On 04/18/2012 04:29 AM, Dave McGuire wrote:
On 04/17/2012 09:56 PM, David Griffith wrote:
Who was the one with the wacky idea of building a
Straight-Eight PDP8
using flipchip cards populated with surface-mount parts? I have a
hankering to run some numbers about it.
I had been considering it, but I
don't think I ever told anybody about
it. Either I did and forgot, you're a mind-reader, or somebody else had
the same idea.
-Dave
I too have been considering it and not tell anyone because its a little
crazy (and crazy cool). I started thinking about it when I saw the MT15
which is a cpu all in surface mount components.
http://www.6502.org/users/dieter/mt15/mt15.htm
Building flipchips in a package like this seems doable:
http://www.6502.org/users/dieter/mt15/mt15_nand.jpg
Complexity among the flip chips vary though. A couple R111 could
probably share the same circuit board, while an R151 probably needs more
space:
http://www.pdp8.net/r-boards/pics/r111.shtml?small
http://www.pdp8.net/r-boards/pics/r151.shtml?small
For me, time and skill is a limitation. But I'd follow such a project
very closely.
Regards,
Pontus.