SAB80515 Datasheet, PDF (162/270 Pages) Siemens Semiconductor Group – 8-Bit Single-Chip Microcontroller Family

Instruction Set
INC
DPTR
Function:
Increment data pointer
Description:
Increment the 16-bit data pointer by 1. A 16-bit increment (modulo 2¹⁶) is performed;
an overflow of the low-order byte of the data pointer (DPL) from 0FFH to 00H will
increment the high-order byte (DPH). No flags are affected.
This is the only 16-bit register which can be incremented.
Example:
Registers DPH and DPL contain 12H and 0FEH, respectively. The instruction
sequence
INC
DPTR
INC
DPTR
INC
DPTR
Operation:
will change DPH and DPL to 13H and 01H.
INC
(DPTR) ← (DPTR) + 1
Encoding:
Bytes:
Cycles:
1010 0011
1
2
Semiconductor Group
162