What can I check if my 1988 Mazda 323 has no spark commimg from the coil?

There are a few steps: The easiest will be to try using the coil from another vehicle preferably one from a car with te same engine size ( DONT WORRY THE BORROWED COIL WONT DAMAGE). Also try changing out the wires between the coil & distributor. Lastly check the wires that should deliver power to the coil. Hope this helps ;-)