.-CSA24--=--0-----. >>-+-----------------+----------------------------------------->< '-CSA24--=--value-'
| range: | 0–16M |
Specifies the maximum amount of 24-bit addressable common service area (CSA) that can be used by VTAM®. This can be expressed as a number followed by a K (which represents 1024 bytes), or a number followed by an M (which represents 1048576 bytes). If you do not code M or K, K is assumed.
If VTAM does not explicitly request the storage location that you want and the operating system returns CSA addressable storage below the 16 MB line (24-bit addressable storage), the CSA24 limitations do not apply.
You can change the value of CSA24 with the MODIFY VTAMOPTS
command or the MODIFY CSALIMIT command while VTAM is running. The F operand of these commands
allows you to force the value specified to be used as the CSA usage
limit.
- CSA24=0
- Specifies that no limit is enforced on the amount of 24-bit addressable CSA used by VTAM.
- CSA24=value
- Specifies the maximum amount of CSA storage to be used by VTAM. value can
be specified in any of the following forms:
- nK
- n is the number of 1024-byte increments that is the maximum amount of 24-bit addressable CSA that can be used by VTAM. The value of n is rounded up to the next multiple of 4.
- qM
- q is the number of 1 MB increments that is the maximum amount of 24-bit addressable CSA that can be used by VTAM.