Example 2, Instruction formats and opcodes, Instruction fields – Freescale Semiconductor StarCore SC140 User Manual
Page 495: Imac -d4,d5,d6
IMAC
SC140 DSP Core Reference Manual
A-181
–5
$FFFB
x 3
$0003
–15
$000F
+8
$0008
–7
$FFF9
Example 2
imac -d4,d5,d6
–42
$002A
x 11
$000B
–462
$FE32
+4096
$1000
3,634
$0E32
Instruction Formats and Opcodes
Note:
** indicates serial grouping encoding.
Instruction Fields
k
Accumulation Notation
Register/Memory Address
Before
After
D4
$00 1022 002A
D5
$FF FF3A 000B
L6:D6
$0:$00 0000 1000
$0:$00 0000 0E32
EMR
$0000 0000
$0000 0000
Instruction
Words Cycles Type
Opcode
15
8
7
0
IMAC
±Da,Db,Dn
1
1
1
0
*
1
0
1
0
F
F
F
k
0
J
J
J
J
J
15
8
7
0
IMAC
±Da,Da,Dn
1
1
1
0
*
1
0
1
0
F
F
F
1
1
0
k
1
j
j
0
add
1
subtract