TY - JOUR
AU1 - Nanba, S.
AU2 - Ohno, N.
AU3 - Kubo, H.
AU4 - Morisue, H.
AU5 - Ohshima, T.
AU6 - Yamagishi, H.
AB -  VM/~: ACOS-# VIRTUAL MACHINE ARCHITECTURE S. NANBA* N. OHNO* H. KUBO* H. MORISUE** T. O H S H I M A * * * H. Y A M A G I S H I * * * * C&C SYSTEMS RESEARCH LABORATORIES, NEC CORPORATION, Kawasaki, 3apan ** COMPUTER ENGINEERING DIVISION, NEC CORPORATION, Fuchu, Tokyo, 3apan *** BASIC SOFTWARE DEVELOPMENT DIVISION, NEC CORPORATION, Fuchu,Tokyo,3apan ABSTRACT VM/4 is a virtual machine facility designed and implemented for NEC's ACOS-4 general purpose computer series. Using this facility, multiple ACOS-t~ series computer systems can be run on a single ACOS-4 computer system. For this facility, the VM/4 architecture has been newly designed, extending the ACOS-4 architecture ¢ Its major design emphasis is to attain high performance ¢ First, VM/~ has an integrated virtual machine system structure. In this system, general user's jobs can be executed directly under the native operating system, in parallel with virtual machines, without incurring virtual machine overhead. Furthermore, jobs on the virtual machine can be run with minimum overhead time. This high performance derives from highly effective and efficient hardware/firmware ¢ Overhead amounts ranging from 3 96 to 7 96, compared to elapsed time on native machine, are thereby 
TI - VM/4: ACOS-4 virtual machine architecture
JF - ACM SIGARCH Computer Architecture News
DO - 10.1145/327070.327156
DA - 1985-06-01
UR - https://www.deepdyve.com/lp/association-for-computing-machinery/vm-4-acos-4-virtual-machine-architecture-RtS4XrCFid
SP - 171
VL - 13
IS - 3
DP - DeepDyve
ER -