Yes, SEL was referred to as systems, but like I said that PDF does not seem to be referring to an SEL product. Probably just a coincidence, but maybe not.
-Eric On Mon, Feb 15, 2021, 9:16 AM Bill Degnan <[email protected]> wrote: > A clue from Dan Roganti's web page or did "they" used to refer to SEL as > "Systems" back then and are you saying that the SC=4 is an SEL product? > (Systems [engineering labs] - Concept [4] ? > > Bill > > On Mon, Feb 15, 2021 at 10:08 AM Eric Moore via cctalk < > [email protected]> wrote: > >> http://mnembler.com/ragooman/computers_mini_products.html >> >> You can see some info on the systems (gould SEL) concept line here, but >> looking at that PDF, systems concepts was something different. >> >> -Eric >> >> >> On Mon, Feb 15, 2021, 4:47 AM Lars Brinkhoff via cctalk < >> [email protected]> wrote: >> >> > Anyone ever heard of the Systems Concepts SC-4 computer? >> > >> > "This is an two's-complement 18-bit machine, with 16 general registers >> > and a 16 level priority interrupt system. Its programming ascpects >> > are explained in great detail in the SC-4 Reference Manual, of which a >> > draft is enclosed. Below are times for some typical instructions. >> > >> > Add word on stack (not top word) to general register 1.5 us >> > Multiply general register by memory word 6.2 us >> > Jump 750 ns >> > Push and Jump 1.5 us >> > Compare Immediate 750 ns" >> > >> > From page 6 here: >> > >> > >> http://people.csail.mit.edu/saltzer/Multics/MHP-Saltzer-060508/filedrawers/141.graphics-system/Scan%203.PDF >> > >> >
