NAME
apci —
Apollo utility chip serial
communications interface
SYNOPSIS
apci* at frodo?
DESCRIPTION
The apci driver supports the non-keyboard
8250-like UART connected to the
frodo(4) Apollo utility chip. The first UART is used to communicate
with the Domain keyboard. The second is the serial console port when the
firmware is in Domain/OS mode, and is mapped to select code 9 by the HP-UX
firmware (except on 425e models). As such, the second UART is handled by the
dca(4) driver on all models but the 425e.
There is no tty attached to the first UART as it lacks modem/flow control and is directly connected to the keyboard connector.
Input and output for each line may be set to one of the following baud rates: 50, 75, 110, 134.5, 150, 300, 600, 1200, 1800, 2400, 4800, 9600, 19200, or 38400.
FILES
- /dev/ttya[0-3]
- /dev/cuaa[0-3]
DIAGNOSTICS
- apci0: silo overflow.
- The single-character input “silo” has overflowed and incoming data has been lost.
SEE ALSO
BUGS
Much of the code in the apci driver could
be shared with the dca(4) driver.