Dear List:

An IBM 4361 Model Group 5 had the ECPS feature - 

Extended Control Program Support (ECPS) -- offers VSE mode, VM/370 mode, and 
MVS/370 mode. These modes provide microcode assists that make the system 
control programs operate more efficiently.

HITACHI
 DATA SYSTEMS 
Raymond E. Noal 
Senior Technical Engineer 
Office: (408) 970 - 7978 

-----Original Message-----
From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of Ed 
Gould
Sent: Wednesday, September 26, 2007 6:09 PM
To: [email protected]
Subject: Re: Writing 23FDs

On Sep 26, 2007, at 2:59 PM, Farley, Peter x23353 wrote:
--------SNIP------------------
>
> IIRC 4331's were introduced along with a supposedly "user-friendly",
> "simpler" version of DOS/VSE that IBM labeled SSX/VSE.  It had a  
> LOT more
> menu-driven configuration and administration screens than regular  
> DOS/VSE,
> all running under ICCF.  It was supposed to be possible for a  
> normal COBOL
> programmer or even a savvy "end user" to maintain the machine.
>
> Not that you couldn't run regular DOS/VSE on a 4331, but I  
> understand quite
> a number were sold in special packages including SSX/VSE.  Though  
> another
> vague memory also says that those "package" deals came with FBA  
> disks (3310
> or 3370) instead of CKD 3350's, so perhaps your copy is regular DOS/ 
> VSE
> after all.
>
> Thanks for bringing up some fond memories!
>
> Peter
>


Peter,

IIRC there was a feature (I do not remember the exact details maybe  
someone else on the list can) that there was a hardware assist ecps?  
its been a long time I don't recall the details (nor care to). Yes  
the 3310 were FBA (as well as the 3370's). We had one as a toy and  
were not impressed with the speed.

Ed

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