pyl85 Posted May 20, 2006 Share Posted May 20, 2006 Just about to start my second attempt at modding a fb2. I was wondering if anyone else had rigged up a way for the fb2 to automatically detect if there's a cartridge inserted and, if so, to switch to "cart mode." I followed the link to John Soper's page detailing how he did it with a quad analog switch. Looks good, but I don't have the required chip and Radio Shack doesn't appear to carry them. I'm going to try to use some of the 2N3904 transistors I have left over from the CD4050 A/V mod. No idea if it'll work, but, hey, that's half the fun I just thought I'd ask if anyone else had modded their fb2 with auto-cart support and if so how. Thanks, Greg Quote Link to comment Share on other sites More sharing options...
phil_vr Posted July 15, 2006 Share Posted July 15, 2006 Just making a good guess that it could work in a "petended way". I havent modded anything, I just fiddle with things. If you use a switch (say from a broken computer joystick) in a way that once the cartridge is inserted and fully in, the bottom cart part to press this switch, therefore enabling the cart option, and once there is no cart inserted to press the switch then it would be running in the built in mode. it cant be that hard, but like I mentioned, I am just speculating. I guess it can be pretty tight in the FB2 case, but I think it is possible. Quote Link to comment Share on other sites More sharing options...
jbanes Posted July 15, 2006 Share Posted July 15, 2006 Member jsoper has a website with quite a few mods, including the circuitry for an autoswitching cartridge mod for the Flashback 2. Quote Link to comment Share on other sites More sharing options...
jsoper Posted July 15, 2006 Share Posted July 15, 2006 After I did my mod, I came across a few carts where it wouldn't work because the cart didn't short the two ground connections together. Activision Boxing was one if I recall. It's funny because Kevin Horton stated all carts worked when he invented the trick for Bankzilla and you don't catch Kevin being wrong very often. Curt's original suggestion of leaf switches is probably better. Quote Link to comment Share on other sites More sharing options...
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