KUBOTA Computer (Stardent) AVSstation Titan Vistra 800 is a UNIX workstation that use Intel 80860XR (i860) as main processor. This system is largely based on Oki Electric OKI Station 7300. Computers with i860 are rarely found: examples of these computers include Intel iPSC/860 and Paragon XP/S, and Geometry Engine in Silicon Graphics Reality Engine graphics system. After a KUBOTA system is donated to us, we have disassembled it and examined internal components for possible damages. Luckily no damages are found (even the harddrive is alive), and we took pictures of guts in the system.
The front panel of the system. Nothing much to see here.
The hard-to-read logo of the system. A computer name should be much shorter.
The I/O ports on the back of the chassis are: DEC-style coax-in-D-shell RGB connector, 50-pin narrow scsi, AUI, 2× DE9 RS-232C ports and DIN8 keyboard connector.
The systemboard. The memory modules are 30-pin SIMM. The SCSI bus is controlled by a WD33C93A-PL controller, and the Ethernet controller is Intel 82596DX. UART is Zilog Z85C3008PSC.
Closeup on the CPU. The i860XR is rated at 40 MHz.
The video board. Three RAMDACs are used, one for each of red, green and blue channels. Under this RAMDAC board, there is another board full of VRAMs.
After repairing the power supply, the system successfully booted.
I used a DEC video cable to connect the system to an SGI CRT that accepts Sync-on-Green.
The ROM says it is copyrighted by Kubota Computer Inc., Stardent Computer Inc., Oki Electric Industry Co., Ltd. and Intel Corporation.
The operating system on the harddrive was
UNIX System V/i860 Release 4.0 Version 3.0.1.
We even have X11 running, but there isn't a connector for a mouse on the computer. Maybe standard serial mouse would be fine?
18-Feb-2013 H.Tomari.tomari at is dot s dot u-tokyo dot ac dot jp / htomari at mail dot ru PGP public key (81466E97)
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