192 lines
6.3 KiB
Groff
192 lines
6.3 KiB
Groff
.\" $NetBSD: zstty.4,v 1.8 2004/05/11 22:42:47 wiz Exp $
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.\"
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.\" Copyright (c) 1997 The NetBSD Foundation, Inc.
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.\" All rights reserved.
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.\"
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.\" This code is derived from software contributed to The NetBSD Foundation
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.\" by Gordon W. Ross.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the NetBSD
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.\" Foundation, Inc. and its contributors.
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.\" 4. Neither the name of The NetBSD Foundation nor the names of its
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.\" contributors may be used to endorse or promote products derived
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.\" from this software without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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.\" BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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.\" POSSIBILITY OF SUCH DAMAGE.
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.\"
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.Dd May 1, 2003
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.Dt ZSTTY 4
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.Os
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.Sh NAME
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.Nm zstty ,
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.Nm zsc ,
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.Nm zs
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.Nd
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.Tn Zilog
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8530 serial communications interface
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.Sh SYNOPSIS
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.Ss alpha
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.Cd "zsc0 at ioasic? offset 0x100000"
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.Cd "zsc1 at ioasic? offset 0x180000"
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.Cd "zstty* at zsc? channel ? # serial ports on B channels"
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.Cd "lkkbd0 at zsc1 channel ? # keyboard port on A channels"
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.Cd "vsms0 at zsc0 channel ? # mouse port on A channels"
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.Ss cesfic
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.Cd "zsc* at mainbus0"
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.Cd "zstty* at zsc? channel ?"
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.Ss mac68k and macppc
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.Cd "zsc0 at obio?"
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.Cd "zstty* at zsc? channel ?"
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.Ss mipsco
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.Cd "zsc0 at obio0 addr 0xbb000000"
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.Cd "zstty0 at zsc0 channel 0"
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.Cd "zstty1 at zsc0 channel 1"
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.Ss mvme68k
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.Cd "zsc* at pcc? ipl 4"
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.Cd "zsc* at pcctwo? ipl 4"
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.Cd "zstty* at zsc? channel ?"
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.Ss news68k
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.Cd "zsc0 at hb0 addr 0xe0d40000 ipl 5 vect 64 flags 0x0 # news1700"
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.Cd "zsc0 at hb1 addr 0xe1780000 ipl 5 vect 64 flags 0x1 # news1200"
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.Cd "zstty0 at zsc0 channel 0"
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.Cd "zstty1 at zsc0 channel 1"
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.Ss newsmips
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.Cd "zsc0 at hb0 addr 0xbfec0000 level 1 flags 0x0 # on-board"
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.Cd "zsc1 at hb0 addr 0xb8c40100 level 1 flags 0x1 # expansion board"
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.Cd "zsc2 at hb0 addr 0xb8c40104 level 1 flags 0x1"
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.Cd "zsc0 at ap?"
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.Cd "zstty0 at zsc0 channel 0"
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.Cd "zstty1 at zsc0 channel 1"
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.Cd "zstty2 at zsc1 channel 0"
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.Cd "zstty3 at zsc1 channel 1"
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.Cd "zstty4 at zsc2 channel 0"
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.Cd "zstty5 at zsc2 channel 1"
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.Ss next68k
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.Cd "zsc0 at intio? ipl 5"
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.Cd "#zsc1 at intio? ipl 5"
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.Cd "zstty0 at zsc0 channel 0 # ttya"
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.Cd "zstty1 at zsc0 channel 1 # ttyb"
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.Ss sgimips
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.Cd "zsc* at hpc0 offset ?"
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.Cd "zstty* at zsc? channel ?"
