Sorry Richard, I have to jump in here ;-)
Richard Erlacher wrote:
I'd not be afraid to give the SPARTAN series a try for building an experimental
version of a '70's-'80's generation CPU. They are relatively (choke)
inexpensive
$20 for the xcs10, plcc84 package.
What did you pay for your 3k gates 3030 before ?
and available in versions with sufficient on-board RAM
that you
might not need the higher pin counts required to interface external memory.
Unfortunately, the high-pin-count parts are hard to prototype.
There really many prototype boards out there. And cheap ones ...
The solution is to go to a gun show and buy a pistol,
then stop at the local
liquor store to make a withdrawal.
Student license is $100 & the small prototype board around $150.
Still much cheaper than a good gun ;-)
Then you'll be able to afford the
prototyping sockets, normally costing $400-500 or so when built onto a
wire-wrap-compatible adapter. Life is easier when one simply uses the 84-pin
PLCC versions.
Cheers