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UNISYS U6000/50 Help needed! :)
Post 302720217 by asbesto on Tuesday 23rd of October 2012 03:45:05 PM
10-23-2012
UNISYS U6000/50 Help needed! :)
Hi all,
here at our computer museum in Palazzolo Acreide, Italy, we're trying to restore this ancient UNISYS server: (some picture here)
wiki DOT museo DOT freaknet DOT org/?title=UNISYS_U6000/50
(sorry I can't post any URL)
We have casual memory errors but we tested every single SIMM and they are OK. We tried everything; no ripple on power supply, RIFA capacitors changed on power supply, other electrolytic capacitors checked and tested, hot / fresh air on some part of the boards... but sometimes the system run smooth, and sometime it gave us weird errors and lockups.
We removed every unnecessary board; changed the VGA board, clean everything and look for contacts, bad joints, cables and whatsoever. We also made a complete dump of our 650 Mb SCSI hard disk to save data.
Our goal is to restore this UNIX System V. Release 3.2 Version 3.0 back running again!
The meaning of our Museum "Informatica Funzionante" is to restore pieces and to let people have fun(*) using them. So we're restoring it
(*) under our control, obviously!
We have no spare memory board to swap and make other tests, so here we are asking if somebody can have some boards around for this kind of machine.
Another clue can be to create a similar machine to boot this O.S. but it seem very weird - the SCSI HD image show that there's no boot record so we assume system boot via some hardcoded program into the BIOS. Board start as a Phoenix 386 bios but seem hardly different from any known pc from that era. Also, the Western Digital controller chip seem peculiar and I've find no SCSI controller with this same chip - and the kernel, I presume, is compiled for this controller...
Maybe can anyone help us? Any spare board, any old UNISYS similar server in the junkyard, or any kind of hint?
Thank you all
Gabriele
here at our computer museum in Palazzolo Acreide, Italy, we're trying to restore this ancient UNISYS server: (some picture here)
wiki DOT museo DOT freaknet DOT org/?title=UNISYS_U6000/50
(sorry I can't post any URL)
We have casual memory errors but we tested every single SIMM and they are OK. We tried everything; no ripple on power supply, RIFA capacitors changed on power supply, other electrolytic capacitors checked and tested, hot / fresh air on some part of the boards... but sometimes the system run smooth, and sometime it gave us weird errors and lockups.
We removed every unnecessary board; changed the VGA board, clean everything and look for contacts, bad joints, cables and whatsoever. We also made a complete dump of our 650 Mb SCSI hard disk to save data.
Our goal is to restore this UNIX System V. Release 3.2 Version 3.0 back running again!
The meaning of our Museum "Informatica Funzionante" is to restore pieces and to let people have fun(*) using them. So we're restoring it
(*) under our control, obviously!
We have no spare memory board to swap and make other tests, so here we are asking if somebody can have some boards around for this kind of machine.
Another clue can be to create a similar machine to boot this O.S. but it seem very weird - the SCSI HD image show that there's no boot record so we assume system boot via some hardcoded program into the BIOS. Board start as a Phoenix 386 bios but seem hardly different from any known pc from that era. Also, the Western Digital controller chip seem peculiar and I've find no SCSI controller with this same chip - and the kernel, I presume, is compiled for this controller...
Maybe can anyone help us? Any spare board, any old UNISYS similar server in the junkyard, or any kind of hint?
Thank you all
Gabriele
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LEARN ABOUT DEBIAN
gml2gv
GML2GV(1) General Commands Manual GML2GV(1) NAME
gml2gv - GML-DOT converter SYNOPSIS
gml2gv [ -? ] [ -ooutfile ] [ files ] DESCRIPTION
gml2gv converts a graph specified in the GML format to a graph in the GV (formerly DOT) format. OPTIONS
The following options are supported: -? Prints usage information and exits. -ooutfile Prints output to the file outfile. If not given, gml2gv uses stdout. OPERANDS The following operand is supported: files Names of files containing 1 or more graphs in GML. If no files operand is specified, the standard input will be used. RETURN CODES
Return 0 if there were no problems during conversion; and non-zero if any error occurred. LIMITATIONS
As both the graph and graphics models of GV and GML differ significantly, the conversion is at best approximate. In particular, it is not clear how multiedges are differentiated in GML, so multiedges are created in GV with no user-available key. Also, no attribute information is lost, in that any GML attributes that aren't converted to GV equivalents are retained as attributes in the output graph. AUTHORS
Emden R. Gansner <erg@research.att.com> SEE ALSO
dot(1), libcgraph(3) 9 July 2009 GML2GV(1)