Motorola DSP96002 - Manual (Page 386)

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JOIN Join Two 16-bit Integers JOIN
11 0sss 1010 0ddd
31 14 13 0
OPTIONAL EFFECTIVE ADDRESS EXTENSION OR IMMEDIATE LONG DATA
DATA BUS MOVE FIELD
Operation:
S.L {15:0}
→
D.L {31:16}
(parallel data bus move)
D.L {15:0}
→
D.L {15:0}
Assembler Syntax:
JOIN S,D
(move syntax - see the Move instruction description.)
Description:
Transfer the 16 LSBs of the lower portion of source operand S into the 16 MSBs of the lower portion of
destination D. The 16 LSBs of the lower portion of D remain unchanged.
Input Operand(s) Precision: 16-bit integer.
Output Operand Precision: 32-bit integer.
CCR Condition Codes:
C - Not affected.
V - Always cleared.
Z - Set if result is zero. Cleared otherwise.
N - Set if result is negative. Cleared otherwise.
I - Not affected.
LR - Not affected.
–
R - Not affected.
A - Not affected.
ER Status Bits: Not affected.
IER Flags: Not affected.
Instruction Format: JOIN S,D (move syntax - see the Move instruction description.)
Instruction Fields:
(u u)
D d d d
Dn.L n n n where nnn = 0-7
S s s s
Dn.L n n n where nnn = 0-7
Timing: 2 + mv oscillator clock cycles
Memory: 1 + mv program words