"Clint Wolff (VAX collector)" wrote:
> I have been wondering how difficult it would be to pop the top off
> an ASIC (perhaps one of the DEC gate arrays in my 11/750), photograph
> it using the probe station at work, and reverse engineer the circuitry
> based on the photographs. A program to recognize individual transistors
> wouldn't be too difficult, then generating simple gates (nand,nor,invert),
> from them, the high level stuff like registers and busses...
> Anybody know of a tool to do something like that?
Well, if you want Verilog or VHDL as output you could use LayBool,
but it's fragile and, as with most EDA tools, expensive
(~USD100K). At one time it was peddled by SGS-Thomson, then Compass,
now god-knows-who. It gets badly confused by precharge logic, but
you're not likely to see that in something from an 11/750 ;-)
--
Chris Kennedy
chris_at_mainecoon.com
http://www.mainecoon.com
PGP fingerprint: 4E99 10B6 7253 B048 6685 6CBC 55E1 20A3 108D AB97
Received on Mon Jul 31 2000 - 19:28:39 BST