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IKB-1 KEYBOARD
FUNCTIONAL DESCRIPTION
KEYBOARD FUNCTIONAL DESCRIPTION
The
IMSA
IIntelligent Keyboard
is
aunique, programmable keyboard designed
to
be used as a
parallel or serial computer input device. Anumber
of
keyboard functions
may
be programmed
by
the
user
through simple keyboard commands, or under
direct
control
of
the
system CPU.
KEYBOARD: The
IMSAI
Intelligent Keyboard utilizes ahigh quality, 63
key
mechanical
contact
keyboard
for
high
reliability.
All
keys
are
fully debounced, and
the
keyboard provides
full N-KEY
ROLLOVER.
Continuous depression
of
akey
will
invoke
an
auto
repeat
function,
causing a
character
to
be
output
continuously until the key
is
released
•.
Standard alphanumeric
.and control keys
are
arranged
in
a
typewriter
type layout.
SERIAL/PARALLEL
OPERATION: The keyboard
may
be configured
to
operate
as aparallel
OR serial input device. The parallel
mode
supports afull 8bit parallel
format
with
RDY
and
ACK handshaking. The serial
mode
supports both EIA and
TIL
levels. Serial baud
rates
are
selectable
by
keyboard commands and allow
for
the
selection
of
seven
separate
rates
from 110
-2400 baud.
ENCODED/UNENCODED MODES: User
or
system
CPU
programming allows the keyboard to
operate
in
encoded
or
unencoded modes. Selection
of
the encoded
mode
allows the keyboard
to
output
standard
USASCII
code, while
the
unencoded mode gives the
user
araw
map
of
the
keyboard array allowing multiple key depressions
to
be used
for
games, music,
etc.
KEY PROGRAMMING:
Arty
individual key
may
be reprogrammed
to
output
arty
given
ASCII
character.
UPPER/LOWER CASE: The keyboard
may
be programmed
to
operate
in
upper case
only
or
in
upper and lower
case.
CABINET: The cabinet is constructed
of
high
quality aluminum and
is
finished
in
an
IMSAI
System compatible blue. The cabinet houses the keyboard,
an
audible beep tone speaker and 3
L
ED
indicators. The L
ED
display indicates entry into the program mode, shift, and upper
case.
EXTERNAL CONNECTIONS: A
2S
pin
D-type connector provides
for
the
+5V
power and
computer
interface
connection.
Interface
lines
are
compatible with the
IMSAI
,1,110
and SIO
interface boards.
An
additional 1
Spin
D-type connector allows an external keypad to be used.
KEY
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