This gets rid of a very destructive part of the construction of these adapters.īack in the late 80s and early 90s, when the Amiga was relevant as a technical revolution, I was never able to lay my hands on anything beyond an 68000 with 7.14MHz. A smarter and cleaner way that I learned from Adam, is to use a third PGA socket to keep the distance and separate the 5V and 3.3V circuits safely. The original 68060 adapter instructions suggested to cut the VCC pins between the upper and lower PCB. My favorite of these tricks is to use actual PGA sockets instead of cutting 400 single pins out of pin headers. Adam Polkosnik has perfected his way of making 060 adapters and was kind enough to teach me all of his secret tricks, some of which I will document here. And with so much visibility, it makes sense to learn from the others out there. This led me to attempt another approach to making 68060 adapters, this time I could maybe be less of a butcher with a soldering iron. This has vastly improved my ability to see what I am actually soldering, instead of almost flying blind. In the last month I have made a serious improvement of my lab: a simul focal microscope with double boom stand. For the sake of space, those could be replaced by nice little 0603 RNs.Īn evening with KiCAD and a few more days of waiting on a PCBway delivery, and here it is: Exciting! New PCBs (with GND connection!)Īlright, there is some progress on the front of my 68040 to 68060 adapters. Compared to the original design the KiCAD version by richx used single resistors instead of resistor networks.The interconnect between the two boards was oddly misaligned with the rest of the pins, making it impossible to use the substrate of the socket to keep them nice and tidy (and giving another reason for more dremeling.I had to dremel the sockets I got into shape because they tried to occupy the same space as the other parts on the PCB, in clear violations of the physical laws of this time-space.I had also disliked some of the characteristics of the old design. But I promised, I would get this working. The good news? No Amigas, and no 68060s were harmed in the production of that episode. In my second attempt I found out, that I had forgotten to refresh the fill zones in KiCAD - What a rookie mistake, that left half a dozen 68060 PGA sockets dead, soldered onto PCBs where VCC and GND were never connected to the mainboard. I was so excited, that I sold it on eBay and started to make another one. Remember, earlier in my adventure I built one of these adapters with a PCB made by OSHpark. And so I set out to make a third and final attempt at reliably delivering great 68040-to-68060 adapters. come in threes, they say, or ' Aller guten Dinge sind drei' in my native tongue German.

Amiga mac emulator card