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dart(4/aviion) MC68681 or MC68692 dual UART
dart(4/mvme68k) MC68681 or MC68692 dual UART
dart(4/mvme88k) MC68681 or MC68692 dual UART

DART(4) Device Drivers Manual (aviion) DART(4)

dartMC68681 or MC68692 dual UART

dart0 at syscon0 offset 0x82000
dart1 at syscon0 offset 0x82c00

The MC68681 and MC68692 dual asynchronous receiver/transmitter (DUART) component provides two serial ports, as well as a 16-bit programmable counter/timer.

The dart driver provides support for the two serial ports found on board all AViiON systems.

The dart serial ports have a two character buffer on the transmit path, and a four character buffer on the receive path.

The following link speeds are supported by the dart driver: 50, 75, 110, 134.5, 150, 200, 300, 600, 1050, 1200, 1800, 200, 2400, 4800, 7200, 9600, 19200 and 38400 bps.

/dev/tty[ab] dart0 serial ports
 
/dev/tty[cd] dart1 serial ports
 

intro(4), tty(4)

October 15, 2013 OpenBSD-5.5