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.Ss sparc
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.Cd "zs0 at mainbus0 # sun4c"
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.Cd "zs0 at obio0 # sun4m"
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.Cd "zs0 at obio0 addr 0xf1000000 level 12 # sun4/200 and sun4/300"
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.Cd "zs0 at obio0 addr 0x01000000 level 12 # sun4/100"
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.Cd "zstty0 at zs0 channel 0 # ttya"
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.Cd "zstty1 at zs0 channel 1 # ttyb"
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.Cd "zs1 at mainbus0 # sun4c"
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.Cd "zs1 at obio0 # sun4m"
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.Cd "zs1 at obio0 addr 0xf0000000 level 12 # sun4/200 and sun4/300"
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.Cd "zs1 at obio0 addr 0x00000000 level 12 # sun4/100"
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.Cd "kbd0 at zs1 channel 0 # keyboard"
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.Cd "ms0 at zs1 channel 1 # mouse"
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.Cd "zs2 at obio0 addr 0xe0000000 level 12 # sun4/300"
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.Cd "zstty2 at zs2 channel 0 # ttyc"
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.Cd "zstty3 at zs2 channel 1 # ttyd"
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.Ss sun2
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.Cd "zs0 at obio0 addr 0x002000 # 2/120, 2/170"
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.Cd "zs1 at obmem0 addr 0x780000 # 2/120, 2/170"
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.Cd "zs0 at obio0 addr 0x7f2000 # 2/50"
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.Cd "zs1 at obio0 addr 0x7f1800 # 2/50"
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.Cd "zs2 at mbmem0 addr 0x080800 # 2/120, 2/170 (first sc SCSI)"
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.Cd "zs3 at mbmem0 addr 0x081000 # 2/120, 2/170 (first sc SCSI)"
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.Cd "zs4 at mbmem0 addr 0x084800 # 2/120, 2/170 (second sc SCSI)"
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.Cd "zs5 at mbmem0 addr 0x085000 # 2/120, 2/170 (second sc SCSI)"
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.Cd "zstty* at zs? channel ? # ttya"
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.Cd "kbd0 at zstty? # keyboard"
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.Cd "ms0 at zstty? # mouse"
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.Ss sun3
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.Cd "zstty0 at zsc1 channel 0 # ttya"
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.Cd "zstty1 at zsc1 channel 1 # ttyb"
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.Cd "kbd0 at zsc0 channel 0 # keyboard"
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.Cd "ms0 at zsc0 channel 1 # mouse"
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.Ss x68k
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.Cd "zsc0 at intio0 addr 0xe98000 intr 112"
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.Cd "zstty0 at zsc0 channel 0 # built-in RS-232C"
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.Cd "ms0 at zsc0 channel 1 # standard mouse"
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.Cd "#zsc1 at intio0 addr 0xeafc00 intr 113"
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.Cd "#zstty2 at zsc1 channel 0"
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.Cd "#zstty3 at zsc1 channel 1"
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.Cd "#zsc2 at intio0 addr 0xeafc10 intr 114"
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.Cd "#zstty4 at zsc2 channel 0"
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.Cd "#zstty5 at zsc2 channel 1"
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.Sh DESCRIPTION
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The
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.Nm
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driver provides
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.Tn TTY
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support for
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.Tn Zilog
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8530 Dual
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.Tn UART
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chips.
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.Pp
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Input and output for each line may set to any baud rate in the
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range 50 to 38400 (and higher on some machines).
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.Sh FILES
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.Bl -tag -width Pa
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.It Pa /dev/ttya
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.It Pa /dev/ttyb
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.El
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.Sh DIAGNOSTICS
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.Bl -tag -width indent
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.It zs0*: fifo overflow
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.br
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The on-chip
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.Dq FIFO
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has overflowed and incoming data has been lost.
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This generally means the machine is not responding to
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interrupts from the ZS chip fast enough, which can be
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remedied only by using a lower baud rate.
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.It zs0*: ring overflow
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.br
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The software input
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.Qq ring
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has overflowed.
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This usually means input flow-control is not configured correctly
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.Pq i.e. incorrect cable wiring .
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.El
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.Sh SEE ALSO
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.Xr kbd 4 ,
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.Xr ms 4 ,
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.Xr scc 4 ,
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.Xr tty 4
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.Sh HISTORY
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The
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.Nm
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driver was derived from the
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.Nm sparc
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.Nm zs
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driver supplied with
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.Bx 4.4
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.Ux .
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.Sh BUGS
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The old
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.Tn Zilog
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8530 chip has a very small FIFO (3 bytes?) and
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therefore has very strict latency requirements for the
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interrupt service routine.
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This limits the usable baud rates on many machines.
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