On Wed, 30 Oct 1996 12:27:29 +0200 (EET) 
 Jari Kokko <jkokko@tnso13.tele.nokia.fi> wrote:

 > Does anyone know anything about the Apollo 3000 series of
 > workstations. I could buy one for practically nothing, but at the
 > moment it's running Domain OS 10.4 :-(
 > 
 > The machine is a curious mix of a 68020, weird memory config and ISA
 > slots (oh and a 5.25'' floppy drive!)

The 3000 had a 68020 and a proprietary Apollo MMU (called the Discrete
MMU, or DMMU).  The DMMU is documented in the Apollo architecture
manual, which I have a copy of (HI HERB!).  It doesn't look all that
different from the 68851, and I can only assume that it exists because
Motorola was late with the 68851.  (I've heard they're pin-compatible,
but I can't verify that.)

In any case, aside from the MMU, and the somewhat cool address folding
technique used to map the ISA i/o space, it's a pretty simple,
straightforward machine.

 > (Also, is an early HPUX an option? (off-topic question, I know, sorry.))

Nope, HP-UX wasn't an option for these beasts.

Jason R. Thorpe                                       thorpej@nas.nasa.gov
NASA Ames Research Center                               Home: 408.866.1912
NAS: M/S 258-6                                          Work: 415.604.0935
Moffett Field, CA 94035                                Pager: 415.428.6939