Instructions fun 137 subr subroutine entry – Toshiba 6F3B0253 User Manual
Page 209
6F3B0253
Basic Hardware and Function
207
7. Instructions
FUN 137
SUBR
Subroutine entry
Expression
−
[ SUBR (n) ]
−−
Function
This instruction indicates the begging of a subroutine.
Execution condition
Input
Operation
Output
-
Execution
-
Operand
Name
Device
Register
Constant Index
X
Y
R
S
T.
C. XW YW RW SW T
C
D
I
J
K
n Subroutine
number
√
(Note)
Example
The begging of the subroutine number 8 is indicated.
Main program
Subroutine
| | [ CALL N.008 ]
[ SUBR (008)]
[ RET ]
Note
•
The possible subroutine number is 0 to 15 (T1) or 0 to 255 (T1S).
•
Refer to the CALL instruction (FUN 128) and the RET instruction (FUN 129).
•
The SUBR instruction can be programmed only in the program type ‘Subroutine’.
•
Nesting
of
subroutine is not allowed. That is, the CALL instruction cannot be used in a
subroutine.
•
No other instruction cannot be placed on the rung of the SUBR instruction.