Thanks to Peter and Philippe for getting me started with ASMIDF. I was a z/XDC user for 20 years, and I got used to source level debugging.
A couple of comments about ASMIDF. I can set breakpoints on CSECTs, V-Cons, and ENTRY names, but I can not set breakpoints on DS 0H statements like in TSO TEST. Also, the number of breakpoints active at once appears to be limited to around 140 (with a 2G TSO region). Please share anything that will enhance my understanding and use of the tool. Regards, John K
