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

From: Douglas Quebbeman <dhquebbeman_at_theestopinalgroup.com>
Date: Mon Sep 17 16:48:07 2001

> >Cool idea -- flash on a DIMM. Has anyone ever heard of such a beast?
>
> The Apple Set Top box uses flash SIMM/DIMMs for it's boot
> code. At least the one I have does. It's a 68pin SIMM with 8 Intel
> E28F020 flash memory chips (256k x 8).

Additionlly, several models of Macs have had either SIMM or DIMM
sockets for ROMs; in the case of the Mac IIci, it's unpopulated,
and my guess was there either for upgrades or for some special-
order boxes used by an unnamed customer... ditto the Quadra 605
(LCII format).

Regards,
-dq
Received on Mon Sep 17 2001 - 16:48:07 BST