Re: Documentation for reading JES2

On 03/14/2010 02:41 PM, Roger Bowler wrote:
> Gerhard Postpischil wrote:
>   
>> As far as I know, there is no available documentation on JES2 
>> internals; I'm not even aware of anything for HASP, but I never 
>> looked for any. Your best bet is to assemble the modules in 
>> SYS1.HASPSRC (doubles as a macro library), start with HASPINIT, 
>> then HASPRDR, then HASPPRPU. Those should show you the basics of 
>> how job information is created and used.
>>     
> I almost weep when I think that for lack of storage space in 1997, along 
> with shelves and shelves of stuff, I threw out my HASP manual - glossy 
> turquoise covers containing about 1000 pages printed in courier font, bound 
> together with brass screws, about 3 inches thick.
>
> AFAICR it did not cover internals though, as Gerhard says you had to study 
> the assembly listings for that.
>
>   
   I hear you on that.  For me some were destroyed when the basement
flooded and some manuals were lost.
   I did take the JES2 internals course back in the mid 1980's but it
didn't cover the old JES2 system.  In addition the instructor nor the
manual (which I might still have) cover how to do the unusual things
like reading the checkpoint outside of JES2.  Yes, going to have to go
back and look at the source code to look at how they do things and try
them out.  A good way to learn though a bit difficult at times.