gtpm1m1lTPF V4R1 Migration Guide: 3.1 to 4.1

Receiving Messages from the Online General File Loader (ACPL)

In the TPF 4.1 system, the online general file loader (ACPL) writes messages to the console using dedicated input/output (I/O) routines in the control program because the WTOPC facility is not yet available to the system. These messages will be highlighted on the 3270 console, and the console alarm will sound (resembling system error messages).