- Default value
- Parameter type
- Where set
- User 0 parameter line
- Related products
- Model 204 V7.4 or earlier
Control of the debugging options within Model 204.
Valid settings of DEBUGOPT, which can be summed, are as follows:
|X'01'||Implements GTRACE (GTF) for module mapping and subtask-to-maintask switching.|
|X'02'||Server swapping debugging facility.
If this option is specified, evaluations run within a special key restricted debug server instead of the normal server. This option may be used to find server swapping errors. This option causes increased CPU overhead.
|X'04'||Force debugging server swaps.
Server swaps may be swappable or non-swappable. Normally, a swappable server will remain within the running area unless the area is requested by a waiting user. If this option is specified, every non-swappable server swap will be forced into a new debug server, no matter whether it is requested or not. This option causes significant CPU overhead.
|X'08'||Server protection option.
This option turns on key protection for all servers.This option causes significant CPU overhead.
|X'10'||Komm protection option.
This option turns on key protection for all user Komm areas.
|X'20'||BTB disk buffer page sentinels.
This option adds a key protected storage page between each BTB disk buffer. This may significantly increase the storage required for BTB buffers. ATB buffers are uneffected by this bit.
|X'40'||Use normal access paths for ATB CCATEMP.
This option disables shortcut pathing when accessing ATB CCATEMP.
|X'80'||Dirty 64-bit registers.
For each quad being executed, set the high order word of each register to high values. This option is used to detect invalid 64-bit addressing within Model 204 source code.