Re: The "Good" Old Days - Complete Specs for DX-10 Operating System

On Wed, 2 Oct 2024 09:15:02 -0700, John Ames wrote:
 

I've always found the 9900 concept interesting, although its core
assumption about memory speed doesn't really hold up today; much of the
architecture was eventually reincarnated in TI's MSP430 series micro-
controllers, but they ditched the memory-resident register file. But for
the time, context-switching certainly didn't get any faster than that;
only three actual registers to save, but you still got a comfortably
PDP-11ish environment from the programmer's perspective.

 
I worked on one project that used the 9900. Its claim to fame is TI had a
rad hard version.