Hey bro!
Having burned several GhD tunes with Batronix's Eprommer device, I have to tell you that the most current version of GhD, 2.2.1 with boost support, takes up about 17,500 out of ~32,700 memory addresses in the 29c256 chip. That is, just over half.
That means you couldn't really put more than one bin into the chip. But it is possible, theoretically, that another version of GhD could be written that has the capability of switching between several different tunes stored in the chip along with the program. There might be clocking issues with the MCU, and possibly other problems as well. So the short answer is, Not right now. But that doesn't mean what you want can't be done the long(er) way. You could also have several different chips ready with different tunes, and you could pop them in and out with (relatively) little inconvenience. Peel the carpet, pop the nuts, yank the plate, pop the plugs, unscrew the screws, latch up the ground strap, yank the chip, pop another one in, do it all again in reverse. Lather, rinse, repeat. Once you get good at doing it, a 10 minute job. And tuning and testing are still possible, given the 10 minute delay each time. Not (much of) a problem. Good luck and have fun...
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