SLAU131V October 2004 – February 2020
You can manipulate substitution symbols with the .asg and .eval directives.
For the .asg directive, the quotation marks are optional. If there are no quotation marks, the assembler reads characters up to the first comma and removes leading and trailing blanks. In either case, a character string is read and assigned to the substitution symbol. The syntax of the .asg directive is:
.asg["]character string["], substitution symbol |
Example 3 shows character strings being assigned to substitution symbols.