Barrel Shifter (Shifter) - Analog Devices ADSP-21261 SHARC Hardware Reference Manual

Barrel Shifter (Shifter)

Table 2-8. Input Modifiers For Fixed-Point Multiplier Instruction
Input Input Mods—Options For Fixed-Point Multiplier Instructions
Mods from
Note the meaning of the following symbols in this table:
Table 2-7
Signed inputS
Unsigned inputU
Integer inputI
Fractional inputF
Fractional inputs, Rounded outputFR
Note that (SF) is the default format for one-input operations, and (SSF) is the default
format for two-input operations.
1 (SSF), (SSI), (SSFR), (SUF), (SUI), (SUFR), (USF), (USI), (USFR), (UUF), (UUI), or
(UUFR)
2 (SF), (SI), (UF), or (UI)
3 (SF) or (UF)
Table 2-9. Floating-Point Multiplier Instruction Summary
Instruction
Floating-Point:
Fn = Fx * Fy
Barrel Shifter (Shifter)
The shifter performs bit-wise operations on 32-bit fixed-point operands.
Shifter operations include:
• Shifts and rotates from off-scale left to off-scale right
• Bit manipulation operations, including bit set, clear, toggle, and
test
2-30
ASTATx,y Flags
MU MN
* *
ADSP-2126x SHARC Processor Hardware Reference
STKYx,y Flags
MV MI MUS MOS MVS
* * **
MIS
– ** **