Ed Gould wrote:
> I think you are correct. SPF was developed here in Chicago at a ladies
> undergarment maker. My mind is sketchy though whether it was written by
> an IBM se or it could have been a joint effort. I remember our SE
> trying to sell it to us. but we were out of gas, CPU wise and we
> settled for FSE. I mean we were *REALLY* out of gas on our 168MP. Our
> paging rate was out of sight as well. Memory in those days (IIRC) was
> $10K (US) a meg and we just couldn't afford any more.
>
> My vague recollect is that we were maxed out of memory on the 168MP,
> IIRC the max was 16 meg it should have been 32 m but there was some
> issue with the MP box that didn't allow that large of memory. Its' been
> 30 years so my memory could be wrong.
>
> I think we went with a 3033 about 6 months later. They sort of looked
> at an AP after converting to the 3033 but we just went with another
> 3033
>
> I know that IBM was sent many a stand alone dump and they always came
> back with "You are out of gas and need more memory" tell us something
> we didn't know.
370s were limited to 24bit real & 24bit virtual addressing. two
processor smp machines could be cleaved in half and operated as two
independent machines (but two processor smp configuration was still
limited to 16mbyte real)
370/158 had integrated channels ... the microcode engine was shared
between between integrated channel microcode and 370 microcode. for
303x, they took 158 microcode engine kept the integrated channel
microcode and removed the 370 microcode ... for the 303x channel
director. the 3031 was the 158 engine with just the 370 microcode engine
and the integrated channel m'code removed. A uniprocessor 3031 is sort
of a two processor smp ... with one engine dedicated to 3031 370
microcode and one engine dedicated to 303x channel director.
3032 was 168-3 reconfigured to use the 303x channel director.
3033 started out being the 168 wiring diagram mapped to faster chip
technology. this started out being approx. 20percent faster than 168.
however some re-optimization of the circuits eventually resulted in the
3033 being about 50percent faster than 168.
pok had an interestion situation with endicott and 4341s. 4341 was
faster and cheaper than 3031 ... and cluster of six 4341s were faster
than 3033 and also cheaper (96mbytes aggregate and total 36 channels).
two separate 3033s could each have max. of 16mbytes (32mbyte max) ...
but a two-processor 3033 smp was limited to 16mbytes max.
3033 eventually announced a hack to get 32mbyte real memory. 370 page
table entry was 16bits, 12bits for (4k) page numers (4096 4kpages,
16mbytes total), two additional defined bits, two undefined bits.
virtual addressing was 24bits, real addressing was (mostly) 24bits, but
they took one of the undefined bits to allow for 8192 4k (real) pages
(32mbyte total). there was still stuff that had to be below the 16mbyte
(real) line ... but you could have virtual pages above the 16mbyte line
and use idal CCWs to do i/o above the line. there was some hacks to move
pages from above the line to below the line (when necessary).
annc. avail.
IBM 3033 77-03 78-03 12 VERY LARGE S/370+EF INSTRUCTIONS
IBM 3033MP 78-03 79-09 18 MULTIPROCESSOR OF 3033
IBM 3033AP 80-06 80-08 02 3033 ATTACHED PROCESSOR
IBM 3033 80-06 81-10 16 Ext. Addr.=32MB REAL ADDR.;MP ONLY
misc. past posts that mention 4341 and 3033
http://www.garlic.com/~lynn/95.html#3 What is an IBM 137/148 ???
http://www.garlic.com/~lynn/99.html#7 IBM S/360
http://www.garlic.com/~lynn/99.html#110 OS/360 names and error codes
(was: Humorous and/or Interesting Opcodes)
http://www.garlic.com/~lynn/99.html#112 OS/360 names and error codes
(was: Humorous and/or Interesting Opcodes)
http://www.garlic.com/~lynn/2000c.html#83 Is a VAX a mainframe?
http://www.garlic.com/~lynn/2000d.html#7 4341 was "Is a VAX a mainframe?"
http://www.garlic.com/~lynn/2000d.html#12 4341 was "Is a VAX a mainframe?"
http://www.garlic.com/~lynn/2000d.html#82 "all-out" vs less aggressive
designs (was: Re: 36 to 32 bit transition)
http://www.garlic.com/~lynn/2000e.html#57 Why not an IBM zSeries
workstation?
