68000 doesn't have a vector base register like 010+. Instead, the vector base is always 0x0, which here is in ROM, which is too much of a restriction. Installing a 010 instead should allow for getting around this.
Also blatantly missing is a NMI switch.
Still, it always makes me happy when I see open SBC designs based on the 68k family. Retrobrew[0] has a bunch of them, and they are less restrictive, or use 030 instead of 000/010.
It seems like the 68030 would be ideal for both power and simplicity; 32-bit, better than the '020, yet easier to build than an '040 or '060 because it still has dynamic range bus addressing[1].
[1]http://s100computers.com/My%20System%20Pages/68030%20Board/6... (ctrl-f for dynamic range bus addressing)
010 are easy to get from china. Some of them might be modern made clones, but I couldn't care less if they're equivalent. This many years later, it shouldn't be hard.
030 is indeed great, although no dip variant anymore.
I just keep them in a box to take them out of circulation, it's not even worth the hassle of returning them...
Of course, buying from China is what it is.
They are however 8/10MHz. Likely pulled from boards. 14MHz DIP are supposed to exist, but unobtanium.
Like a "programmer's key?" ;-) https://en.wikipedia.org/wiki/Programmer%27s_key
Just IPL lines -> diodes -> switch -> GND.
The IPL lines can be found on CPU socket, Paula socket and left expansion port.