iscc - serial communications interface
controller iscc0 at isa0
An onboard Zilog 8530 DUART provides AXPvme-based Single
Board Computers with console (CON) and auxiliary (AUX)
serial communications ports. Both serial communications
ports can operate at baud rates from B50 to B38400,
excluding B134 (see tty(7)).
On AXPvme Single Board Computers configured with a graphics
head as the system console, the CON serial communications
port (/dev/tty01) is available for use by application
programs as an additional communications port.
In the absence of a graphics head, the CON serial communications
port (/dev/console) becomes the system console.
When used as the serial system console, the CON serial
communications port always operates at 9600 BPS, 8-bits,
and no parity.
Regardless of system console, the AUX serial communications
port (/dev/tty00) is always available for use by
Data communications equipment attached to the CON serial
communications port must be set to 9600 BPS, 8-bits, no
parity when configured as the serial system console. The
iscc terminal driver enforces this restriction.
No modem control is supported for either the CON or AUX
serial communications ports.
console terminal local terminal local terminal
console(7), devio(7), tty(7), MAKEDEV(8)
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