Negate - Analog Devices adsp-2100 Manual

Z: Destination register
Xop: X operand
BO, CC, and YY specify the constant (see Appendix A, Instruction Coding).
Syntax:
[ IF cond ]
Permissible xops
AX0 MR2
AX1 MR1
AR MR0
SR1
SR0
Example:
IF LT AR = – AY0;
Description:
Test the optional condition and if true, then NEGATE the
source operand and store in the destination location. If the condition is not
true then perform a no-operation. Omitting the condition performs the
NEGATE operation unconditionally. The source operand is contained in
the data register specified in the instruction.
Status Generated:
ASTAT: 7 6
SS MV AQ AS
– –
AZ Set if the result equals zero. Cleared otherwise.
AN Set if the result is negative. Cleared otherwise.
AV Set if operand = H#8000. Cleared otherwise.
AC Set if operand equals zero. Cleared otherwise.
Instruction Format:
Conditional ALU/MAC Operation, Instruction Type 9:
23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
0 0 1 0 0
AMF specifies the ALU or MAC operation. In this case,
AMF = 10101 for –yop operation.
AMF = 11001 for –xop operation
COND: condition
AR = –
AF
Permissible yops
AY0
AY1
AF
5 4 3
AC AV AN AZ
– – *
Z AMF
xop ;
yop
Permissible conds (see Table 15.9)
EQ LE
NE NEG
GT POS
GE AV
LT NOT AV NOT CE
2 1 0
* * *
Yop Xop 0 0 0 0
ALU

NEGATE

AC
NOT AC
MV
NOT MV
COND
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