|
Hi Keith, <snip> It's my understanding that the first system to implement single level storage was not the S/38 (AS/400, system i5, ...) but the MULTICS operating system from the 60's. </snip> Dr Frank did not invent the single-level store - which he freely states, but he named the S/38 virtual memory storage system after the work done on the Atlas computer in Manchester, England in 1961. The pioneering paper was published by T. D. Kilburn, B. G. Edwards, M. J. Lnighan and F. H. Summer. It was titled "One-level Storage System" IRE Transactions on Electronic Computers. The paper was published in April 1962. The design was used to make computer programs and data occupying many magnetic drums or disks appear to the programmer as a "single-level store". Thus, programmers did not need to code for paging-in and paging-out different parts of a program (overlays) as it processed. The virtual memory management system would allow the programmer to think that there is always enough memory, and would perform all the overlay management automatically. Of course, it was Dr Frank's implementation of the single-level store, together with the 128-bit pointer, page protection, persistent virtual memory, and pointer security tags which made the AS/400 soooooooo SLIC. ;-) Cheers Larry Ducie
As an Amazon Associate we earn from qualifying purchases.
This mailing list archive is Copyright 1997-2024 by midrange.com and David Gibbs as a compilation work. Use of the archive is restricted to research of a business or technical nature. Any other uses are prohibited. Full details are available on our policy page. If you have questions about this, please contact [javascript protected email address].
Operating expenses for this site are earned using the Amazon Associate program and Google Adsense.