A500 Startup Problems with A501 memory card

[Oldsmobile_Mike]

Nice design!  Probably obvious but have you tried it on different A500's, different models of motherboard, etc.?

[Oldsmobile_Mike]

Try posting where you're located?  Maybe someone else local to you would be willing to help test with their machine?  Just a thought!  

[Oldsmobile_Mike]

Keep testing, glad you got it working on the one!  It's a bit of a drive but check out the thread on here about our Baltimore/Washington meetup group, if you were ever able to come down I could bring at least my A500 for you to test on (it's pretty heavily expanded, so might make a good test platform).  Good work!