MFCS(4) (Amiga)

MFCS(4) | Kernel Interfaces Manual (Amiga) | MFCS(4)

# 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.

July 23, 1995 | NetBSD 7.0