NAME
mfcs —
BSC/AlfaData MultiFaceCard
II/III serial communications interface
SYNOPSIS
mfc0 at mainbus0
mfcs0 at mfc0 unit 0
mfcs1 at mfc0 unit 1
DESCRIPTION
The MultiFaceCard II/III controls, among other things, a dual port EIA RS-232C
(CCITT V.28) communications interface with a multiple character buffer.
Input and output for each MultiFaceCard III line may set to a maximum baud rates
of 1152000. Formula for baud rate: Baud = 230400 / N with 1 < N < 65536.
Input and output for each MultiFaceCard II line may set to a maximum baud rates
of 57600. Formula for baud rate: Baud = 115200 / N with 1 < N < 65536.
FILES
-
-
- /dev/ttyA?
-
DIAGNOSTICS
- mfcs0: fifo overflow.
- The four-character input “fifo” has overflowed
and incoming data has been lost.
- mfcs0: %d buffer overflows.
- The software based input ring buffer has overflowed %d
times and incoming data has been lost.
SEE ALSO
tty(4)
HISTORY
The Amiga
mfcs device first appeared in
NetBSD 1.1
BUGS
The MultiFaceCard II/III serial ports use the level 6 interrupt and may
experience fifo overflows if the LEV6_DEFER option is used.