1 .\" Copyright (c) 1990, 1991 The Regents of the University of California.
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4 .\" This code is derived from software contributed to Berkeley by
5 .\" the Systems Programming Group of the University of Utah Computer
6 .\" Science Department.
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31 .\" from: @(#)dca.4 5.2 (Berkeley) 3/27/91
32 .\" $NetBSD: mfcs.4,v 1.6 2002/02/13 08:17:54 ross Exp $
40 .Tn BSC/AlfaData MultiFaceCard II/III
41 serial communications interface
43 .Cd "mfc0 at mainbus0"
44 .Cd "mfcs0 at mfc0 unit 0"
45 .Cd "mfcs1 at mfc0 unit 1"
48 .Tn MultiFaceCard II/III
49 controls, among other things, a dual port
54 communications interface with a multiple character buffer.
56 Input and output for each MultiFaceCard III line may set to a maximum baud
57 rates of 1152000. Formula for baud rate: Baud = 230400 / N with 1 \*[Lt] N \*[Lt] 65536.
59 Input and output for each MultiFaceCard II line may set to a maximum baud
60 rates of 57600. Formula for baud rate: Baud = 115200 / N with 1 \*[Lt] N \*[Lt] 65536.
67 .It mfcs0: fifo overflow.
68 The four-character input
70 has overflowed and incoming data has been lost.
71 .It mfcs0: %d buffer overflows.
72 The software based input ring buffer
73 has overflowed %d times and incoming data has been lost.
81 device first appeared in
84 The MultiFaceCard II/III serial ports use the level 6 interrupt and may
85 experience fifo overflows if the LEV6_DEFER option is used.