Add Immediate - Analog Devices ADSP-BF53x Blackfin Reference

Instruction Overview

Add Immediate

General Form
register += constant
Syntax
Dreg += imm7 ;
Preg += imm7 ;
Ireg += 2 ;
increment (a) */
Ireg += 4 ;
Syntax Terminology
:
Dreg R7–0
: , ,
Preg P5–0 SP
:
Ireg I3–0
: 7-bit signed field, with the range of –64 through +63
imm7
Instruction Length
In the syntax, comment (a) identifies 16-bit instruction length.
Functional Description
The Add Immediate instruction adds a constant value to a register without
saturation.
To subtract immediate values from I-registers, use the Subtract
Immediate instruction.
The instruction versions that explicitly modify
optional circular buffering. See
15-16 ADSP-BF53x/BF56x Blackfin Processor Programming Reference
/* Dreg = Dreg + constant (a) */
/* Preg = Preg + constant (a) */
/* increment Ireg by 2, half-word address pointer
/* word address pointer increment (a) */
FP
Ireg
"Automatic Circular Addressing"
support