zs - Zilog 8530 (ZSCC) serial communications driver
zs* at sbus? slot ? offset ?
zstty* at zs? channel ?
zskbd* at zs? channel ?
wskbd* at zskbd? console ?
The zs is a Zilog 8530 serial interface chip used in SBusbased UltraSPARC
Sun workstations. The Zilog 8530 provides two input/output channels
per instance. Most Sun workstations include two of
One of the interfaces is usually hardwired for use
by the keyboard
and mouse attached to the workstation console. The
connect keyboard devices to the generic keyboard driver
wskbd. The remaining
additional zs interfaces provide RS-423 and RS-232
for general purpose use.
The zs driver supports all of the standard tty(4) ioctl
calls. The status
of the DTR, RTS, CTS, and DCD signals can be queried
command, but, due to limitations in the hardware, only the
DTR and RTS
signals can be modified with TIOCMSET, TIOCMBIC, and TIOCMBIS ioctl(2)
The zskbd driver supports a number of different key mappings. By default,
the layout corresponding to the keyboard model as
probed by the
zskbd driver will be used. A different layout can be chosen
the kernel options ``SUNKBD_LAYOUT'' (for type 4 keyboards)
``SUNKBD5_LAYOUT'' (for type 5 keyboards) at compile time or
utility wsconsctl(8) (variable: ``keyboard.encoding'' ) at
Other mappings can be used if the whole keymap is replaced
by means of
wsconsctl(8). The built-in mappings are at this time:
KB_BE ( ``be'' ) Belgium French (type 4 only).
KB_DE ( ``de'' ) German.
KB_DK ( ``dk'' ) Danish.
KB_ES ( ``es'' ) Spanish.
KB_FR ( ``fr'' ) French (type 5 only).
KB_IT ( ``it'' ) Italian.
KB_JP ( ``jp'' ) Japanese (type 5 only).
KB_NL ( ``nl'' ) Dutch.
KB_NO ( ``no'' ) Norwegian.
KB_PT ( ``pt'' ) Portuguese.
KB_SF ( ``sf'' ) Swiss French.
KB_SG ( ``sg'' ) Swiss German.
KB_SV ( ``sv'' ) Swedish with ``dead accents''.
KB_UK ( ``uk'' ) British.
KB_US ( ``us'' ) English / US keyboard mapping.
The KB_SV mapping can be used in the KB_NODEAD ( ``.nodead''
This switches off the ``dead accents''.
To set a German keyboard layout, use wsconsctl -w
To set it at kernel build time, add option
SUNKBD_LAYOUT="KB_DE" to the
kernel configuration file for a type 4 keyboard, or option
SUNKBD5_LAYOUT="KB_DE" for a type 5 keyboard.
ioctl(2), intro(4), sbus(4), tty(4), wskbd(4), wsconsctl(8)
The zs driver first appeared in 4.4BSD. Support for the TIOCM* ioctl(2)s
appeared in OpenBSD 2.3.
The zs driver now supports cua minor devices, but with this
in the simultaneous outgoing/incoming aspect of the
first outgoing connection succeeds, but second and subsequent connections
fail, apparently due to a getty hang. The hung getty apparently prevents
the cua device from being re-opened.
The kernel does not provide a keyboard layout for all manufactured Sun
OpenBSD 3.6 December 3, 2002
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