One interesting thing I've discovered recently is that everyone (including myself) is doing the ROM SIMM pinout slightly wrong when used in Quadras. The existing programmable SIMMs seem to work in the 610/650/800 and 700/900/950, but I think the onboard ROMs aren't being properly disabled, as someone discovered when trying one in an LC 475. I'm probably going to write a blog post about the topic soon.
Also, some exciting news is that ROM disk hacks are definitely on the way for the Quadras. It's possible to unlock the full 8 MB of ROM space in several of the Quadras. I've seen video of a Quadra booting from a 7 MB ROM disk. Too bad most of them after the 700/900/950 don't have the socket populated :-( The pads are there at least, for people who dare to add it themselves...
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One interesting thing I've discovered recently is that everyone (including myself) is doing the ROM SIMM pinout slightly wrong when used in Quadras. The existing programmable SIMMs seem to work in the 610/650/800 and 700/900/950, but I think the onboard ROMs aren't being properly disabled, as someone discovered when trying one in an LC 475. I'm probably going to write a blog post about the topic soon.
Also, some exciting news is that ROM disk hacks are definitely on the way for the Quadras. It's possible to unlock the full 8 MB of ROM space in several of the Quadras. I've seen video of a Quadra booting from a 7 MB ROM disk. Too bad most of them after the 700/900/950 don't have the socket populated :-( The pads are there at least, for people who dare to add it themselves...