Author: steve-myers
Posted: Tue May 09, 2017 5:35 pm (GMT 5.5)
Next, I'd try to construct the instructions from the DATA AT PSW area. I get
----5000
7D20D124
7020D100
4180----
The 7D20D124 appears to be the failing instruction, which tracks to the S0CF ABEND code. The 7020D100 instruction also seems reasonable to follow the 7D instruction. I had to go to Principles of Operation to lookup both instructions. 4180 (which I didn't have to lookup) also seems legitimate
Regardless, I'm probably just spinning my wheels here, since you likely have a wild branch to what may be legitimate code, but I could be wrong! That's all I'm going do here; you have plenty of leads to research.
Posted: Tue May 09, 2017 5:35 pm (GMT 5.5)
Next, I'd try to construct the instructions from the DATA AT PSW area. I get
----5000
7D20D124
7020D100
4180----
The 7D20D124 appears to be the failing instruction, which tracks to the S0CF ABEND code. The 7020D100 instruction also seems reasonable to follow the 7D instruction. I had to go to Principles of Operation to lookup both instructions. 4180 (which I didn't have to lookup) also seems legitimate
Regardless, I'm probably just spinning my wheels here, since you likely have a wild branch to what may be legitimate code, but I could be wrong! That's all I'm going do here; you have plenty of leads to research.