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NAME    [Toc]    [Back]

     ite - HP Internal Terminal Emulator

SYNOPSIS    [Toc]    [Back]

     ite* at grf?

DESCRIPTION    [Toc]    [Back]

     TTY special files of the form /dev/ttye?  are interfaces  to
the HP ITE
     for bit-mapped displays as implemented under OpenBSD. An ITE
is the main
     system console on most HP300 workstations and is the  mechanism through
     which  a  user  communicates with the machine.  If more than
one display exists
 on a system, any or all can be used as  ITEs  with  the
limitation that
     only  the  first one opened will have a keyboard (since only
one keyboard
     is supported).

     ITE devices use the HP-UX `300h' termcap(5)  or  terminfo(5)
entries.  However,
 as currently implemented, the ITE does not support the
full range
     of HP-UX capabilities for this device.  Missing are multiple
colors, underlining,
  blinking, softkeys, programmable tabs, scrolling
memory and
     keyboard arrow keys.  The keyboard does not have any of  the
     character  support of HP's NLS system.  It does use the left
and right
     extend char keys as meta keys,  in  that  it  will  set  the
eighth bit of the
     character code.

     Upon  booting,  the kernel will first look for an ITE device
to use as the
     system console (/dev/console).  If a display exists  at  any
hardware address,
 it will be the console.

     When activated as an ITE (special file opened), all displays
go through a
     standard  initialization  sequence.   The  frame  buffer  is
cleared, the ROM
     fonts  are unpacked and loaded into off-screen storage and a
cursor appears.
  The ITE initialization routine also  sets  the  colormap entry used
     to  white.  Variable colors are not used, mainly for reasons
of simplicity.
  The font pixels are all set to 0xff  and  the  colormap
entry corresponding
  to  all  planes  is set to R=255, G=255 and B=255.
The actual number
 of planes used to display the characters depends on  the
hardware installed.
  Finally, if the keyboard HIL device is not already
assigned to
     another ITE device, it is placed in ``cooked'' mode and  assigned to this

     On   most  systems,  a  display  is  used  both  as  an  ITE
(/dev/ttye?  aka
     /dev/console) and as a graphics device (/dev/grf?).  In this
     there  is  some interaction between the two uses that should
be noted.  For
     example, opening /dev/grf0 will deactivate the ITE, that is,
write over
     whatever  may  be on the ITE display.  When the graphics application is
     finished and /dev/grf0 closed, the ITE will be reinitialized
with the
     frame buffer cleared and the ITE colormap installed.

SEE ALSO    [Toc]    [Back]

     cons(4),  dvbox(4),  gbox(4),  grf(4), hil(4), hyper(4), intro(4), rbox(4),

OpenBSD      3.6                           June      9,      1993
[ Back ]
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