gc80c520a CORERIVER Semiconductor, gc80c520a Datasheet - Page 116

• Manufacturer Part Number: gc80c520a
• Description: Midas1.0 Family Mask Rom/eprom/romless 8-bit Turbo Microcontrollers
• Manufacturer: CORERIVER Semiconductor

INC
Description:
DPTR
Operation:
Encoding:
Function:
Example:
Cycles:
Bytes:
Increment Data Pointer
Increment the 16-bit data pointer by 1. A 16-bit increment (modulo 2 ) 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.
Registers DPH and DPL contain 12h and 0FEh, respectively. The instruction
sequence,
INC DPTR
INC DPTR
INC DPTR
will change DPH and DPL to 13h and 01h.
1
1
INC
(DPTR)
1
Preliminary
0
←
1
(DPTR) + 1
0
0 0 1 1
Page 116 of 187
Instruction Set
16