The PluggedIn program website, where such information should be available, says nothing whatsoever about OS5. It includes the SDK (which says it is for OS 4.0), and Palm's own "EDK" (Expansion Development Kit) which is also only good on PalmOS 4.0. There are a few frustrated posts from SDIO developers looking for information, all of which are unanswered by anyone from Palm who really knows.
I have good anecdotal evidence that PalmOS 4.x devices use SPI mode to transfer data, but that PalmOS 5.x devices use SD 1-bit mode. However, I'm looking for confirmation of that fact from more than one source.
Are there any other SDIO developers out there? If so, please write me off list so we can share our meager scraps of information...
Dave Johnson
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