On Fri, Jul 24, 2020 at 12:59:51AM +0000, dwight via cctalk wrote: > I would think to be a mainframe, it has to have a I/O processor. That is > about all I can think of.
Contemporary PCs satisfy that description: GPUs are the most visible I/O processor, and all of the other bus interfaces such as SATA and USB need at least a microcontroller to speak the relevant protocol. What is old is new again...
