>You are making me remember all the fun I had as an Assembler Programmer. MVI etc.

Ah, yes Tom.

My first "popular" Assembler program (with programmers) intercepted COBOL program abends on IBM 360/370's via a supervisor interrupt that "patched" the offending statement (in a natively compiled program) and reexecuted the statement before relinquishing control.

Compile and go-go-go ....

Wonderful stuff :)