If anyone knows please educate me. wa9yoz sent me the Firecracker card, and he sent it with a disk that has some files on it. They're files entitled RGBdown for example. Some are for the old Turbo Silver program. There's no documentation about where to put them (if they're all you need)
One item that goes along with it, that must be Uber rare is a cable that goes from the Amiga RGB port to the Firecrackers 15 pin connector, thence to the monitor.