Herb and David. Great sleuthing! Thanks for figuring that one out for me. I don't think I am in need of one yet, but if I am, thanks to Jonathan for the offer. Eugene -----Original Message----- From: vcf-midatlantic [mailto:vcf-midatlantic-bounces@lists.vintagecomputerfederation.org] On Behalf Of David Gesswein via vcf-midatlantic Sent: Sunday, February 26, 2017 5:32 PM To: Herb Johnson via vcf-midatlantic Cc: David Gesswein Subject: Re: [vcf-midatlantic] DEC 5380 chip On Sun, Feb 26, 2017 at 05:13:16PM -0500, Herb Johnson via vcf-midatlantic wrote:
Run my reply past David Gesswein. But the 5380 on the M8650 schematic, looks a lot like Signetics SP380, down to the pinouts. (don't be confused by OR vs AND, use Boolean logic). you can get SP380's on eBay for several dollars. Or ask some PDP-8 owners. There's also some notes on this page:
Yes the 5380 is the SP380A. I think the DS8640 will also work.