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A few months back I picked up a DayStar PowerCache 50mhz card for $250, plus $25 for the Mac II adapter the guy had. Granted it is not a Diimo, but it's a data point. I don't know if the Diimo cards are more desirable. You could also check eBay sold auctions.

In both my accelerated Plus and accelerated SE my FloppyEMU will not work in HD20 mode, I get the same "READ STATE CHANGED" error. From what I have read the FloppyEMU does not work well with accelerated Macs.

I have a CC that I suspect has a bad CUDA chip. I found the list below of CUDA variations from an old post. Does anyone know if any of these are compatible with the CC? It appears the CC is the only machine that uses the 341S0417. From what I can find online 341S0788 seems to be used in...

Thanks, I'll try those suggestions.

Unfortunately the only external SCSI drive I have is the BlueSCSI, all my spinning platter drives are internal, and I don't have any sort of adapter or enclosure to adapt the 50 pin dive to the DB25 port on the Plus. That's good to know about the SCSI2SD and potential ZuluSCSI working with...

I recently installed my Performer clone accelerator into my Plus and have found it seems to be incompatible with my BlueSCSI v1.1. Does anyone know if there are any SCSI emulators that work with an accelerated Plus? I know the Plus's SCSI implementation is a bit non-standard so they have...

It's always interesting to hear people's real-world stories about these old machines.

Another alternative until the WarpSE is completed is a MicroMac Performer clone. If you are into tinkering it's a fun project, I did a write-up (link) to my build.

Unfortunately I don't have a pic of the accelerator compared to stock, and somehow my Speedometer records file became corrupted, so I don't have easy access to that info without re-running the tests. The increase was significant though. The pic below is from an accelerator benchmark thread on...

Well I spoke too soon, shortly after that May 2nd post the machine began the death chime again and would not boot. I put it on the back burner since I did not have time to work on it. I decided to work on it some more recently, I replaced the ALS245 chips with new chips from DigiKey, there is...

Thank you James! Correct on the solder paste. I ran a bead along the pads, set the chip in place, and used hot air. After using hot air it looked like there was a bit of un-melted solder paste behind the legs, that is why I followed up on each leg with my iron. That seemed to pull the...

I just finished my build of a Performer accelerator clone for the Mac Plus/SE. Enormous thanks to @Bolle , he reverse-engineered an original accelerator and posted the board file online, along with the GAL files. Thanks to DrGonzo, his thread on 68kMLA about his Performer build inspired me to do...

A couple years ago I bought a 512k with a non-working HyperDrive 20 internal HD. On first inspection it was obvious a component on the MiniScribe 8425 controller board had failed and damaged the board. I found a replacement drive, sold as working, but the new drive also showed no signs of...

Thanks, I have reached out to them.

I'm fine to do this sooner than later, even if I don't find enough for a group buy, I'm sure I could sell them at cost to other enthusiasts in rather short order. I'll have to sit down and do some research, I know there was a prior group buy thread, I'm sure someone knows exactly what to order...

Is anyone currently planning an SE/30 reloaded group buy? If not, would anyone be interested if I put together an order?

I am looking to replace the onboard RAM of my IIsi, I believe some of the chips may be failing. I found some chips on eBay that I think will work, but I'm hoping someone with more knowledge can confirm. My IIsi currently has OKI M514256A-80J chips, the ones I found are Fujitsu MB81C4256A-70PJ...

Does overclocking to 25mhz cause a problem with NuBus video cards using a PDS -> NuBus adapter?

Responding to my post in case someone runs across this in a search. Death chime fixed! Hopefully this info helps other people with the same issue. Steps taken: Re-flow all the onboard RAM, the legs of the chips closest to the leaking caps showed corrosion. This did not fix the problem, but...

Thanks, good info!