> How about something like a digital camera memory card?  Those
> can usually be talked to via SPI.  You'd still have to do the FAT
> file system in fimware, but that's a lot easier than a USB host driver.
> Memory card readers are cheaply and readily available for PCs

Thanks for the replies. I didn't think I'd missed a solution for a
thumb drive, and did see a lot of references to other memories.
ISTR Microchip has a FAT16 library for SD/MMC

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