Datasheet

158
SAM4S Series [DATASHEET]
11100F–ATARM–29-Jan-14
QASX R7, R4, R2 ; Adds top halfword of R4 to bottom halfword of R2,
; saturates to 16 bits, writes to top halfword of R7
; Subtracts top highword of R2 from bottom halfword of
; R4, saturates to 16 bits and writes to bottom halfword
; of R7
QSAX R0, R3, R5 ; Subtracts bottom halfword of R5 from top halfword of
; R3, saturates to 16 bits, writes to top halfword of R0
; Adds bottom halfword of R3 to top halfword of R5,
; saturates to 16 bits, writes to bottom halfw
ord of R0.
12.6.7.5 QDADD and QDSUB
Saturating Double and Add and Saturating Double and Subtract, signed.