I recently found myself needing to change the monitor that a cheap HDMI “dummy plug” pretended to be. It was a random one I had bought on Amazon several years ago that acted as a 4K monitor, and I needed it to be something simpler that didn’t support a 4K resolution. The story behind why is a long one that I’m still figuring out and might eventually become a separate blog post in the future.| Downtown Doug Brown
As part of my research into the Macintosh Performa 550’s factory recovery partition, I paid a lot of attention to eBay listings for these computers. I came to an interesting discovery that I had already suspected: big CRT-based Macs in this form factor are regularly damaged in shipping after being sold on eBay.| Downtown Doug Brown
I’ve been noticing a lot of fun stories lately about bugs in old software that suddenly showed up in newer Windows versions. For example, here’s an excellent writeup by Silent about a bug in Grand Theft Auto: San Andreas that laid dormant until Windows 11 24H2 came out. MattKC also recently posted a cool video about the massive project of decompiling LEGO Island, which also solved the mystery of the “exit glitch” that happened in newer versions of Windows. Nathan Baggs has also been a...| Downtown Doug Brown
After over two decades, players are now forbidden from flying a seaplane, all thanks to undefined code behavior.| Silent’s Blog
In my last post about hard drives that go bad over time, I hinted at having rescued a lost piece of obscure Apple software history from an old 160 MB Conner hard drive that had its head stuck in the parked position. This post is going to be all about it. It’s the tale of a tad bit of an obsession, what felt like a hopeless search, and how persistence eventually paid off. There’s still an unsolved mystery too, so I’m hoping others will see this and help to fill in the blanks!| Downtown Doug Brown
As part of my work toward an upcoming post about a lost piece of very obscure Mac history that has finally been found, I’ve been playing around with old Apple-branded SCSI hard drives made by Quantum and Conner in the 1990s. What I’m about to describe is already common knowledge in the vintage computing world, but I thought it would be fun to share my take on it anyway.| Downtown Doug Brown
This is the story of how Apple made a mistake in the ROM of the Macintosh Classic II that probably should have prevented it from booting, but instead, miraculously, its Motorola MC68030 CPU accidentally prevented a crash and saved the day by executing an undefined instruction.| Downtown Doug Brown
I’ve recently been on a bit of a repair kick and wanted to tell another fun repair story. I promise my blog isn’t becoming dedicated just to fixing electronics. This was an interesting story as far as parts sourcing goes though, so I thought it would be a cool one to share. Plus, you’ll get to learn how focus control works on webcams with autofocus.| Downtown Doug Brown
The last couple of electronics repairs I’ve written about on this blog were both quite involved. Fixing stuff doesn’t always involve crazy rabbit holes though! Here’s a quicker fix that I recently performed.| Downtown Doug Brown
This post has a little bit of everything. Hardware diagnostics, some suspiciously similar datasheets from two separate Taiwan chip manufacturers, and firmware reverse engineering. Read on if that sounds like fun!| Downtown Doug Brown