Recent content by Ubik

Hi @JDW! Thanks for the exciting news on the WarpSE. The WarpSE looks like a fantastic and very balanced accelerator! Your are right, there will be a big difference between 3 and 4 CPU results in Speedometer 3. I can't wait until the WarpSE is ready for sale! Regarding the Speedometer...

Thanks @nekogahora280. I will try a 36Mhz clock. BlueSCSI v2 does not do well on SE benchmarking. The disk seems fast when using the Mac, but I'm going to flash the latest BlueSCSI V2 firmware to see if this may help benchmarks. On the memory I ordered 9 chip 4MB 30 pin 70ns SIMMS, which...

The story continues here . . . https://tinkerdifferent.com/threads/total-systems-gemini-ii-accelerator-for-the-se.4538/

I love making the lowly SE faster, since that was my first computer back in the late 80s and early 90's, and accelerator boards were an economical upgrade path compared to the $4,000+ dollars for a loaded SE/30 from the college bookstore. So I am always on the lookout for cool SE accelerators...

@nekogahora280 - Thank you so much! I'm still waiting for delivery, although it has cleared US customs, so now I am waiting for the US Postal Service. I think Japan Post is faster, than US Post. :-) These pages provide a lot of clues about the memory settings. I have attached a PDF...

Late to the party, but welcome @Performaguy!

Yes @nekogahora280 I purchased your Gemini II. I will be honored to take good care of it, and I will post my benchmarks and photos :) In the meantime, I hope the Gemini 020/030 comes back to life somehow. I may try this board in my spare SE.

A sad update. I tried to update the 32Mhz crystal with first a 50mhz one and then a 40Mhz one with no luck. The SE would not boot. I went back to the 32Mhz crystal and all was good. (I should have stopped there). Then I got an idea to try to remove the on board RAM and try the faster...

Very cool! Fascinating to see the evolution of the board. That was about the time I purchased my SE for college. I recall when I went shopping for accelerators that the Geminis went for a premium. I guess now I know why.

Hey Jeff, after I got the board I poured over your post on 68KMLA! Amazing design. The amount of engineering effort and investment was significant. It was that rare time when upgrading the SE, Plus and 512 was a the main focus of the burgeoning accelerator industry. I’d love to know the...

FYI - I created a related post - Accelerating an Accelerator - Total Systems Gemini 020 to 030 for Macintosh SE

I was blessed to find a Total Systems Gemini 020 for Macintosh SE (Also called the Quesse PDS accelerator for SE). These accelerators, which came out around 1988, were designed to be upgradable to the 030 and had excellent performance, besting the SE/30 and IIx in real world tests. See MacUser...

Hi all, Does anyone have any recommendations for the best way to search and buy vintage computing equipment from Japan?

Link to Eric Woo’s Rare Chips https://ebay.us/m/S158j8

Thanks @Kai Robinson !