Datasheet

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SAM3X / SAM3A [DATASHEET]
Atmel-11057C-ATARM-SAM3X-SAM3A-Datasheet_23-Mar-15
10.12.3.5 Examples
STR R0, [R5, R1] ; Store value of R0 into an address equal to
; sum of R5 and R1
LDRSB R0, [R5, R1, LSL #1] ; Read byte value from an address equal to
; sum of R5 and two times R1, sign extended it
; to a word value and put it in R0
STR R0, [R1, R2, LSL #2] ; Stores R0 to an address equal to sum of R1
; and four times R2