EVLIS Machine of Osaka University

EVLIS Machine of Osaka University

EVLIS Machine of Osaka University


Manufactured in 1979〜1982
Manufactured by Department of Applied Physics, Faculty of Engineering, Osaka University
Owner Graduate School of Engineering, Osaka University
Location of historical materials Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871 Japan
Visitor information Open to the public
Contact Graduate School of Engineering, Osaka University,
Tel.+81-6-6877-5111

The EVLIS Machine was a parallel processing Lisp Machine with multiple processors, implemented in 1979 - 1982 at the Department of Applied Physics, Faculty of Engineering of Osaka University, lead by Hiroshi
Yasui and Toshifumi Saito.

EVLIS was named after the function evlis, which evaluated parameters in parallel in evaluation function eval.

EVLIS had multiple homemade EVAL II processors (7 in the design stage, 3 in the final machine), data buffers, and additional hardware for diagnosis. It also had a Z80 I/O processor. EVLIS, with single EVAL II, was faster than the contemporary Lisp Machine. It achieved comparative execution speed with Lisp processors on the M200-H, which was the fastest computer at the University Computer Centers.

In 1984, a microprogrammed Prolog machine was built. Then in 1989, the neuro engine was installed, thus neural logic was computed in the Lisp environment. The EVLIS machine is currently maintained in the reference room of the Graduate School of Engineering.