microcoding a PC into a PDP-11 (was: RE: Classic Computers vs. Classic Computing)

From: Jonathan Engdahl <engdahl_at_cle.ab.com>
Date: Tue Sep 18 10:59:37 2001

> -----Original Message-----
> [mailto:owner-classiccmp_at_classiccmp.org]On Behalf Of emanuel stiebler
> Jonathan Engdahl wrote:
>
> sizes. Prices are
> > about $100 per meg. Something called "flash DIMM" shows up on
> >
> Looking at this prices, what happened to the old 3.5" floppy drive ?
> If you can start a complete/compressed linux/firewall from there, should
> be enough to start an emulator.
> And, BTW, not all of the pc motherboard chip sets supports FLASH DIMM
> (any ?),
> so you're stuck then with some motherboards.

Very good point. I was thinking that it would be nice to have a machine that
was a PDP-11 as soon as you flipped on the power, but probably not worth the
cost and hassle of the flash. Didn't some of the VAXen boot their microcode
from a floppy?

Also, that way you could have one microcode floppy for each classic
architecture.


I think that my emulator idea can be made to work under Win32. It appears
there are facilities allowing an application program to catch access
violations.

--
Jonathan Engdahl???????????????? Rockwell Automation
Principal Research Engineer????? 24800 Tungsten Road
Advanced Technology????????????? Euclid, OH 44117, USA
Euclid Labs????????????????????? engdahl_at_cle.ab.com  216-266-6409
Received on Tue Sep 18 2001 - 10:59:37 BST

This archive was generated by hypermail 2.3.0 : Fri Oct 10 2014 - 23:34:25 BST