Issue No. 04 - July/August (1985 vol. 2)
R. Olson , ELXSI
As originally designed, the ELXSI System 6400 used messages to achieve parallelism. Shared-memory capabilities were added later-with added later?with surprising ease and success.
R. Olson, "Parallel Processing in a Message-Based operating System", IEEE Software, vol. 2, no. , pp. 39-49, July/August 1985, doi:10.1109/MS.1985.231374