I use an ATF22V10C and the /OVR signal to disable the internal Kickstart. To switch between the two Kickstarts in the flash I just use a jumper where a switch can be connected.
intric8 wrote: ↑Wed Nov 11, 2020 6:33 pmI have a feeling this would not play nice with my Rejuvenator, but I could be totally wrong. It happens all of the time.
Speaking just for me, since I have neither a TF or Vampire, can you explain a little bit more about the "FPGA socket to use an FPGA as a CPU emulation"? That sounds very interesting. You might should consider making this board its own thread whenever your boards arrive. (Or, I think I can help with that now if you like.)
I think it would also be quite cool - since I'm just dreaming here - if the expansion could be easily disabled via hardware switch in case one wanted to load a game via floppy that has to be booted.
As an A1K fan that uses his expansion port today, my only concern would be if I could continue to use my Microbotics 2MB RAM that I also use for its SCSI port. That's how I boot via "hdd." I wonder if I could stick this board out of the Microbotics side port? Oh man that would look nuts, but it would be an interesting experiment for sure.
Not sure about you guys, but the expansion ports on some of my A1Ks can be a bit finicky at times if the connection isn't spot on. Sometimes how an expansion "hangs" on the outside can have a dramatic effect on it working, even if the angle change is a fraction of a millimeter.
Some time ago saw an Amiga 1000/ps2 keyboard adapter on ebay...try to search!nospam2000 wrote: ↑Thu Nov 12, 2020 3:30 pmThere are products for USB to Amiga keyboard adapters, e.g. "Sum A234/CD32". Unfortunately the A1000 has a different connector, but I think the electronics are the same.
I was asked to build such an adapter as well, but that is another project.
EzdineG wrote: I've been meaning to update the original post with more information regarding PAL units.:
NTSC / PAL motherboards with daughterboard:
U6J - Bend pin 17 out or cut on daughterboard
U4K - Connect pin 1 & 20 with 4.7kOhm resistor
U6L - Connect Pin 13 to Kickstart board J1
PAL motherboards with no daughterboard:
U6N - Bend pin 17 out or cut on daughterboard
U3J - Connect pin 1 & 20 with 4.7kOhm resistor
U4S - Connect pin 13 to Kickstart board J1
1206 is the resistor footprint. For the sockets, I use double wipe DIP sockets for the ROMs. Since I haven't been able to find a DIP for the 68000, I used machined sockets. Pins...machined pins for sure. Trying to use anything else, like square pin headers and such, will mess up the socket on the motherboard.