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Downtown Doug Brown Thoughts from a combined Apple/Linux/Windows geek. Home About Mac ROM SIMMs Software Microcontroller lessons Contact About Hi!
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Fixing an eMachines EL1200 BIOS bug with Claude
I'm no stranger to pushing hardware past its limits. For example, seven years ago, I tracked down an issue that prevented 16 GB of RAM being used in a motherboard that only supported 8. It ended up being a one-line GRUB hack to fix one of the ACPI tables
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Finding a broken trace on my old Mac with the help of its ROM diagnostics
Yesterday, for the first time in about a year, I tried powering on the Macintosh Performa 450 (LC III) from my past writeup about Apple's backwards capacitor. It didn't work. The screen was black, it played the startup sound, and then immediately followed
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Debugging BeagleBoard USB boot with a sniffer: fixing omap_loader on modern PCs
This post is about the original OMAP3530 BeagleBoard from 2008. Yes, the one so old that it doesn't even show up in the board list on BeagleBoard.org anymore. The BeagleBoard, not the BeagleBone. During my Chumby 8 kernel escapades, at one point I ran int
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An update about the hidden Performa 550 recovery partition
Earlier this year, I wrote about how I rescued a special recovery partition from an old Macintosh Performa 550's dead hard drive. This partition had been lost to time and it was a race to try to save it before the remaining Performa 550 machines out there
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