Frankly, I have just got crystals off the shelf for years without knowing what type they were, simply because most sales people don't know, and I don't expect them to. All crystals have worked. These days I buy in quantities that enable me to order Microprocessor specific Crystals. Even the Digi-Key Catalog specifies a 4Mhz series Crystal for a 6809, and a 20pf for a Z80A, but then they also specify a 4Mhz 20pf unit for a Z80 and these things don't run at 4Mhz. Back to The Table of Contents.
Options are many.
I have put the board together, and are having trouble communicating to it from my pc. I have tested the com port and it tests fine. I figure that the serial cable or jumper pins may be incorrectly set. What are the settings for J7, J14, and J15. Must be something very simple, but i have missed it.