Recent content by mattsoft

MT brand. At least I know the video RAM and subsystem is good thanks to the Recon app which runs tests against it. Well, assuming the Recon app is testing it thoroughly. Anyway, I'll know within a couple weeks when the new SWIM arrives and I can tack it into place.

Ordered a new SWIM and in prep, removed the old one from the SE/30 board today. without the SWIM, the SE/30 does the same thing so either (a) the SWIM is a red herring (I hope not) or (b) the SWIM was not functioning correctly and removing it demonstrates consistent behavior. can't wait for the...

This software is AMAZING assuming your se/30 can get into debug mode. 2 cheap cables from Amazon and away you go!

Yep, that'll be the next step. I'm giving this one a rest for a bit and going to work on an Atari. :)

Wow, thanks! Ya, I'm pretty sure this is a bad SWIM. I'm getting simasimac and no chime (now that I know I have good RAM in there). Going to have to shelve this until I can find a battery bombed donor board with (maybe) a working SWIM or a free range SWIM that I can replace this with.

Troubleshooting is a lot of false positives. :) The grey screen was an artifact from the video tests persisting after short reboots, so it was a red herring. With good SIMMs installed, the Reconnaissance app (https://recon-68k.github.io/) says everything is good except for SWIM. So I started...

I did not have a mouse plugged in. :(

ya, maybe. the SIMM sockets look good. every pin in bank A looks OK. I'm reflowing everything on this board just in case. lol

Cables arrived and with the use of the excellent Reconnaissance app (https://recon-68k.github.io/) I connected the SE/30's serial port to a 2019 Intel Mac's USB port and ran the suite of tests. A bunch of memory errors and a bad SWIM. Everything else checked-out OK, including all things video...

Thanks! Cables ordered!

Ya, I'm going to check out the video ROM on the scope tomorrow. To connect the SE/30 to a modern PC/Mac via USB, I'll need to figure out all the cables and adapters to make it work. Does someone have handy-dandy links to those? :)

Started working on an SE/30 that won't start-up normally. Here are the symptoms: Simasimac-looking image on boot Death chimes immediately at power on Interrupt button does nothing Reset button will re-play the death chimes but not reset the image I've done the following: Voltages tested at...

This is amazing and one of the most interesting FPGA projects around! I would definitely buy one if available as well. Mind simply blown.

It's probably better/cheaper/easier just to find an FDHD SE logic board.

More anecdotal information... A while back, I picked up a Color Classic that was yellowing and the previous owner had started "restoring the color" using a non-acetone nail polish. He would wipe it on with a cloth towel, then quickly remove it with a plastic cleaner. It did indeed "restore the...