Instruction formats and opcodes instruction fields – Freescale Semiconductor StarCore SC140 User Manual
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A-206
SC140 DSP Core Reference Manual
JF
Instruction Formats and Opcodes
Instruction Fields
Rn
RRR
Address Register
d1
$00 0000 0000
$00 0000 0029
d2
$00 0000 0000
$00 0000 0000
d4
$00 0000 0000
$00 0000 001A
pc
$0000 0006
$0000 0016
Instruction
Words
Cycles
1
Note 1: If the branch is not taken, it uses 1 cycle. If the branch is taken, it uses 4 cycles.
Type
Opcode
15
8
7
0
JF label
3
1/4
3
0
0
1
1
0
1
1
1
A
A
A
a
a
1
0
0
0
0
1
A
A
A
A
A
A
A
A
A
A
A
A
A
1
0
a
a
a
a
a
a
a
a
a
a
a
a
a
a
15
8
7
0
JF Rn
1
1/4
4
1
0
0
1
1
R R R
0
1
1
0
0
1
1
1
000
R0
010
R2
100
R4
110
R6
001
R1
011
R3
101
R5
111
R7
Note:
This instruction can specify R8-R15 as operands by using a high register prefix.
label
aaaaaaaaaaaaaaaaAAAAAAAAAAAAAAAA
32-bit absolute long address
Note:
Label must be word-aligned, LSBit = 0.
Register/Memory Address
Before
After