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USB to DB9 serial to add a real serial port to computer cores?

Posted: Wed Oct 18, 2023 11:53 pm
by 8bitAndy

Hi, I'm wondering if I can use a USB to DB9 serial adapter connected to the MiSTer to add physical devices through a serial connection. For example, a modem, GPS or Palm Pilot. I would be specifically interested in doing this with the ao486 and miniMig cores.


Re: USB to DB9 serial to add a real serial port to computer cores?

Posted: Thu Oct 19, 2023 5:42 am
by ToothbrushThreepwood

I haven’t personally tested it, but I think you can. You use midilink by @bbond007.
It’s discussed in this thread: viewtopic.php?t=1949


Re: USB to DB9 serial to add a real serial port to computer cores?

Posted: Thu Oct 19, 2023 6:56 am
by Armakuni

The C64 core has serial IEC support via the user port so you can use real disk drives with the core via a simple interface so it is possible


Re: USB to DB9 serial to add a real serial port to computer cores?

Posted: Sun Oct 22, 2023 1:35 am
by 8bitAndy

I'm able to receive data but don't seem to be able to send it. I'm using Hyperterminal in AO486 Windows 95, and NComm in Minimig. I'm connected to a TheOldNet.com Wifi serial modem through a PL2303 USB to serial cable.

I set up the connection as 8-N-1, xon/xoff 300 bps according to the TheOldNet instructions. I see its welcome message and instructions in HyperTerminal but I can't enter any of the supported AT commands. I can't get any response from the modem after the welcome message.

Does anyone have any thoughts on what I could try?