An Eclipse microassembler

1 March 1977

journal article
Published by Association for Computing Machinery (ACM) in ACM SIGMICRO Newsletter

Vol. 8 (1) , 13-23
https://doi.org/10.1145/1217225.1217226

Abstract

The microprogrammed Data General Eclipse S/200 computer is available with a writable control store (WCS). The WCS feature of the Eclipse is an extension of the microprogrammed control logic of the computer's central processing unit. It allows a user to implement specialized instructions at a very low level. Its use is however, discouraged since Data General does not provide software support for the WCS feature. A microassembler was written to alleviate this problem on the Memphis State System.

Keywords

ECLIPSE MICROASSEMBLER
WRITABLE CONTROL STORE
LOW LEVEL
SOFTWARE SUPPORT
MICROPROGRAMMED CONTROL LOGIC
WCS FEATURE
MEMPHIS STATE SYSTEM
DATA GENERAL
SPECIALIZED INSTRUCTION
CENTRAL PROCESSING UNIT
MICROPROGRAMMED DATA GENERAL ECLIPSE

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