參數(shù)資料
型號: μPD703008
廠商: NEC Corp.
英文描述: 16/32 Bit RISC Microcontrollers(16/32位RISC微控制器)
中文描述: 16/32位RISC微控制器(16/32位的RISC微控制器)
文件頁數(shù): 64/141頁
文件大?。?/td> 374K
代理商: ΜPD703008
CHAPTER 5 INSTRUCTION
52
Explanation
(1) Adds the data of general register reg1 to a 16-bit displacement, sign-extended to word
length, to generate a 32-bit address. Byte data is read from the generated address, sign-
extended to word length, and then stored to general register reg2.
(2) Adds the data of general register reg1 to a 16-bit displacement sign-extended to word
length to generate a 32-bit address. Half-word data is read from this 32-bit address with
its bit 0 masked to 0, sign-extended to word length, and stored to general register reg2.
(3) Adds the data of general register reg1 to a 16-bit displacement sign-extended to word
length to generate a 32-bit address. Word data is read from this 32-bit address with bits
0 and 1 masked to 0, and stored to general register reg2.
Caution
When the data of general register reg1 is added to a 16-bit displacement sign-extended to word
length, the lower bits of the result may be masked to 0 depending on the type of data to be
accessed (half word, word) to generate an address.
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