[cctalk] Re: Logic Analyzers - HP/Agilent 16700B or 1670G?

You could try an AMD (ex Xilinx) logic analyser ... Basically, use the logic analysis capabilities provided (free) by FPGA OEMs to construct a DIY LA. In brief, the LA is in the FPGA libraries / GUI, you do of course have to wire them up both inside (Vivado) and outside (level shifters and copper wire) the FPGA. Boards which are not too expensive, and have 0.1" (ish) LVTTL interfacing are: - https://digilent.com/shop/arty-z7-zynq-7000-soc-development-board/ which should yield ~79 digital IOs - https://digilent.com/shop/cora-z7-zynq-7000-single-core-for-arm-fpga-soc-de… again ~79 - https://digilent.com/shop/cmod-a7-35t-breadboardable-artix-7-fpga-module/ 52 digital IO (mux A and D outboard ?) See "Re: Low cost logic analyzer" by self on 15 Mar 23 for a previous, more detailed post. You may also care to consider retrocmp's offerings: - see e.g. http://www.retrocmp.com/projects/unibone Martin -----Original Message----- From: John H. Reinhardt via cctalk [mailto:cctalk@classiccmp.org] Sent: 20 August 2023 19:58 To: General Discussion: On-Topic and Off-Topic Posts <cctalk(a)classiccmp.org> Cc: John H. Reinhardt <johnhreinhardt(a)thereinhardts.org> Subject: [cctalk] Logic Analyzers - HP/Agilent 16700B or 1670G? Hello all.  I looking around for a Logic Analyzer for doing (mostly) DEC QBus/UniBus stuff.  Being the way I am I want something with enough lines to handle the most of the signals so I'm guessing something with roughly 80-ish channels.  I think that lets out all/most of the USB based LA.  I've looked around and it seems the the HP/Agilent 16700 series (16700B/16702B) are probably what I want.  I've also seen the 1670G which also seems quite doable.  I've seen a lot of posts at the EEVblog and it seems I missed possibly the golden age of 16700 LA by a few years price-wise. What I'm wondering is if there is something specific I should be looking for, or opinions on which LA is more suitable.  Or even if there is a different make of LA to look for. Thanks in advance for your help John H. Reinhardt