http://www.garlic.com/~lynn/2001b.html#69 Z/90, S/390, 370/ESA (slightly
off topic)
http://www.garlic.com/~lynn/2001i.html#13 GETMAIN R/RU (was: An IEABRC
Adventure)
http://www.garlic.com/~lynn/2001j.html#3 YKYGOW...
http://www.garlic.com/~lynn/2001l.html#32 mainframe question
http://www.garlic.com/~lynn/2001m.html#15 departmental servers
http://www.garlic.com/~lynn/2001n.html#39 195 was: Computer Typesetting
Was: Movies with source code
http://www.garlic.com/~lynn/2002b.html#2 Microcode? (& index searching)
http://www.garlic.com/~lynn/2002d.html#7 IBM Mainframe at home
http://www.garlic.com/~lynn/2002f.html#8 Is AMD doing an Intel?
http://www.garlic.com/~lynn/2002i.html#22 CDC6600 - just how powerful a
machine was it?
http://www.garlic.com/~lynn/2002i.html#23 CDC6600 - just how powerful a
machine was it?
http://www.garlic.com/~lynn/2002n.html#58 IBM S/370-168, 195, and 3033
http://www.garlic.com/~lynn/2002n.html#59 IBM S/370-168, 195, and 3033
http://www.garlic.com/~lynn/2002n.html#63 Help me find pics of a UNIVAC
please
http://www.garlic.com/~lynn/2002p.html#59 AMP vs SMP
http://www.garlic.com/~lynn/2002q.html#27 Beyond 8+3
http://www.garlic.com/~lynn/2002q.html#29 Collating on the S/360-2540
card reader?
http://www.garlic.com/~lynn/2003.html#14 vax6k.openecs.org rebirth
http://www.garlic.com/~lynn/2003.html#67 3745 & NCP Withdrawl?
http://www.garlic.com/~lynn/2003c.html#77 COMTEN- IBM networking boxes
http://www.garlic.com/~lynn/2003d.html#33 Why only 24 bits on S/360?
http://www.garlic.com/~lynn/2003f.html#50 Alpha performance, why?
http://www.garlic.com/~lynn/2003f.html#56 ECPS:VM DISPx instructions
http://www.garlic.com/~lynn/2003g.html#22 303x, idals, dat, disk head
settle, and other rambling folklore
http://www.garlic.com/~lynn/2003i.html#5 Name for this early transistor
package?
http://www.garlic.com/~lynn/2003j.html#2 Fix the shuttle or fly it unmanned
http://www.garlic.com/~lynn/2003l.html#31 IBM Manuals from the 1940's
and 1950's
http://www.garlic.com/~lynn/2004.html#7 Dyadic
http://www.garlic.com/~lynn/2004.html#8 virtual-machine theory
http://www.garlic.com/~lynn/2004d.html#12 real multi-tasking,
multi-programming
http://www.garlic.com/~lynn/2004g.html#20 Infiniband - practicalities
for small clusters
http://www.garlic.com/~lynn/2004j.html#57 Monster(ous) sig (was Re:
Vintage computers are better
http://www.garlic.com/~lynn/2004l.html#10 Complex Instructions
http://www.garlic.com/~lynn/2004m.html#17 mainframe and microprocessor
http://www.garlic.com/~lynn/2004n.html#14 360 longevity, was RISCs too
close to hardware?
http://www.garlic.com/~lynn/2004n.html#50 Integer types for 128-bit
addressing
http://www.garlic.com/~lynn/2004o.html#57 Integer types for 128-bit
addressing
http://www.garlic.com/~lynn/2005.html#34 increasing addressable memory
via paged memory?
http://www.garlic.com/~lynn/2005d.html#62 Misuse of word "microcode"
http://www.garlic.com/~lynn/2005f.html#4 System/360; Hardwired vs.
Microcoded
http://www.garlic.com/~lynn/2005m.html#25 IBM's mini computers--lack thereof
http://www.garlic.com/~lynn/2005n.html#11 Code density and performance?
http://www.garlic.com/~lynn/2005n.html#29 Data communications over
telegraph circuits
http://www.garlic.com/~lynn/2005p.html#1 Intel engineer discusses their
dual-core design
http://www.garlic.com/~lynn/2005p.html#19 address space
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