Multiplier Instruction Summary - Analog Devices ADSP-21261 SHARC Hardware Reference Manual

Multiply Accumulator (Multiplier)
Flag updates occur at the end of the cycle in which the status is generated
and is available on the next cycle. If a program writes the arithmetic status
register or sticky register explicitly in the same cycle that the multiplier is
performing an operation, the explicit write to
any flag update from the multiplier operation.

Multiplier Instruction Summary

Table 2-7 and
they relate to
ASTATx,y
assembly language syntax, see SHARC Processor Programming Reference. In
these tables, note the meaning of the following symbols:
• , ,
Rn Rx Ry
• , ,
Fn Fx Fy
floating-point
• * indicates the flag may be set or cleared, depending on results of
instruction
• ** indicates the flag may be set (but not cleared), depending on
results of instruction
• – indicates no effect
• The Input Mods column indicates the types of optional modifiers
that can be applied to the instruction inputs. For a list of modifiers,
see Table
2-28
Table 2-9 list the Multiplier instructions and describe how
and
STKYx,y
indicate any register file location; treated as fixed-point
indicate any register file location; treated as
2-8.
ADSP-2126x SHARC Processor Hardware Reference
or
ASTAT
flags. For more information on
supersedes
STKY