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I'd be willing to test if it could help. System wise I have a fairly wide variety of Macs, pre-1995 these could be interesting: Desktops: IIci, IIsi, LC, Q700, IIvx, LCIII, C650, Q605, Q630. Laptops: PB165, PB180, PB540c, Duo Minidock, Duo Dock, Duo Dock II, Newer Tech UltraDock 16sce. NuBus...

I most definitely want one of these! My one small LCD that supports sync-on-green (ViewSonic VG150) is flaking out on me and it would be so nice be able to just keep just my NEC LCD1550V on my workbench to use with all my vintage Macs!

It looks like CPU pin 83 is bent and might be touching pin 82? Another one to check would be U5 near the sound ports, my understanding is it is involved in startup somehow and might need the same treatment as the egret.

I wonder if Apple did have a plan to offer a direct PPC upgrade card for the 68030 based 550, perhaps using the 32-bit LC PDS slot? Something like the DayStar Turbo 601 that works for the 68030 based IIci/si/vx/vi (Performa 600) via their PDS slots. I think DayStar made adapters that let you...

Apple Personal Diagnostics can do this. https://macintoshgarden.org/apps/apple-personal-diagnostics-111

I use the same 3V Lithium batteries in my Macs that originally had 4.5V Alkaline batteries. Thread on this here: https://68kmla.org/bb/index.php?threads/rayovac-4-5-battery-replacement-hack.39833/

Did you happen to try this yet? I’m contemplating it. I did find this old post that shows a bit more detail: https://web.archive.org/web/20100205012616/http://homepage.mac.com/inachan/mac/pb150/adb/adbto150-e.html

Thanks! I made my own template in PageMaker 5.0 on a Macintosh Performa 600, printed on a LaserWriter 4/600PS. :) I wanted to create a set of Performa System 7.1P disks for it. I think they turned out pretty good text wise, but my blank floppies plastic shield and case color makes them not...

I love this. Those disks look so cool! Where do you get your labels? I bought a pack of new old stock Avery floppy disk labels off eBay but the adhesive is very week...

Yeah, I have a few of these, they work great. It's a shame Apple never marketed them well due to pressure from IBM. Even the version without the DSP daughtercard is better than the 100Mhz PowerPC Daystar Power 601 upgrade card with 68k apps. It was such a shame when the Illuminati, IBM's Deep...

I've played with the Farallon version of this. Faster than LocalTalk, slower than Ethertalk, AppleTalk using the same serial port as LocalTalk. Without the special Farallon drivers the device still works but at normal Local Talk speeds. As BlueSCSI v2 with Pico-W allows you to emulate a...

I think its doable but if you don't have another use for the PDS slot not sure it would make sense considering you have a working Ethernet solution. But of course there is alway, "because it would be fun/cool for me to do" reason! This is a bookmark I had that you may have already seen...

I do but it has a Quadra 610 logic board in it! I couldn't get the original one (C 610 w/Ethernet) working. I did know there is a work around to take those boards to 25Mhz with working Ethernet just thought I'd bring it up in case it would be an issue and wasn't their radar :) ... I see the...

Does your Centris 610 board have built-in Ethernet? If so I seem to recall there are issues with this type of clock upgrade due to the oscillator being shared between the CPU and Ethernet (for its 10MHz clock)

Maybe its a 128MB module designed for the original PowerBook G3, pretty sure not all modules work the same between that machine and the PowerBook 3400 (its immediate predecessor) that otherwise use mechanically identical/compatible modules. You can look at the hardware dev notes for both...

I wonder if the original CD these Dev notes came from included info on what you needed to view them? Thanks, enjoying a first read of the LC one. I'm such nerd for these docs I feel like I'm studying the Dead Sea Scrolls. So far my favorite new (to me) insights: Page 18 - VRAM Options: No...

Amazing work. …really just awesome!

Wow! Awesome work @jmacz !

Two prong: Parts I used: ABS Plastic Electrical Project Case Power Junction Box 5.5mm x 2.1mm DC Power Supply Jack Socket Female Panel Mount Connection 16V 4.5A 72W AC Adapter Charger for IBM ThinkPad Checking a working original PS, yes the AC input ground is connected to the DC output...

Woo-hoo! If it works it works!