July 23, 1995 MFCS 4 amiga

### 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 NetBSD1.1

### BUGS

The MultiFaceCard II/III serial ports use the level 6 interrupt and may experience fifo overflows if the LEV6_DEFER option is used.