The Human Interface
Several devices may
act
as
the
"console",
or
primary
human,
or
system interface for
the
Boot
ROM. These devices
permit
input
and
output
functions between
the
person
and
the
computer
system. Possible console devices are:
Output Devices
Functional
output
devices
are
listed below.
•
HP
98642 (4-port, multiplexed RS-232)
card
with
the
remote
bit
set (with a
supported
HP
terminal).
Supported
HP
terminals
are
defined as those terminals
supported
by
HP
on
HP-UX
for
the
Series 300 computers. See
the
section
of
this
chapter
describing
Remote
Human
Interface for
Boot
ROM requirements.
•
HP
98626
card
with
the
remote bit set (with a
supported
HP
terminal).
•
HP
98644
card
with
the
remote
bit
set (with a
supported
HP
terminal).
• System Interface
Board
RS-232 controller (same as
HP
98644 card)
with
the
remote
bit
set (with a
supported
HP
terminal).
Only one
output
device
at
a
time
will
be
used as
the
console
output
device, however,
the
Boot
ROM will initialize
and
clear all
bit-mapped
video circuits on
the
video
boards
or
video cards in
the
accessory slots
that
it
finds, even if
that
video circuit is
not
chosen as
the
output
to
the
console device.
• A
bit
mapped
video
board
at
internal address 56000016.
This
includes
the
HP
98700
and
all of
the
video boards.
The
Boot
R01f
tries
to
talk
to
devices
with
a
primary
DIO
ID of
25
and
a secondary
DIO
ID of
1,
and
it
expects these devices
to
have
ID/FONT
ROM information.
• An
HP
98546 Compatibility Display Interface.
This
alpha/
graphics video
card
set is
similar
to
the
HP
98204B card. Note
that
the
Boot ROM will
turn
off video
to
this
card
set
just
before
booting
an
OS.
It
is
up
to
the
operating
systern
to
restore video if
this
card
set is
to
be
used.
•
HP
98627 Color
Card
Input Devices
Functional
input
devices are listed below.
• Rernote
HP
98(i42
card
with
supported
HP
terminal.
• Rernote
HP
98()26
card
with
supported
HP
terminal.
• Rernote
HP
98()44
card
with
supported
HP
terminal.
• Systeln Interface
Board
RS-232 controller (same as 98644 card)
with
the
remote
bit
set
(with a
supported
HP
terminal).! HP-HIL, keyboard,
and
HP-IB
electronics.
•
I/O
slot HP-HIL
or
keyboard electronics.
The
only version
of
this
hardware
is
the
key-
board
electronics in
the
HP
98700
and
98720 Display Controller.
Boot
R01f
Functions
127
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