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Re: OSVS1 on IBM360 SimH - errors on sysgen


 

Hi,

Roberto has been helping me out with the setup of auto install
procedures for installing various operation systems on IBM360
simulator. These are very helpful to me since they allow for
efficient testing of changes to the simulator. They also provide
good documentation on how to setup and install these systems. I have
similar systems set of for my PDP10 and IBM 7090 and B5500
simulators. I also try and install the generally useful software
onto the systems. This also documents how to install these packages.
While the turnkey kits are nice, it is hard to know what PTF's and
other things are installed. Also it is difficult to change things to
suite your needs.

SimH based simulator for IBM360 provides emulation for both IBM360
and IBM370 systems. It is very configurable compared to Hercules. It
can simulate a 360 with 16K of memory up to a 370 with 16MB of
memory. It can also simulate a 360/67 that can run early versions of
MTS. It is targeted toward small systems compared to Hercules which
more geared towards larger systems.

SimH can use uncompressed CKD Hercules disks. However it does not
allow for the infinite configuration that Hercules does some systems
do not work since they define too large a machine. Currently SimH
IBM360 will run BOS/TOS/DOS/OS/360. VM/370, MTS. MVS has some issues
that I am unable to figure out.

Rich

It would appear that your link editor requires a change or perhaps
larger memory allocated to the system. I have never worked with this
system so have no idea with regard to the specifics.

But your email did trigger a different question...

I have been working with SimH doing some bare-metal programs. My
understanding was that Hercules DASD images would work with SimH.
Have not actually tried it, yet.

Did you assume the DASD image would not work, or did you try it and it
did not.

I feel your pain. Configuration is not at all like Hercules so that
can be a challenge.

Harold Grovesteen

On Wed, 2021-10-27 at 02:47 -0700, rsanchovilla@... wrote:
Hi All

I'm trying to sysgen Kevin Leonard 's OS/VS1 Release 6 from on
Richard Cornwell IBM360 simulator, based on SimH
As It is not hercules, I must start with .aws tape instead of
already made starter system dasd








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