" Anyone one got a 23 - 15 pin (mac style) video pass-through cable for my Firecracker24?"
I have several for each of the FC24's I have, so I cant spare one, but I will take one apart and post the connector-2-connecto pinout.
IMNSHO, The FC24 has THE BEST RGB @ NTSC freqs ever made - owning, and using that card has made me tens of thousands of dollars in the 90's using AdPro, ImageFX, and Imagine. You really need the cable so you can genlock and use 2+ FC24's at a time, or overlay dPaint animations or cyclecolor effects on top of pixel perfect 24 bit backgrounds.
The RGB&H&V connector pinouts will be easy, but as I recall the 28M genlock signal is going to be the trickiest conduit for you to replicate - it was a pretty custom cable - dont even think of extending the length of it with a 15pin joystick extender cable!!!