Specifications
2.4.2 Keyboard -
J5
A
PC
(or
XT)
compatible keyboard
can
be
connected
to
the board's keyboard port via the
6-
pin connector, J5. Normally,
PC
keyboards include a cable which terminates in a male 5-pin
DIN
plug
for
connectiOU-to a PC. Table 2 10--gives-the--baartl's-keyboard
connector-pinour-
and
signal definitions,
and
includes corresponding
pin
numbers
of
a
normal
PC
DIN
key-
board
connector.
Note
"Ar
keyboards
are
not
compatible
with
PC
(or
XT)
keyboards,
and
may
not
be used with this interface.
Table 2-10. Keyboard Connector (J5)
J5
PIN
SIGNAL
NAME
DIN
PIN
1
Keyboard
Clock
1
2
Keyboard
Data
2
3
-Reset
3
4
GrCUlCl
4
5
+5V
power
5
6
(no
connection)
---
2.4.3 Parallel Printer Port -
J6
The parallel printer connector (J6) has a pinout that allows the use
of
flat ribbon cable to a
standard DB25
PC printer connector.
Table 2-11 gives the printer connector's pinout and signal defInitions.
The
table also indicates
the pin number
on
the
PC
compatible DB25 printer connector which corresponds
to
each
of
the
board
connector's pins. Note that the pin numbering convention for the board's header
connector differs from
that
of
DB25 connectors, even though direct connection with flat
ribbon
cable is possible.
To
clarify this,
each
signal's corresponding DB25 connector pin
number
has
been
included in the table.
Note
Be
sure
not
to exceed approximately 10 feet
of
total cable
length between the board's
connector
and
the printer.