> Chippewa??? I don't remember that one. I remember SCOPE
> and, later, KRONOS.
SCOPE and Kronos were based on Chippewa. COS was largely
written by Seymour Cray; in particular, MTR is known by
programmers who worked on it later to have been written
completely by Cray. He and one or perhaps two others did
it between June and December 1964.
It was not meant to be a product. The *product* operating
system to be bundled with the machine was SIPROS. SIPROS
used an assembler named ASCENT that used different mnemonics
thsn COMPASS, which was the assembler under SCOPE and Kronos.
COS was written in octal. The source consists of two octal
numbers, a load address, two spaces, and the value at that
address. Further to the left in the traditional "comment
field" area is indeed a comment field, so the COS octal
source at least has some comments. There is a CP program
named APRAB that assembles these octal sources to binary.
COS also included Garner McCrossen's RUN compiler, which
handled both FORTRAN II and FORTRAN IV, as well as embedded
assembly language.
The first versions of the display console programs DSD and
DIS come from Chippewa, as well as the control cards
COPY
COPYCR
COPYCF
COPYBR
COPYBF
COPYSBF
REWIND
VERIFY
LBC
LOC
PBC
DMP
plus concepts like the dayfile, control points, combined
input & output (CIO), and the RUN compiler continued to
be available in the later SCOPE and Kronos.
You can read all about it at
http://www.spies.com/~aek/pdf/cdc/60124500_ChippewaOSref.pdf
-dq
Received on Sat Apr 27 2002 - 08:17:30 BST