参数资料
型号: 780208
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: 20/129页
文件大小: 644K
代理商: 780208
20
User's Manual U12326EJ4V0UM
CHAPTER 3 ADDRESSING
3.1 Instruction Address Addressing
An instruction address is determined by program counter (PC) contents. The PC contents are normally
incremented (+1 for each byte) automatically according to the number of bytes of an instruction to be fetched each
time another instruction is executed. When a branch instruction is executed, the branch destination information
is set to the PC and branched by the following addressing (for details of each instruction, refer to
CHAPTER 5
EXPLANATION OF INSTRUCTIONS
).
3.1.1 Relative addressing
[Function]
The value obtained by adding 8-bit immediate data (displacement value: jdisp8) of an instruction code to
the start address of the following instruction is transferred to the program counter (PC) and branched. The
displacement value is treated as signed two’s complement data (–128 to +127) and bit 7 becomes a sign
bit. In other words, in relative addressing, the value is relatively transferred to the range between –128 and
+127 from the start address of the following instruction.
This function is carried out when the “BR $addr16” instruction or a conditional branch instruction is executed.
[Illustration]
15
0
PC
15
0
S
15
0
PC
+
8
7
6
α
jdisp8
When S = 0,
α
indicates all bits "0".
When S = 1,
α
indicates all bits "1".
... PC is the start address of
the next instruction of
a BR instruction.
相关PDF资料
PDF描述
780228 Common to 78K/0 Series
780308 Common to 78K/0 Series
780308Y Common to 78K/0 Series
78058FY Common to 78K/0 Series
78064B Common to 78K/0 Series
相关代理商/技术参数
参数描述
78-0208-5 制造商:Ideal Industries Inc 功能描述:PWR BIT,QUICK-CHANGE EXT,6"-5
780-20C-10K 制造商:VRN 功能描述:780-20C-10K
780-20C-205 制造商:Vernitron / Molex 功能描述:
78-021 功能描述:C-CL XHD 2-3/8 LNG SCR 制造商:apex tool group 系列:* 零件状态:在售 标准包装:1
78021 SL001 功能描述:15 Conductor Multi-Conductor Cable Slate 26 AWG 1000' (304.80m) 制造商:alpha wire 系列:EcoCable? Mini 零件状态:有效 电缆类型:多芯 导体数:15 线规:26 AWG 导线股数:19/38 导体材料:铜,镀锡 护套(绝缘)材料:聚苯醚(PPE) 护套(绝缘)直径:0.190"(4.83mm) 屏蔽类型:- 长度:1000'(304.80m) 套管颜色:瓦色 等级:ISO 10993,UL 式 21460 特性:生物相容性,拉绳 电压:300V 工作温度:-40°C ~ 80°C 使用:- 导体绝缘:聚苯醚(PPE) 护套(绝缘)厚度:0.015"(0.39mm) 屏蔽材料:- 屏蔽范围:- 标准包装:1