HLASM Language Reference

&SYSOPT_DBCS System Variable Symbol
MACRO
OUTER
DC A(&SYSNEST) Statement 1
INNER1 Statement 2
INNER2 Statement 3
MEND
MACRO
INNER1
DC A(&SYSNEST) Statement 4
INNER2 Statement 5
MEND
MACRO
INNER2
DC A(&SYSNEST) Statement 6
MEND
--------------------------------------------------------------------
OUTER Statement 7
+ DC A(1)
+ DC A(2)
+ DC A(3)
+ DC A(2)
Statement 7 is in open code. It calls the macro OUTER. &SYSNEST is assigned a
value of 1 which is substituted in statement 1.
Statement 2, within the macro definition of OUTER, calls macro INNER1. The value
assigned to &SYSNEST is incremented by 1. The value 2 is substituted for
&SYSNEST in statement 4.
Statement 5, within the macro definition of INNER1, calls macro INNER2. The value
assigned to &SYSNEST is incremented by 1. The value 3 is substituted for
&SYSNEST in statement 6.
When the macro INNER2 exits, the value assigned to &SYSNEST is decremented by
1. The value of &SYNEST is 2.
When the macro INNER1 exits, the value assigned to &SYSNEST is decremented by
1. The value of &SYSNEST is 1.
Statement 3, within the macro definition of OUTER, calls macro INNER2. The value
assigned to &SYSNEST is incremented by 1. The value 2 is substituted for
&SYSNEST in statement 6.
&SYSOPT_DBCS System Variable Symbol
You can use &SYSOPT_DBCS to determine if the DBCS assembler option was
supplied for the assembly of your source module. &SYSOPT_DBCS is a Boolean
system variable symbol, and has a global scope.
If the DBCS assembler option was specified, &SYSOPT_DBCS is assigned a value
of 1. If the DBCS assembler option was not specified, &SYSOPT_DBCS is
assigned a value of 0.
284 HLASM V1R5 Language Reference