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@wottle Thank you for replying, but I was afraid of that. So many brackets use that expansion port, but that doesn't work for a Mac SD, and my middle name is "PDSCARD" so I have the need to mount it in a bracket directly above the floppy drive. I could just hack off the back end of the stock...

Does the eery silence mean none of you know? 😨

I've got the v092 firmware flashed to my Universal ROM SIMM in my LC575 motherboard (Color Classic Mystic). Booting into System 7.1, I see I only have 32MB RAM now instead of 36MB, which is expected. I am using the Soft 475 Overclock by @phipli to overclock my 040 CPU, but I am not seeing any...

I'd like to thank @Willj for his kindness in providing me with the following link, which I can now provide to all of you: https://www.peconnectors.com/sockets-pga-cpu-and-memory/hws1788/ That price of $4.85 isn't too terribly bad, but that company is extremely frustrating when it comes to...

SE & SE/30 Drive Bracket Aficionados, I installed my MacSD (created by @YMK ) into my SE/30's stock metal bracket as shown below (my finger is touching it), but I hate those brackets because they cover the main wiring harness connector and make it a huge PITA to remove that connector! My Mac...

Thanks for the feedback, @dougg3 ! I wouldn't worry about that. I was actually rather disappointed this thread hadn't gotten more traction and largely was falling by the wayside. So this recent dialog about the programmer is a adding a nice "bump" to the thread. I suspect that one reason...

@dougg3 I'm going nuts! Just fired up my old Intel mid-2015 15" MacBook Pro running MacOS High Sierra and downloaded your v2.0.1 SIMM Programmer app. Sadly, when I launch the app and then switch on the ROMmate Programmer v2, the app won't recognize the programmer. 🤦‍♂️ Used Boot Camp to boot...

Had no time to try and flash the v091 or v092 ROMs until this evening, but sadly, my ROMmate v2 programmer simply is refusing to do the job! Is the SIMM Programmer app incompatible with macOS Sequoia? I tried using my standard cable multiple times to no avail. I tried multiple USB-A to USB-C...

This thread caught my eye today, and it raised one big question in my mind... How do you NeXT owners use the machines? For example, I can tell you how I use my vintage Macs (which are mostly 68K machines): Gaming, HyperCard, Photoshop (believe it or not, yes), Benchmarking...

After my 84V mod (640x480), the heat of the 18V 5W Zener used at DL22 caused me a lot of lost sleep. I just wasn't satisfied with the heat it put off. After some in-depth study, it seems the way these Zeners keep cool is to dump all their heat into the legs, which is why the two stock Zeners...

Or a small flathead screwdriver that you can use at each end of the chip to slowly and carefully wedge it out. Mixing the chips won't harm the board.

Congrats, @Mac84 ! I didn't watch your entire video, but I did catch your exuberation and "Holy Crap if F'n works!" :LOL: Glad to see it was just the cable because those solutions really are the best kind. No soldering, cleaning or hacking required in that case! Just curious though if...

The rubber gel-filled shock absorbers used in my HyperDrive kit have done well through the years, as you can see in these photos: The drive is completely suspended by them. That was an appropriate measure to take to protect those extremely sensitive and expensive drives at the time. But...

Really? SCSI? If you don’t have an ancient PC that might me able to extract data from it, I’d suggest reaching out to Adrian of Adrian’s Digital Basement because I know he has such a setup and he might be able to extract data from it if you ship it to him. Packing it to avoid damage will be...

Anything connected to that BU406 transistor is a candidate for possibly being bad if the transistor dies and fries, but that appears not to be the case in your machine. It should be simple enough to desolder that resistor and test it though. Don’t rely on your “beeper mode” (continuity mode)...

I highly doubt the caps are the reason, but full disclosure, I did recap the drive mechanism in my HyperDrive Mac, in addition to its dedicated secondary PSU. But I had no issues with the HyperDrive kit prior to that Not sure the lack of head movement is the issue. I don’t think there is any...

Below are my two videos on the recapping and testing of that PSU. The only issue I had was with one capacitor that had ESR too low, and buying one with slightly higher ESR resolved it. But even with the low ESR cap, the power supply did work. Voltages were normal. So I must assume that...

I vividly recall seeing the "Tecmar Sweetens Apples" full page ads in my early MacUser magazine issues back in the day. I recall thinking, "Man that thing is massive!" even back then. But, Steve, after seeing your photos, that thing looks even bigger! 😅 I have a GCC HyperDrive 10MB kit...

Both ROM chips and the SWIM (or IWM on the 800K drive version Motherboard) should be socketed like this... If you have a mix of ROM versions and have a SWIM and IWM, just put a sticker on each chip and mark what is what before you start swapping. That's easier than looking up the part...

I have the Performer and WarpSE (prototype) and never had that behavior when using my FEMU on my SE. It seems you have more than one SE motherboard and different experiences with each. The ROM and SWIM (or IWM) are all socketed, so you may wish to try swapping out those chips to see if it has...