RS232

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Revision as of 21:22, 25 July 2019 by Gpz (talk | contribs) (using a real RS232 port)
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here i will track some things regarding rs232 emulation, and perhaps fix things while at it Gpz (talk) 19:29, 25 July 2019 (CEST)

using a real RS232 port

This works by using the device name of your OS, VICE uses physical RS232 ports.

linux

/dev/ttyUSB0

status: working out of the box

windows

  • the windows driver understands various options passed in the so called "mode string" after a colon after the ports name
COMx[:][baud=b][parity=p][data=d][stop=s][to={on|off}][xon={on|off}][odsr={on|off}][octs={on|off}][dtr={on|off|hs}][rts={on|off|hs|tg}][idsr={on|off}]
  • finding out what COM port the usb adapter ended up might be tricky, you can use a tool like "Keyspan Serial Assistant"

status: working after some massaging of the code

rs232 over ip

This works by using the IP and port you are connecting to, VICE will use a TCP socket.

linux

status: untested

windows

connect two VICE instances on the same host

socat tcp-listen:25232 tcp-listen:25231

config instance #1

127.0.0.1:25232

config instance #2

127.0.0.1:25231

status: works

piping to an external program

linux

status: untested

windows

status: untested

TODO

  • whether the "UP9600" (daniel dallmann) hack is being used seems to depend on the baudrate(?). this should be a seperate option

driver issues

  • handling of DTR and RTS seems to be completely missing. rs232dev_set_status, rs232dev_get_status, rs232dev_set_bps apparently are not called by the layer above

user interface

  • a couple of typical rs232 settings should probably be configurable for at least "real rs232 port at host". (behavior of DTR, RTS...)

links