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BSET
Explanation of Example: Prior to execution, the 24-bit X location X:$FFE5 (I/O port C
data register) contains the value $000000. The execution of the BSET #$0,X:<<$FFE5
instruction tests the state of the 0
then sets the 0th bit in X:$FFE5.
Condition Codes:
15
14
13
LF
DM
CCR Condition Codes:
For destination operand SR:
C — Set if bit 0 is specified. Not affected otherwise.
V — Set if bit 1 is specified. Not affected otherwise.
Z — Set if bit 2 is specified. Not affected otherwise.
N — Set if bit 3 is specified. Not affected otherwise.
U — Set if bit 4 is specified. Not affected otherwise.
E — Set if bit 5 is specified. Not affected otherwise.
L — Set if bit 6 is specified. Not affected otherwise.
S — Set if bit 7 is specified. Not affected otherwise.
For destination operand A or B:
S —Computed according to the definition. See Notes on page A-63.
L — Set if data limiting has occurred. See Notes on page A-63.
E — Not affected
U — Not affected
N — Not affected
Z — Not affected
V — Not affected
C — Set if bit tested is set. Cleared otherwise.
MOTOROLA
INSTRUCTION DESCRIPTIONS
Bit Test and Set
th
bit in X:$FFE5, sets the carry bit C accordingly, and
12
11
10
9
T
**
S1
S0
I1
MR
INSTRUCTION SET DETAILS
8
7
6
5
4
I0
S
L
E
U
CCR
3
2
1
0
N
Z
V
C
A - 57
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