FPGA VAX update

[Tony Duell]

[11/730]

> Maybe. I think that there is probably a lot more logic outside the 2901
> than inside... We're still talking several boards of logic here... I doubt
> all of that is microcode memory, 2901s and 74xx series stuff. :-)

The 11/730 CPU (not including the integrated disk controller or the FPU) 
is 3 hex cards. It's been a long time since I've been inside one, but 
from what I remmeber, the chips include

8 off 2901s

An 8085 (or something similar) as the console procesosr, along with local 
ROM and RAM

A couple of serial chips + buffers (console and TU58 ports)

The microdoe RAM

2 DEC gate arrays which seem to be the memory ECC chips. I suspect 
they're similar, if not the same, as ones in the 11/750

Loads and Loads of 20 pin PALs. Fortunately not copy-protected.

Some, but not a lot, of TTL

-tony