Re: Documentation for reading JES2

> 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.

Until about 1985, IBM taught a JES2 Internals class.  There
are probably class materials for it somewhere, but not currently
online.

The JES2 logic manual is:

  SY24-6000 OS/VS2 JES2 4.1 Logic

which is the Holy Grail of my manual quest.  I had it once, but
it's gone.

The HASP V4 logic manual is at bitsavers:

  http://computer-refuge.org/bitsavers/pdf/ibm/370/hasp/GY27-7255-0_HASP_II_Version_4_Logic_Sep76.pdf

There are significant differences between JES2 and HASP
-- in particular, JES2 is integrated into the operating
system through the subsystem interface while HASP intercepts
requests for spooled input/output by pretending to be
unit record devices.  Reading the HASP manual will give
you a general idea of process flow, but keep in mind it's
not going to be a perfect match for the JES2 environment.

> 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.

There's a member JES2JOB in SYS1.PROCLIB that assembles
all JES2 source modules including HASPDOC, which expands
all JES2 control blocks.  JES2JOB is really a job, not a
proc, so you can't just say "START JES2JOB"; you need to
punch it and submit it as a job.  It executes a proc
called HASPASM, also found in SYS1.PROCLIB, which as
it stands wants to create text decks in a SYS1.HASPOBJ
data set.  If all you want is to generate listings, 
create your own HASPASM proc with the assembler parm
changed from DECK to NODECK and the SYSPUNCH DD statement
deleted.

-- 
Kevin