Re: 9335 CKD? was Re: PDOS/3x0 on real hardware

On 3/17/19 10:28 AM, Ivan Warren [email protected] [hercules-390] wrote:
>> What manual is this in? The only DASD that we have for our 9370
> systems are 9332s and 9335s (and 3rd party units that emulate them), and
> as we get closer to getting them running, I had thought they'd never run
> MVS (at least until we find different DASD) due to lack of CKD DASD.
>>
> Odd
> 
> The 9377 was especially designed to run MVS... So it must've had
> capability for CKD drives...
> 
> https://en.wikipedia.org/wiki/IBM_9370

  It's not a question of whether or not CKD DASD will work on a 9370;
they (can) have standard parallel channel interfaces so you can even
plug them into 3880+3380s if you want.  The question is whether or not
the 9332/9335 can function in CKD mode.  That wasn't something I had
ever considered as a possibility, and I'm quite excited about it, if it
is indeed possible.  The museum has several 9335s and 9332s, as well as
quite a few 3rd-party drives which emulate them, and I'd like to have a
wider variety of OSs available on our 9370s than just VM and VSE.

  I will go through the documentation early this week to see if I can
find out more about this.

              -Dave

-- 
Dave McGuire, AK4HZ
New Kensington, PA