to 00H increments the high
byte of the data pointer (DPH) by one. An overflow of the high byte (DPH) does not
increment the high word of the extended data pointer (DPX = DR56).
Flags:
Example: Registers DPH and DPL contain 12H and 0FEH, respectively. After the instruction sequence
INC DPTR
INC DPTR
INC DPTR
DPH and DPL contain 13H and 01H, respectively.
Binary Mode Source Mode
Bytes: 11
States: 11
Hex Code in: Binary Mode = [Encoding]
Source Mode = [Encoding]
Operation: INC
(DPTR) ← (DPTR) + 1
[Encoding] 0 0 0 0 1 0 1 1 u u u u 11 v v
CY AC OV N Z
———✓✓
[Encoding] 1 0 1 0 0 0 1 1