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308
Comparison Instructions
Section 3-7
Description
CMPL(060) compares the unsigned binary data in S
1
+1, S
1
and S
2
+1, S
2
and outputs the result to Arithmetic Flags (the Greater Than, Greater Than or
Equal, Equal, Less Than or Equal, Less Than, and Not Equal Flags) in the
Auxiliary Area.
Arithmetic Flag Status
The following table shows the status of the Arithmetic Flags after execution of
CMPL(060). (A status of “---” indicates that the Flag may be ON or OFF.)
Using CMPL(060) Results in the Program
When CMPL(060) is executed, the result is reflected in the Arithmetic Flags.
Control the desired output or right-hand instruction with a branch from the
same input condition that controls CMPL(060), as shown in the following dia-
gram. Here, the Equals Flag and output A will be turned ON when S
1
+1, S
1
=
S
2
+1, S
2
.
Using CMPL(060) Results in the Program
Do not program another instruction between CMPL(060) and the instruction
controlled by the Arithmetic Flag because the other instruction might change
the status of the Arithmetic Flag. In this case, the results of instruction B might
change the results of CMPL(060).
CMPL(060)Result
Flag status
>
> =
=
< =
<
< >
S
1
+1, S
1
> S
2
+1, S
2
ON
ON
OFF
OFF
OFF
ON
S
1
+1, S
1
= S
2
+1, S
2
OFF
ON
ON
ON
OFF
OFF
S
1
+1, S
1
< S
2
+1, S
2
OFF
OFF
OFF
ON
ON
ON
(>, >=, =, <=, <, <>)
S2+1
Unsigned binary
comparison
Arithmetic Flags
CMPL
S1
S2
A
Correct Use of CMPL(060)
Arithmetic Flag
(Example: Equal Flag)
Summary of Contents for SYSMAC CS1D-CPU**
Page 3: ...iv...
Page 29: ...xxx...
Page 185: ...146 List of Instructions by Function Code Section 2 4...
Page 1389: ...1350 CJ series Instruction Execution Times and Number of Steps Section 4 2...
Page 1390: ...1351 Appendix A ASCII Code Table ASCII SP Four leftmost bits Four rightmost bits...
Page 1391: ...1352 ASCII Code Table Appendix A...