Ancient 8086/80286 unixes?

[Tony Duell]

> 
> Tony Duell wrote:
> > And I think there was an ARM-2 development system on an ISA card. Never 
> > seen it, though 
> 
> Looking at a photo of one of mine (the one with the additional I/O controller 
> and Acorn bus connector), it seems to be an ARM2 CPU - not an ARM1 as I'd 
> remembered. (At least Google gives the impression that the VL-2333 chip is a 
> second-generation).

What's the difference between an ARM1 and ARM2? I only have ARM 2 
datasheets. 

Certainly when I was looking at the ARM1 evaluation system I have for the 
Beebm the pinouts of the ARM1 processor seemed identical to those of the 
ARM2. Maybe the PC card could take either CPU.

-tony