When you walked into the chip lab at CBM circa 1983 on a big piece of cardboard on the wall was a bunch of polaroid pictures representing the layout of the Signetics 82S100 PLA, we obviously didnít want to pay someone else for a chip we could eventually make ourselves. *From:* email@example.com [mailto: firstname.lastname@example.org] *On Behalf Of *Steve Gray *Sent:* Tuesday, February 07, 2012 11:53 AM *To:* email@example.com *Subject:* Re: Random Characters Rob, you beat me to it. But I'll add that the 6502 has been done as well by photographing the actual chip by the Visual6502 people ( http://visual6502.org/). What I would like to see is some recreations of some of the the more obscure/hard-to-find chips like: 6509, 6525, TED, VIC-III (and the other C65 chips). Steve *From:* Clarke Rob (KVYD) <firstname.lastname@example.org> *To:* email@example.com *Sent:* Tuesday, February 7, 2012 11:47:46 AM *Subject:* RE: Random Characters Hey Bil - PLA and SID have already been done! http://retro-donald.de/sinchai-shop/index.php?main_page=page&id=3 http://www.swinkels.tvtom.pl/swinsid/ Rob -----Original Message----- From: firstname.lastname@example.org [mailto:email@example.com] On Behalf Of Bil Herd Sent: 07 February 2012 17:44 To: firstname.lastname@example.org Subject: RE: Random Characters I cant help but feel that using today's FPGA technology and PCB on socket that it would be possible to make drop in replacements for all of these old chips, maybe even SID. Find the right conditions for I/O to emulate the drive and speed of NMOS lines including going into and out of Hi-Z . Someone would have to need one heck of a hobby though. Message was sent through the cbm-hackers mailing list Message was sent through the cbm-hackers mailing listReceived on 2012-02-07 17:00:48
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