I got the 2.8 VM running on my old PowerBook.  Thanks for your help. 
(The 2.7VM that comes from the distribution .sea is PPC only, not a 
Fat binary).

It may have been a memory problem, as I guessed.  I turned off 
ramdoubler, made a smaller image, and presto, it works usably.

(At least, I tried to make a smaller image.  The various Smalltalk 
discard* methods didn't seem to do anything, at least, the classes 
still showed up in the browser.)

I get 848176 bytecodes/second and 37576 sends/second.

This is on an LC68040 with a 33/66 clock (I'm never sure which number 
is which!) running Dan's 2.8 beta VM.

At 12:39 -0400 2000.6.8, Mark Guzdial wrote:
>- Older Powerbooks are cheap (less than $200 for a 190, less than 
>$700 for a 5300ce) which has an interesting side effect.  They feel 
>more *playful* to me -- I take it to the kids' playground with less 
>concern. My older Powerbooks actually feel more like "personal" 
>computers.

Kinda like a DynaBook?

	Andrew