[rescue] Mainframe on eBay
ploopster at gmail.com
Mon Sep 19 15:18:38 CDT 2005
Jonathan C. Patschke wrote:
> > I've found that the only non-IBM PC chipset the P/390 PCI works in is
> > the i450NX. Pretty rare chipset, on the grand scheme of things.
> Yes, but PC Server 500 systems show up for cheap from time-to-time.
Actually, the PC Server 500 is for the MCA P/390's. They are PS/2 Model
9595's (AKA PS/2 Server 95 or PS/2 95A) in a bigger case with a RAID
cage. (I tend to prefer the 9595 case over the 500 case. The
motherboards are interchangeable, and the 9595 case can be rackmounted.)
The PCI P/390's sit in a PC Server 325 or a PC Server 330. They're
basically the same machine, except the PC Server 330 is a full-size
tower, whereas the PC Server 325 is a midtower convertable to a 4U(?)
rackmount. Rackmount P/390 is goodness.
> > I know next to nothing about AS/400's and their predecessors. Except
> > that they're EBCDIC and use shared-memory processes which is just
> > strange enough to warm my heart.
> I know very little about them, and unfortunately, my specimen is dead
> enough so as only to serve as a TV stand (which is does exceedingly
> well, being heavy IBM kit). I mostly-disassembled it once and never
> found anything that I could immediately identify as a processor complex.
> It may not even be complete.
> Working for the State gave me enough time on MVS to really want to play
> with it, but I've never been anywhere that ran OS/400. Given how
> instrumental it was in business data processing 20 years ago, I feel I'm
> missing out on something that, while hairy and weird, may be quite
I would still call it significant. It's still used all over the place.
Stereotypically, banks use MVS and insurance companies use OS/400.
MVS isn't actually my favorite OS. It can get a little bloaty. I
prefer VSE. Plus I am a whizz at assembler programming under VSE.
> > What's your boss's name?
> Glenn Henry.
I'll look him up in Who's Who in IBM. Might be fun to read about him. 8-)
>  Some power-circuitry weirdness keeps it from IPLing. It might just
> be an open in the internal battery pack.
If you give me type-model, I might be able to dig up some documentation.
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