Hey Rob (and anyone else sniffing signals), I've been using a USB logic analyzer from Saleae (https://www.saleae.com/) for years now and the software is really good. Way cheaper than a standalone unit. I'm unsure if the inputs can handle more than 5v but you could throw a divider network in front and try it.
Also there's the Digilent Analog Discovery ( https://www.sparkfun.com/products/13929) which does the same stuff but I can't vouch for the software as I've never used it. Inputs can handle +/-20v apparently. =] -- Anders Nelson +1 (517) 775-6129 www.erogear.com > ---------- Forwarded message ---------- > From: Rob Jarratt <robert.jarr...@ntlworld.com> > To: "'Paul Koning'" <paulkon...@comcast.net>, <r...@jarratt.me.uk>, > "'General Discussion: On-Topic and Off-Topic Posts'" < > cctalk@classiccmp.org> > Cc: > Date: Mon, 29 Aug 2016 17:33:56 +0100 > Subject: RE: DEC Pro 350/380 Memory Cards - Interchangeability? > > > > -----Original Message----- > > From: Paul Koning [mailto:paulkon...@comcast.net] > > Sent: 29 August 2016 15:08 > > To: r...@jarratt.me.uk; General Discussion: On-Topic and Off-Topic Posts > > <cctalk@classiccmp.org> > > Subject: Re: DEC Pro 350/380 Memory Cards - Interchangeability? > > > > > > > On Aug 28, 2016, at 5:11 PM, Rob Jarratt <robert.jarr...@ntlworld.com> > > wrote: > > > > > > I have a 350 and 380. Neither work. The 380 is reporting a possible > > > memory error on the LEDs. Will the 350's memory work in a 380 (or vice > > versa)? > > > > The 380 has memory on the motherboard, and a model-specific > > daughtercard for expansion memory. > > > > It seems reasonable that the Pro bus (I/O card) expansion memory should > > work in both models, but I don't have any to try that. > > > > If you have a 380 complaining about memory and it has a Pro bus memory > > card installed, I'd suggest removing that card to see if it's happy with > just the > > stock motherboard memory. > > > > paul > > Just reading your reply again. Are you saying it has enough memory on the > board, without using a daughter board? I did see lots of memory on the main > board, but assumed it was video memory. I did try removing the daughter > board altogether at one point, but it still didn't work. :-( > > I wish I had a logic analyser. > > Regards > > Rob >