Request: Serial adapter

[norrinr]

Some kind of serial adapter emulation to connect to Mister's serial capability would be really nice. If there was a full on 850 Interface or P:R:Connection would be really cool, but there's always just SIO data in/data out.. and maybe CMD?

[ojaksch]

I'd also love to have a USB<->SIO connection. Hardware is simple and basically consist of a FT232RL device, some wires and a (3D printed) SIO connector. I'm sure that the main part would be to implement this in the code. We should build a bounty for that.

[ojaksch]

I want tp bump this while reading the part of the C64_MiSTer, where they're using MiSTer's USER_IO to create an interface to the appropriate hardware. The Atari needs four wire only, according to the many "SIO2USB" writeups:

MiSTer -> Atari
TXD -> Data-In (Pin 3)
RXD -> Data-Out (Pin 5)
GND -> GND (Pin 4)
CTS -> Command (Pin 7)

That way, using a level shifter and a corresponding implementation to the core it should open the world to external Atari hardware like disk drives and printers (!). Would be great to see this coming to light.
I would be happy to test this accordingly.

[sorgelig]

the one who has real SIO hardware can try to make it. I have no such HW and i'm not familiar with Atari in general.

[ojaksch]

The hardware/physical interface should not be that problem as it's in fact more or less a primitive serial connection on SIO side. I have tons of Atari hardware I could test with - but one has to implement this on Core's side first (USER_IO and it's "wiring" to SIO-code).
I don't expect you to do that (but would love to experience that)...I'm just want to keep and bump this extension active in hope someone does.

[go2tom42]

bump

[sorgelig]

@go2tom42 will you be able to make level shifter board and test with real external device?