Ancient 8086/80286 unixes?

[Tony Duell]

> > I also have an 8086 board for the XT. Of course the
> > benefit of that 
> > processor over the 8088 was the 16 bit databus,
> > which sould be lost if 
> > the thing had to do 8 bit accesses to memory. So
> > there's  full 640K of 
> > RAM on this board too. Of course it does use 8 bit
> > transfers to access 
> > ROMs and peripherals. This is a full-length card,
> > again with a cable and 
> > DIL plug to go in the 8088 socket.
> 
>  Is it's intended to supplant or supplement the 8088?
> Are you sure it just isn't a mpu board for some unit
> w/a passive backplane? I don't mean to insult your
> intelligence, just that it's a possibility.

I think the name etched into the copper implied it was an add-on for the 
PC/XT, and given the fact that it has this ribbon cable ending in the 40 
pin DIL header plug, I assume it replaces the 8088 (and therefore doesn't 
go in a passive backplane). 

-tony