FPGA tricks - Re: using new technology on old machines. Was: PDP-12 Restoration at the RICM
dave.g4ugm at gmail.com
Mon Jun 15 11:57:11 CDT 2015
> -----Original Message-----
> From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of ben
> Sent: 15 June 2015 17:18
> To: cctalk at 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
> 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.
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