Motorola DSP56000 Manual page 541

24-bit digital signal processor
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SBC
Condition Codes:
5
14
13
1
LF
DM
S — Computed according to the definition in A.5 CONDITION CODE COMPUTATION
L — Set if limiting (parallel move) or overflow has occurred in result
E — Set if the signed integer portion of A or B result is in use
U — Set if A or B result is unnormalized
N — Set if bit 55 of A or B result is set
Z — Set if A or B result equals zero
V — Set if overflow has occurred in A or B result
C — Set if a carry (or borrow) occurs from bit 55 of A or B result
Note: The definitions of the E and U bits vary according to the scaling mode being used.
Refer to Section A.5 CONDITION CODE COMPUTATION for complete details.
A - 272
INSTRUCTION DESCRIPTIONS
Subtract Long with Carry
12
11
10
9
T
**
S1
S0
I1
MR
INSTRUCTION SET DETAILS
8
7
6
5
4
I0
S
L
E
U
CCR
SBC
3
2
1
0
N
Z
V
C
MOTOROLA

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