> -----Original Message----- > From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of ben > Sent: 15 June 2015 17:18 > To: cctalk@classiccmp.org > Subject: Re: FPGA tricks - Re: using new technology on old machines. Was: > PDP-12 Restoration at the RICM > > On 6/15/2015 9:08 AM, Toby Thain wrote: > > On 2015-06-15 9:35 AM, Dave G4UGM wrote: > >> I don't think it is over kill. If you want over kill try this:- > >> > >> https://www.youtube.com/watch?v=ALXax3Gydl8 > >> > >> and FPGA implementation of the Baby or SSEM which had 32x32 bits of > > RAM. The implementation uses around 1% of the Spartan 3E 1200K gates, > > and that includes the logic to generate the VGA which is around 50% of > > the circuit. I expect to get it on a 100K gate chip but that’s still > > over-kill. > >> > > > > Speaking of VGA, you might like this: > > > > http://www.fpgarelated.com/showarticle/42.php > > > > --Toby > > > > But alas the software does *not* support the older chips.
How old is old? I managed to get a copy of ISE10.1 downloaded, installed and running without phoning, ringing or otherwise jumping through hoops. That supports the Spartan 2 which has been obsolete for some time.. If you want to play with some Spartan 2 chips contact me off-line. > You want to make a mod 5 years down the road, sorry we do not support > that model any more. TTL needs to be stock piled now for the next +50 > years. > I finally got 18 bit FPGA computer (DE1) design I like, that is early 70's > speed. > 1.5 us core. What I am having problems is finding a good book on Operating > Systems from that Era that is online, any one know a good book? I have > software that I need to write. > Ben. > > > >
