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I've got a Newer Tech MAXpowr G3 upgrade card (400/200 DT351) on a PowerTower Pro logic board. When verifying checksums on larger DiskCopy self-mounting images, each time the calculation ends with different (and wrong) checksum values. Swapping RAM or loading the .smi files off the network...

I'm reverse-engineering the vendor protocol for Kensington pointer devices and had a question for anyone who might have an ADB Turbo Mouse 4.0 or earlier (the 2-button model) on their desk. If anyone is inclined, could you run ADBParser and do a Talk on register 1 and register 2 of the device...

I've got a project Mac II without the "Macintosh II" label on the front. It looks like some bozo (not me this time) decided it would look better without it and scrubbed the area clean. Anyone been able to restore this type of thing? Is this a job for decals, or is there another option available?

I figured out a method to net-boot early New World ROM systems into OS 9 using modern server software. Instructions for how to do it are here: https://github.com/saybur/kea-mboot This is quite useful if you need to bootstrap an old Mac without a functional optical drive, or if you want to run...

I've got a graphite Apple Studio Display 17" (M6496) that flickers out at random, the image snapping to the center then slowly re-expanding over the next few seconds. This unit is on its original caps, but based on the symptom and other people's reports of problems with this model I'm assuming...

Over the past few weeks I've been working on something to share peripherals between multiple old Macs (keyboards/mice/whatever). Here's what I've come up with: This supports five ADB buses (4 computers and 1 set of peripherals) via a Pico W. I've got (very) basic ADB keyboard and mouse...

Here is the first release of scuzEMU, a SCSI emulator control utility. This System 6+ app can choose mountable removable disk images and download files directly from a compatible SCSI emulator's SD card. I've developed this with a ZuluSCSI running firmware 2024.05.17 (with Toolbox=1 in the INI...

Over the past few weeks I've been doing some tinkering with ZuluSCSI boards and figured out a way to get a ZuluSCSI RP2040 to output 44.1KHz S/PDIF audio over one of the expansion pins. Combined with some awesome development work from @rabbitholecomputing to add full BIN/CUE support for CD-ROMs...

I've got a troubled IIci and was hoping some wise soul here might have a good idea about what to try next.   This system boots up but does not register anything over ADB. Shaking the mouse during or after startup does nothing, nor does typing anything on a keyboard. After the machine boots...

I've been spending some time recently making a SCSI to Ethernet adapter using all-new hardware.  I managed to snag a Nuvotech NuvoLink SC off eBay, and after doing some analysis of how it talks with the driver over SCSI, I've decoded the vendor-specific parts of the communications protocol and...

I've got a problem child Power Mac 7100/66AV that I've been trying to fix for a while, and was hoping for some thoughts from knowledgeable people here about the next steps to take. The issue: from either an ADB keyboard or the rear button, the system powers on (front LED lights, there's a...

Inspired by bmow's work, I've created a generic Apple Desktop Bus device transceiver using Atmel AVR microcontrollers.  The goal is to make it (relatively) easy for the hardware hackers here to integrate ADB support.  Take a look at the GitHub repo if you're interested in playing around with the...