Analog Devices ADSP-21261 SHARC Hardware Reference Manual page 640

Core Registers
MIS
Multiplier Floating-Point
Invalid Operation
MUS
Multiplier Floating-Point Underflow
MVS
Multiplier Floating-Point Overflow
MOS
Multiplier Fixed-Point Overflow
Figure A-6. STKYy Register
Table A-5. STKYx and STKYy Register Bit Descriptions
Bit Name
0 AUS
1 AVS
2 AOS
4–3 Reserved
5 AIS
6 MOS
A-18
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
0 0 0 0 0 1 0
15 14 13 12 11 10 9
0 0 0 0 0 0 0
Description:  shows bits in both STKYx/y
 shows bits in STKYx only
ALU Floating-Point Underflow. A sticky indicator for the ALU
AZ bit. For more information, see "AZ" on page A-12.
ALU Floating-Point Overflow. A sticky indicator for the ALU AV
bit. For more information, see "AV" on page A-12.
ALU Fixed-Point Overflow. A sticky indicator for the ALU AV
bit. For more information, see "AV" on page A-12.
ALU Floating-Point Invalid Operation. A sticky indicator for the
ALU AI bit. For more information, see "AI" on page A-13.
Multiplier Fixed-Point Overflow. A sticky indicator for the mul-
tiplier MV bit. For more information, see "MV" on page A-13.
ADSP-2126x SHARC Processor Hardware Reference
1 0 1 0 0 0 0 0
8 7 6 5 4 3 2 1
0 0 0 0 0 0 0 0
0
0
0
AUS
ALU Floating-Point
Underflow
AVS
ALU Floating-Point
Overflow
AOS
ALU Fixed-Point
Overflow
AIS
ALU Floating-Point
Invalid Operation
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