The strategy I described above doesn't work with an empty chip though. So the DOS flasher is still a good idea.
Anyway...I finally grew a pair and screwed around with the original working chip. Yep, we're all good. ROMFILE.1S2 is a valid file to flash to the chip, either through the DOS flasher or the WiebeTech flasher (except we already know Wiebetech doesn't support Macronix chips in its flasher :-( ) OK, I promise I'm done adding a bunch of random info to this thread! Whew
Edit: I lied, one more update. I started decoding the PCI option ROM. It includes an OS 9 driver as well as an OS X mkext, version 1, which is encoded using LZSS just as I suspected!
Anyway...I finally grew a pair and screwed around with the original working chip. Yep, we're all good. ROMFILE.1S2 is a valid file to flash to the chip, either through the DOS flasher or the WiebeTech flasher (except we already know Wiebetech doesn't support Macronix chips in its flasher :-( ) OK, I promise I'm done adding a bunch of random info to this thread! Whew
Edit: I lied, one more update. I started decoding the PCI option ROM. It includes an OS 9 driver as well as an OS X mkext, version 1, which is encoded using LZSS just as I suspected!