參數(shù)資料
型號: UPD178F124
英文描述: 78K/0 Series for Instructions | User's Manual[10/2001]
中文描述: 78K線/ 0系列說明|用戶手冊[10/2001]
文件頁數(shù): 99/129頁
文件大小: 644K
代理商: UPD178F124
71
CHAPTER 5 EXPLANATION OF INSTRUCTIONS
User's Manual U12326EJ4V0UM
Increment
INC
Byte Data Increment
[Instruction format]
INC dst
[Operation]
dst
← dst + 1
[Operand]
Mnemonic
Operand(dst)
INC
r
saddr
[Flag]
ZAC
CY
××
[Description]
The destination operand (dst) contents are incremented by only one.
If the increment result is 0, the Z flag is set (1). In all other cases, the Z flag is cleared (0).
If the increment generates a carry for bit 4 out of bit 3, the AC flag is set (1). In all other cases, the AC flag
is cleared (0).
Because this instruction is frequently used for increment of a counter for repeated operations and an indexed
addressing offset register, 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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