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 >
