CADR (was [rescue] Crays, etc._

[William Barnett-Lewis]

> On Apr 26, 2004, at 10:43 PM, William Barnett-Lewis wrote:
>> (All of this is made even more intense right now because I'm reading 
>> the schematics for the CADR/LM-2 that I found at 
>> http://bitsavers.org/pdf/mit/cadr/LM-2/symbolics_cadr_docs.pdf Lots of 
>> tasty old time 74S TTL IC's that even my low level of knowledge can 
>> make sense out of...)
> 
>    I wonder if it'd be practical to reimplement that logic in FPGAs.
> 
>          -Dave


I wonder that too, but I don't have any experience using them. Is there 
a good (and cheap/free) tutorial/beginner's kit out there somewhere? And 
while I have a copy of the LMI lisp sources, I'm not sure about the 
microcode and that would be the killer... But that core logic in FPGA 
with a modern disk controller, vga compatible video, ethernet and 
perhaps USB for the keyboard/mouse? Yeah, that could be a whole heck of 
allot of fun...

Oh, for anyone interested, the file referenced above only has the 
support (io, disk, video) schematics along with the ai lab paper 
describing the machine. The actual cpu and bus schematics are in 
http://bitsavers.org/pdf/mit/cadr/CADR4_schematic.pdf


William
-- 
Live like you will never die, love like you've never been hurt, dance
like no-one is watching.
				Alex White