I have the cheat sheet card to use with CA card switches and LEDs. However its been so long since I have programed the FS90 that I do not remember how to get into the program mode. I thought the toggle sw on top of CA card would get me in, but it didn`t seem to work. I was afraid to hold it on too long use other switches in conjunction for fear of loosing existing programing. I believe I can manipulate inputs and outputs once I get in, Just need help on the procedure for getting into program mode. 
I know Destin (Safety Team Mod) has owned one of these panels and would probably be able to help you. I’d try sending him a PM.
Unfortunately I don’t know how to get into programming mode. I’d also like to know how, if anyone here has experience with the FS90. RickR, if it’s not too much trouble, could you scan or take a picture of your cheat sheet card?
The toggle switch on the top of the CA card does a warm restart, and there’s also a switch on the bottom. My guess is some combination of these switches will enter programming mode, but I never wanted to try it and lose the existing programming as you said.
The programming instructions for the FS-90 are contained in a, seemingly unrelated, document titled “DeltaNet Fire and Security System Checkout & Test 74-2551.” However, it does not appear to be available anywhere online. RickR, if you have any reference material for this system available I would try to find this document.
