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Jörgen Andersson4-Dec-19 5:18
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honey the codewitch4-Dec-19 5:20
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GeneralDoes anyone know how to talk to a memory stick? Pin
CodeWraith4-Dec-19 3:01
MemberCodeWraith4-Dec-19 3:01 
I mean the low level protocol, not some framework, API or driver. In my ongoing quest to interface modern devices to very old 8 bit computers I have stumbled over this:

DEBO USB TTL: Raspberry Pi -USB-TTL-Schnittstellenwandler, CH340G bei reichelt elektronik[^]

Not really rocket science. With this I can send and receive bytes from a USB device with a simple UART. This would solve a few problems at once. A simple cheap memory stick would be all the hard disk' an 8 bit computer would ever need. Don't worry about speed. Mass storage is for many reasons a relatively slow affair on 8 bit computers, beginning with their low bandwith on the bus. Remember what Commodore did with the C64's floppy drives? I could also use a USB keyboard or a mouse.

So, with that converter and a UART I can now talk to USB devices. Can I also hook up a USB hub to it and access several USB devices over the same UART? How do I select devices? How do I request or send bytes? Some kind of USB protocol with an embedded device specific protocol?
I have lived with several Zen masters - all of them were cats.

His last invention was an evil Lasagna. It didn't kill anyone, and it actually tasted pretty good.

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