Interesting the Micronota logic probes are 'collectible' now. I still have the one I bought in high school and it still works just fine, never thought of it as collectible though.
Your symptoms sound similar to what I was experiencing recently which, with the help of the list, was traced back to a faulty RAM module (the standard RAM). It was hard to sus out what was happening until I got a logic analyzer on the data bus and traced through what was being read from the ROM and compared that to a ROM disassembly. I have an older Saleae Logic 8 (not made any longer) but I saw clones on eBay recently for $10 and the 16 channel clones were $50. It seems semi-shady to me to use a clone with the Saleae software but there is also an open source software you can use (which still uses and Saleae driver I think). Jeff -----Original Message----- From: M100 <[email protected]> On Behalf Of Greg Swallow Sent: Monday, June 4, 2018 11:36 PM To: [email protected] Subject: Re: [M100] Model 102 Black Nothing After Y2K ROM install Will take some time to get a probe. Micronta probes on eBay (collectible) are out of my reach just now. I have gift cards for Lowes, Home Depot, and Harbor Freight, but the probes they have are not so "logical." I can get a Elenco Electronics LP-560 off Amazon for less than @20 shipped. It isn't fancy, but should do the job. Of course if you happen to be anywhere in the Phoenix, AZ area, I could bring a lot of coffee and BoSa Donuts. Thanks, GregS <>< ----- Original Message ----- From: "Fugu ME100" <[email protected]> To: [email protected] Sent: Monday, June 4, 2018 9:04:07 PM Subject: Re: [M100] Model 102 Black Nothing After Y2K ROM install You might want to invest in a Logic Probe, old school debugging :) That would give a good indication as to whether or not the lines are working correctly also much easier to use than a MM. They are quite cheap these days, I use a Micronta Logic probe from log ago.
