4 ms·
The Singer System 10 was a somewhat-successful early 1970s computer without an operating system - it ran from firmware. Yet it seems that it was a general purpo
by patrickg_zill 8y ago
The Singer System 10 was a somewhat-successful early 1970s computer without an operating system - it ran from firmware. Yet it seems that it was a general purpose processor (as limited as it was). Had either 13 or 16 instructions in its CPU set. see http://www.fano.co.uk/history/sys10b.html http://www.fano.co.uk/history/sys10b.html
There is ProjectOberon http://www.projectoberon.com/ http://www.projectoberon.com/ which has an FPGA based CPU (which requires only money to turn it into a real CPU), using 20 instructions.
The PIC32MZ micro-controller runs a MIPS32 core at 200Mhz, with MMU and FPU. This core or an earlier one like it, was used on the SGI Iris Indigo workstations back in the day ...