Motorola DSP56000 Manual page 390

24-bit digital signal processor
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JScc
Instruction Format:
JScc ea
Opcode:
23
0
0
0
0
Instruction Fields:
cc=4-bit condition code=CCCC,
ea=6-bit Effective Address=MMMRRR
Effective
Addressing Mode M M M R R R
(Rn)–Nn
0 0 0 r r r
(Rn)+Nn0
0 0 1 r r r
(Rn)–
0 1 0 r r r
(Rn)+
0 1 1 r r r
(Rn)
1 0 0 r r r
(Rn+Nn)
1 0 1 r r r
–(Rn)
1 1 1 r r r
Absolute address
1 1 0 0 0 0
where "rrr" refers to an address register R0–R7
Timing: 4+jx oscillator clock cycles
Memory: 1+ea program words
MOTOROLA
INSTRUCTION DESCRIPTIONS
Jump to Subroutine Conditionally
16
15
1
0
1
1
1
1
M
OPTIONAL EFFECTIVE ADDRESS EXTENSION
Mnemonic C C C C
CC (HS)
GE
NE
PL
NN
EC
LC
GT
INSTRUCTION SET DETAILS
8
7
M
M
R
R
R
1
0
Mnemonic C C C C
0 0 0 0
CS (LO)
0 0 0 1
LT
0 0 1 0
EQ
0 0 1 1
MI
0 1 0 0
NR
0 1 0 1
ES
0 1 1 0
LS
0 1 1 1
LE
JScc
0
1
0
C
C
C C
1 0 0 0
1 0 0 1
1 0 1 0
1 0 1 1
1 1 0 0
1 1 0 1
1 1 1 0
1 1 1 1
A - 121

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