Reply 40 of 53, by Tiido
I made the board myself and all are hand assembled and tested too. It costs 6.25€ to send them to Chile, with tracking. It might be cheaper for you to get them from USA though.
30 to 72pin adaptor is not in the todo list at all, you can buy any sized 72pin SIMMs for very low cost compared to the 30pin ones.
That was a 1st prototype, just a test if it will work. He wrote that if it works he make new better layout and he probably did. I didn't check later as I still have some spare SIMMs so I'm not personally interested. Anyway in this case the traces on such speed are not critical, traces between SIMM slots and chipsets are many times longer...
It may not matter in the end but I like the idea that my thing is in no way responsible for any additional deficiency, theoretical or not. These were made with aspirations of pushing out the absolute maximum out any board around (DRAM chips notwithstanding 🤣). Layout always follows best practices, with care to reduce inductances and impedances to the minimum possible in the design. I do have noticed that large motherboards with big distance between RAM, CPU and cache do not overclock or tolerate tight timings nearly as well as more compact things, this is the main reason 33MHz stuck around for so long. I never use 33MHz and always do 40MHz or beyond and everything must be able to handle it.
also I like your logo 😀
🤣, thänk you ~