The power supply in the Mac IIsi unalived itself, and I decided I was done. The recap held up for a few years. I checked every solder joint and a lot of components, but it was never in the best shape after being battery bombed anyway. I finally decided to build a CayMac PSU board with new parts. This Mac may be more of a resto-mod at this point but I was happy to see it run again. #mac
1.2.2026 06:11The power supply in the Mac IIsi unalived itself, and I decided I was done. The recap held up for a few years. I checked every solder joint...I started a tradition years ago playing retro games with my kids during the holidays. This year, In a blend of old + new style retro, I found this neat Famicom on Aliexpress that uses a socketed CPU, and an FPGA for the PPU giving you HDMI, VGA, and RGB/svideo outputs. It comes with a Dendy clone CPU, but you can flip dip switches and use a real Ricoh 2A03 or 2A07 PAL CPU. I like that it has real NES controller ports. Works great with a Famicom to NES cart adapter as well. #Nintendo
24.12.2025 21:39I started a tradition years ago playing retro games with my kids during the holidays. This year, In a blend of old + new style retro, I...Snooper testing the 68040 33mhz daughter card in the PowerBook 520c. Now if I could solder a 68RC040 with an FPU that would be fun, but I'll take the 8mhz gains 🙂
22.11.2025 19:58Snooper testing the 68040 33mhz daughter card in the PowerBook 520c. Now if I could solder a 68RC040 with an FPU that would be fun, but...I found sad_mac selling 68040 33/66 daughter cards on eBay for PowerBook 500 series. He has more than 10 and I figure they came out of 540c machines that got PPC upgrades. I only have a 520c and figured, let's see if it'll bump to 33Mhz since the clock crystal is on the card. He offered it to me for $15 plus shipping which was a good deal. Card works great in my 520c. Will run some Snooper tests soon.
https://www.ebay.com/itm/267452380209
22.11.2025 19:02I found sad_mac selling 68040 33/66 daughter cards on eBay for PowerBook 500 series. He has more than 10 and I figure they came out of 540c...I'm not going to say this is the most jank I've done to a machine to get it boot, but this poor IIcx was DOA when I got it. Recapped it. Bad startup circuit jump started with pins 9 & 10 on power supply for now. 4 broken simm slots, in bank A of course. Cardboard to the rescue to prop up some simms. Ooof, it needs some love but it has life! Anyone know of a 3d printed bracket that would hold simms in place on a IIcx? I'm not feeling up to replacing the sockets. #VintageMac
5.11.2025 18:56I'm not going to say this is the most jank I've done to a machine to get it boot, but this poor IIcx was DOA when I got it. ...In my quest to find an off the shelf rattle can for 3d printed parts that matches the 90s Mac aesthetic, Rustoleum Heirloom white is getting closer, but not quite there. I wish it came in matte instead of satin. I've yet to find a spray can called, '90's Mac Grime & Dirt', but I bet there's a market for it. This is even after a round of retrobright on Rusty the 8500. Yikes.
2.11.2025 21:46In my quest to find an off the shelf rattle can for 3d printed parts that matches the 90s Mac aesthetic, Rustoleum Heirloom white is getting...Testing ZigZagJoe's IIsi Booster 2.0 accelerator- Here are some screenshots of the gains. #Macstodon is loading up toots like a boss now 😃 #Mac #VintageMac #68k
30.10.2025 23:34Testing ZigZagJoe's IIsi Booster 2.0 accelerator- Here are some screenshots of the gains. #Macstodon is loading up toots like a boss...Trade show trinkets! Wanted to share some fun CPU keychains and trinkets I've collected. Some have funny stories, like the PPC chips I had sent to me by IBM in high school because I was writing a paper about RISC vs CISC. I wrote IBM a letter and they sent me these cool items. The Intel Pentium I found on eBay and it looked unique. Description said, 'found in a drawer at my new house'. This article explains the history- https://www.chipsetc.com/intel-keychains-page-3.html What cool items do you all have to share?
26.10.2025 01:30Trade show trinkets! Wanted to share some fun CPU keychains and trinkets I've collected. Some have funny stories, like the PPC chips I...@BigBadBiologist Hey BigBad, I was wondering if you had tried these 68030 47mhz w/ 68882 accelerators. They appear to be the 68KMLA design by ZZJ, clock tripled from 16mhz bus. I may try one in a socket on a IIcx. This ebay seller is near me in Round Rock, TX so I ordered one to play with it. He says he makes and tests them himself. He has 4 left.
https://www.ebay.com/itm/335762393095
22.10.2025 16:39@BigBadBiologist Hey BigBad, I was wondering if you had tried these 68030 47mhz w/ 68882 accelerators. They appear to be the 68KMLA design...Holy Oh-Forty! I never tried running these tests before- Quadra 700 Snooper benchmarks with a 50Mhz 68040 accelerator, CPU and Video compared to stock.
https://www.youtube.com/watch?v=m_nN2m3WAXI
https://www.youtube.com/watch?v=mjCyHHdIjU8
14.10.2025 23:22Holy Oh-Forty! I never tried running these tests before- Quadra 700 Snooper benchmarks with a 50Mhz 68040 accelerator, CPU and Video...