FPGA VAX update, now DIY TTL computers

[Tony Duell]

> 
> On 11/11/2005 at 11:12 PM woodelf wrote:
> 
> >PS.  As for getting  7400 off  scrap boards, if I had the scrap boards I 
> >would most likely try to get the scrap item working again. :D

Me too. I've got piles of obscure boards that I'd like to get going again 
sometime. Most have no real practical function, but are part of the 
history of computing/electronics.

About the only thing I'll raid for parts are no-name clone PC 
motherboards and cards.. And those are not a good source of standard TTL, 
alas.

> 
> There are plenty of junk boards that have no particular useful function.
> I've got a bunch of ISA cards that I salvaged.  All were old models of a
> gizmo that appeared to a PC as a monochrome adapter, but which translated
> the CPU writes to video memory to serial codes to a VT-220 type terminal.

Now that sounds unusual enough to be very interesting. Put it this way, 
if I had something like that I'd be trying to track down a dump of that 
missing ROM. I would not be raiding it for parts. 

-tony