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UCOM(4) Device Drivers Manual UCOM(4)

ucomUSB tty support

ucom* at moscom? # MosChip Semiconductor MCS7703
ucom* at uark? # Arkmicro Technologies
ucom* at ubsa? # Belkin
ucom* at uchcom? # WinChipHead CH341/340
ucom* at ucycom? # Cypress
ucom* at uftdi? # FTDI
ucom* at uipaq? # iPAQ
ucom* at umcs? # MosChip Semiconductor multiport
ucom* at umct? # MCT
ucom* at umodem? # Standardized umodem
ucom* at umsm? # Qualcomm MSM
ucom* at uplcom? # Prolific PL-2303
ucom* at uscom? # simple USB serial adapters
ucom* at uslcom? # Silicon Laboratories CP2101/CP2102
ucom* at uslhcom? # Silicon Laboratories CP2110
ucom* at uticom? # Texas Instruments TUSB3410
ucom* at uvisor? # Handspring Visor
ucom* at uvscom? # SUNTAC Slipper U VS-10U

The ucom driver attaches to USB modems, serial ports, and other devices that need to look like a tty. The ucom driver behaves like a tty(4): this means that normal programs such as cu(1) or pppd(8) can be used to access the device.

The portno locator can be used to decide which port to use for devices that have multiple external ports.

tty devices
call out devices (see tty(4))

intro(4), tty(4), usb(4)

The ucom driver appeared in NetBSD 1.5. OpenBSD support was added in OpenBSD 2.7.

September 23, 2015 OpenBSD-6.2