Last time I visited IDF didn’t debug code in supervisor state 

> On Sep 13, 2023, at 4:02 PM, Steve Thompson <ste...@wkyr.net> wrote:
> 
> Noobies who don't want to know history and the like, just delete this....
> 
> As to z/XDC and priv code and/or key zero storage -- oh the ease and joy of 
> not being forced to use TEST Auth. Or having to set some SLIP, get a dump, or 
> do SNAPs...
> 
> I wish I could be cursed with having to use z/XDC again. Stepping through 
> code.... But don't do that on a production machine -- sand box only (for 
> setting traps in LPA and the like. Yes, you can set traps in SVCs and PCs and 
> the like) -- just be very careful or you can kill the system right out from 
> under you (read the very good manual, it lists things you do at your own 
> risk).
> 
> I can't tell you how much I enjoyed XDC, and then z/XDC. Dave.C, may you live 
> forever.
> 
> Steve Thompson
> 
> On 9/13/2023 3:40 PM, Tom Marchant wrote:
>>> only TESTAUTH let’s you debug code with PSW bit 15 being 0
>> Obviously you haven't tried z/XDC.
>> 
>>> All I want is to debug a program that was preloaded under a different TCB
>> Have you considered using CSVDYLPA to load in into dynamic LPA? Probably 
>> overkill for your purposes, but you can do it so that it will stay after 
>> task termination.
>> 
> 
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