Subject: Re: Sun2 running NetBSD?
To: Patricio Javier Montes C. <>
From: Ken Nakata <>
List: port-sun3
Date: 12/14/1995 21:45:05
> Does any body know if an accelerator for the 68000 macs works on a SUN 2?
> it has a 68010 that seems to be pin compatible with the 68000, and the 
> accelerators seem to have the PMMU and Math coprocessor that are needed
> to run NetBSD.

I don't know much about Sun 2's hardware at the logic level, but any
of the 68000 Macs doesn't have DMA of any kind and it makes it much
easier to stop the on-board CPU by just pulling down BR* (bus request)
signal.  I *think*, OTOH, Sun 2 has some sort of DMA support, and it's
most likely that DMA device wants to assert BR* signal as well.

In one sentence, I'm not very optimistic about it.