参数资料
型号: 78078Y
厂商: NEC Corp.
英文描述: Common to 78K/0 Series
中文描述: 共同的78K / 0系列
文件页数: 72/129页
文件大小: 644K
代理商: 78078Y
72
CHAPTER 5 EXPLANATION OF INSTRUCTIONS
User's Manual U12326EJ4V0UM
Decrement
DEC
Byte Data Decrement
[Instruction format]
DEC dst
[Operation]
dst
dst
1
[Operand]
Mnemonic
Operand(dst)
DEC
r
saddr
[Flag]
Z
AC
CY
×
×
[Description]
The destination operand (dst) contents are decremented by only one.
If the decrement result is 0, the Z flag is set (1). In all other cases, the Z flag is cleared (0).
If the decrement generates a carry for bit 3 out of bit 4, the AC flag is set (1). In all other cases, the AC
flag is cleared (0).
Because this instruction is frequently used for decrement 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).
If dst is the B or C register or saddr, and it is not desired to change the AC and CY flag contents, the DBNZ
instruction can be used.
[Description example]
DEC FE92H;
The contents at address FE92H are decremented.
相关PDF资料
PDF描述
78083 Common to 78K/0 Series
780924 Common to 78K/0 Series
780964 Common to 78K/0 Series
78098 Common to 78K/0 Series
78098B Common to 78K/0 Series
相关代理商/技术参数
参数描述
780790001 制造商:Molex 功能描述:1mm pit DDR3 DIMM PCB Skt Blk
78079-0001 功能描述:DDR3 / DDR2 / DDR 连接器 1.0MM DDR3 DIMM SKT 240P V TH 2.67TL AU RoHS:否 制造商:Molex 产品类型:DIMM 系列:78588 节距:1 mm 位置/触点数量:240 安装风格:Through Hole 安装角:Vertical 外壳材料:Thermoplastic 触点材料:Copper Alloy 触点电镀:Gold 电压额定值:29 V 电流额定值:1 A 长度:
780790002 制造商:Molex 功能描述:
78079-0002 功能描述:DDR3 / DDR2 / DDR 连接器 1mm DDR3 DIMM VtTH O O/Lub .38AuLF 240Ckt RoHS:否 制造商:Molex 产品类型:DIMM 系列:78588 节距:1 mm 位置/触点数量:240 安装风格:Through Hole 安装角:Vertical 外壳材料:Thermoplastic 触点材料:Copper Alloy 触点电镀:Gold 电压额定值:29 V 电流额定值:1 A 长度:
78079-0011 功能描述:DDR3 / DDR2 / DDR 连接器 1mm DDR3 DIMM VtTH / /Lub .76AuLF 240Ckt RoHS:否 制造商:Molex 产品类型:DIMM 系列:78588 节距:1 mm 位置/触点数量:240 安装风格:Through Hole 安装角:Vertical 外壳材料:Thermoplastic 触点材料:Copper Alloy 触点电镀:Gold 电压额定值:29 V 电流额定值:1 A 长度: