參數(shù)資料
型號: μPD70F3008
廠商: NEC Corp.
英文描述: 16/32 Bit Single Chip Microcontrollers(16/32 位單片微控制器)
中文描述: 16/32位單片機(jī)微控制器(16/32位單片微控制器)
文件頁數(shù): 93/141頁
文件大小: 374K
代理商: ΜPD70F3008
81
CHAPTER 5 INSTRUCTION
Explanation
(1) Adds the 16-bit displacement, sign-extended to word length, to the data of general register
reg1 to generate a 32-bit address, and stores the lowest byte data of general register reg2
to the generated address.
(2) Adds the 16-bit displacement, sign-extended to word length, to the data of general register
reg1 to generate a 32-bit address, and stores the lower half-word data of general register
reg2 to the generated 32-bit address with bit 0 masked to 0. Therefore, stored data is
automatically aligned on a half-word boundary.
(3) Adds the 16-bit displacement, sign-extended to word length, to the data of general register
reg1 to generate a 32-bit address, and stores the word data of general register reg2 to the
generated 32-bit address with bits 0 and 1 masked to 0. Therefore, stored data is
automatically aligned on a word boundary.
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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