參數(shù)資料
型號: μPD789418
廠商: NEC Corp.
英文描述: 8 Bit Single Chip Microcontrollers(8位單片微控制器)
中文描述: 8位單片機微控制器(8位單片微控制器)
文件頁數(shù): 80/125頁
文件大小: 366K
代理商: ΜPD789418
CHAPTER 5 EXPLANATION OF INSTRUCTIONS
63
INC
Increment
Byte Data Increment
[Instruction format]
INC dst
[Operation]
dst
dst + 1
[Operand]
Mnemonic
Operand (dst)
INC
r
saddr
[Flag]
Z
AC
CY
×
×
[Description]
The destination operand (dst) contents are incremented by only one.
If the increment result is 0, the Z flag is set to (1). In all other cases, the Z flag is cleared to (0).
If the increment generates a carry for bit 4 out of bit 3, the AC flag is set to (1). In all other cases, the AC flag
is cleared to (0).
Because this instruction is frequently used for a counter for repeated operations, the CY flag contents are not
changed (to hold the CY flag contents in multiple-byte operation).
[Description example]
INC B; The B register is incremented.
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