On Jun 28, 13:29, Doug Yowza wrote: Yes, lots of companies like MIPS, Digital, ARM, Motorola, etc etc make the core designs available for others to incorporate in their customised processors, and I had no doubt that that's just what NEC did. Sometimes the design owner does the customisation, sometimes the company who want the custom version. NEC would have the experise to do it themselves, I'm sure. All I meant was that it would still basically be a MIPS core, with a standard architecture and instruction set. I hadn't heard about MIPS being separated again. Given what SGI are doing at the moment, I wouldn't be surprised. was I confess that I pay little attention to WinCE and even less to version numbers :-) Yes, the 11/23 used the F-11 chip, which is a single 40-pin package. There are optional add-ons, but the basic processer is just one ceramic object -- though anyone who looks at it will immediately see that it's actually two smaller packages (essentially, one for ALU and one for microcode) mounted on a common carrier with a few chip capacitors for good measure. I didn't mention the 11/03 because although it's often described as a microprocessor, it's actually a set of 4 40-pin chips (5 with optional EIS/FIS instructions) called a D-11. That's the one often called an LSI-11, although strictly speaking LSI-11 refers to a particular processor board. And I deliberately didn't give more detail about the unix systems, because I can't remember what Bell called those little systems, and I don't have the reprints of the AT&T Technical Journal to hand :-) I'm fairly sure there was a stand-alone system using RX02s. Of course, you could also count 11/23 systems running standard 7th Edition Unix (1979) on RL02s, like the one I have here. -- Pete Peter Turnbull Dept. of Computer Science University of York