Analog Devices ADSP-2106x SHARC User Manual page 506

ALU Fixed-Point
B Compute Operations
Rn = Rx + Ry
Syntax:
Rn = Rx + Ry
Function:
Adds the fixed-point fields in registers Rx and Ry. The result is placed in
the fixed-point field in register Rn. The floating-point extension field in Rn
is set to all 0s. In saturation mode (the ALU saturation mode bit in
MODE1 set) positive overflows return the maximum positive number
(0x7FFF FFFF), and negative overflows return the minimum negative
number (0x8000 0000).
Status flags:
AZ Is set if the fixed-point output is all 0s, otherwise cleared
AU Is cleared
AN Is set if the most significant output bit is 1, otherwise cleared
AV Is set if the XOR of the carries of the two most significant adder
stages is 1, otherwise cleared
AC Is set if the carry from the most significant adder stage is 1,
otherwise cleared
AS Is cleared
AI Is cleared
B – 4
www.BDTIC.com/ADI