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參數資料
型號: 78078Y
廠商: NEC Corp.
英文描述: Common to 78K/0 Series
中文描述: 共同的78K / 0系列
文件頁數: 20/129頁
文件大小: 644K
代理商: 78078Y
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.
相關PDF資料
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
相關代理商/技術參數
參數描述
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 連接器 1.0MM DDR3 DIMM SKT 240P V TH 2.67TL AU RoHS:否 制造商:Molex 產品類型:DIMM 系列:78588 節距:1 mm 位置/觸點數量:240 安裝風格:Through Hole 安裝角:Vertical 外殼材料:Thermoplastic 觸點材料:Copper Alloy 觸點電鍍:Gold 電壓額定值:29 V 電流額定值:1 A 長度:
780790002 制造商:Molex 功能描述:
78079-0002 功能描述:DDR3 / DDR2 / DDR 連接器 1mm DDR3 DIMM VtTH O O/Lub .38AuLF 240Ckt RoHS:否 制造商:Molex 產品類型:DIMM 系列:78588 節距:1 mm 位置/觸點數量:240 安裝風格:Through Hole 安裝角:Vertical 外殼材料:Thermoplastic 觸點材料:Copper Alloy 觸點電鍍:Gold 電壓額定值:29 V 電流額定值:1 A 長度:
78079-0011 功能描述:DDR3 / DDR2 / DDR 連接器 1mm DDR3 DIMM VtTH / /Lub .76AuLF 240Ckt RoHS:否 制造商:Molex 產品類型:DIMM 系列:78588 節距:1 mm 位置/觸點數量:240 安裝風格:Through Hole 安裝角:Vertical 外殼材料:Thermoplastic 觸點材料:Copper Alloy 觸點電鍍:Gold 電壓額定值:29 V 電流額定值:1 A 長度:
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