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About the systems:
Cray Y-MP EL (yel)
Cyber 960 (cy960)
Cyber 860 (cy860)
Cyber 830 (phoenix)
Desktop Cyber (dtcyber)
Control Data Net (cdcnet)
SGI Origin 2000 (o2000)
CData 4680 (majestix)
Sun Enterprise 10000 (e10k)
Cray T3E (t3e)
NEC SX-4B (sx4b)
NEC UP4800/675 (siox)
Cray J916 (uhu)
Cray J932 (huh)
Cray C90
Cray T3D
Fujitsu VPP300 (vpp)
Bull DPS 6000
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Deinstallation of CY830s
CDC Cyber Boards
Tours day on Nov 23rd 2002
Tours day on Nov 29th 2003
Tours day on Nov 27th 2004
Picking up a Cray J932
Acquisition of IPPs Cray J916
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Cyber 2000 from Zurich (external)
Moving to datArena (external, short overview)
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Hardware Projects
Cyber Disk Emulator
MUNIAC Vacuum Tube Computer

Team Members:
John G. Zabolitzky
Alexander Mann
Freddy Meerwaldt
Wolfgang Stief

In memory of:
Seymour Cray
Control Data Corp
Cray Research
Cray Computer Corp

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On German Computers

While we do not have any German computer in an operable state, we do collect some documents on German computers which are not universally available. Most of these documents are in German language, no translation provided.

Siemens S2002 (1959)
Befehlsliste (PDF, 945kB)
Simulator for the S2002 for MS-DOS including Triplex-ALGOL 60 compiler and example
This simulator was written by John G. Zabolitzky in the FORTRAN language and runs under MS-DOS. The source is included so adaptation to other operating systems is easily possible. Included with the hardware simulator is the machine code for the Triplex-ALGOL 60 compiler Alcor Mainz S2002. A triplex number is a machine representation for real numbers in the form
[min value, standard value, max value]
where all rounding errors are propagated through all computations, enlarging the [min, max] interval while going on. The language is described in

Apostolatos, N.; Kulisch, U.; Krawczyk, R.; Lortz, B.; Nickel, K.; Wippermann, H.-W.: The Algorithmic Language Triplex-ALGOL 60. Numerische Mathematik 11, pp. 175-180, 1968.

Applications are found here.
Interval arithmetic has not become popular since the strict [min, max] computation disregards the statistical nature of roundoff noise. The standard arithmetic in most cases known is very significantly more accurate than the interval arithmetic result might indicate.

Goettingen G2 (1960)
Befehlsliste (PDF, 14MB, bad contrast, therefore much noise)

Muenchen PERM (1952)

Telefunken TR440 (1971)
Große Befehlsliste TR440

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Document last modified on: Sun, 12.October.2014 16:07:00