Recent content by mattsoft

Last post on this thread: the SE/30 is all fixed! Bad fuse on F1 was keeping the ADB from working. I jumped it and everything now works. New poly fuses ordered to replace jumpers. Another SE/30 saved! :)

F1 has no continuity, so the ADB is not getting any juice! I presume it's ok to jump F1 for testing purposes until I can get a replacement component?

and we have boot! floppy drive works (int and ext) and SCSI works (int and ext). now I've got an ADB issue. mouse only goes up and down and click registers. no horizontal. when the keyboard is unplugged. with keyboard plugged in, I get nothing. both ADB devices do work. starting to...

Update! New SWIM chip in...and...she posts! Need to test floppy and SCSI next and clean up all the damn flux I used on the board. But there you have it, if you see the error in the original post, it could be a bad SWIM chip.

If you haven't already, get that SE/30 connected to your modern Mac/PC so you can troubleshoot through debug mode: https://recon-68k.github.io/

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!