gtpm6m0zMain Supervisor Reference

Types of System Errors

System errors can occur either in application programs, or in the TPF control program.

Application Program Errors

Application program errors are errors in logic detected during processing. These errors relate to an application, that is, an ECB. The application detects the error and chooses the necessary corrective action. When an application detects an error, it can either:

Either the SNAPC or SERRC macro tells the control program which option the application requests.

Control Program Errors

Control program errors may or may not be associated with an ECB. These errors occur for these reasons:

The system operator can also request a control program dump with the ZDUMP command, or by depressing the system restart key (O2 on the OPRCTL frame). This is referred to as a manual dump.