Atmel Evaluation Kit for the SAM4E Series of Flash Microcontrollers ATSAM4E-EK ATSAM4E-EK Data Sheet

131

SAM4E [DATASHEET]

Atmel-11157D-ATARM-SAM4E16-SAM4E8-Datasheet_12-Jun-14

Select Bytes. Selects each byte of its result from either its first operand or its second operand, according to the
values of the GE flags.

Syntax

SEL{<c>}{<q>} {<Rd>,} <Rn>, <Rm>

where:

c, q

are standard assembler syntax fields.

Rd

is the destination register.

Rn

is the first register holding the operand.

Rm

is the second register holding the operand.

Operation

The 

SEL

 instruction:

1.

Reads the value of each bit of APSR.GE.

2.

Depending on the value of APSR.GE, assigns the destination register the value of either the first or second 
operand register.

Restrictions

None.

Condition Flags

These instructions do not change the flags.

Examples

SADD16 R0, R1, R2

 ; Set GE bits based on result

SEL

R0, R0, R3

; Select bytes from R0 or R3, based on GE.