24 Sep
2014
24 Sep
'14
4:20 p.m.
Thanks Al, that?s interesting. I must try and have a peek at those. They seem like hens
teeth, so I have lots of software manuals, but you only ever got one manual with the
machine. They never seemed to appear on the CD collections IBM published...
Dave
G4UGM
-----Original Message-----
From: cctalk-bounces at classiccmp.org [mailto:cctalk-bounces at classiccmp.org] On Behalf
Of Al Kossow
Sent: 24 September 2014 23:42
To: cctalk at classiccmp.org
Subject: Re: Inventory of remaining IBM S/360 CPU's.
On 9/24/14 3:07 PM, Dave G4UGM wrote:
I've put some of the 4331 docs up on bitsavers recently, including the operator's
manual.
I haven't quite gotten the time to scan and upload all the rest (MAPs, etc.)
> What do
you mean with "start up the main processor"? Doing an IPL?
Having read below I remember some of this now. All the later machines so the 43xx and
93xx series have some kind of control CPU and perform some kind of Initial Microcode Load
or IML at power up.