Specifications
TABLE
VIII
QUARK
PERIPHERAL
CONNECTIONS
-------
.-~-----
TABLE
VIlla
FULL-DUPlEX
PORT
CONNECTIONS
DB-25S
PIN
DB-25S
PIN
(MODEM)
(TERMINAL)
FUNCTION
QUARK
PIN
REMARKS
------
1 1
PROT
GND
(Opt)
Chassis
ground
2 3
Tx
DATA
A-3
Twist with
ground
wire
3 2
Rx
DATA
C-2
Twist
with
ground
wire
4
5
RTS
B-3
5
4
CTS
C-4
6
20
DSR
B-4
7
7
GROUND
A-5
Ground
20
6
DTR
C-3
----
Notes:
1.
The
pin
numbers
in the
column
labelled
"MODEM"
represent the pinouts for connecting
to
industry-standard
modems
using a
DB-25S
connector.
2.
The
pin
rumbers
in the
column
labelled
"TERMINAL"
represent the pinouts for connecting
to
a standard
computer
terminal with
an
RS-232C
serial
interface using a
DB-25S
connector.
Use
these pinouts for connecting
an
external terminal to
be
used
as the
Console
device.
3.
If
a
serial
printer
is to
be
connected
on
the Full-Duplex
Serial
Port,
the
DB-25S
pinout
given
in
the
column
labelled
''TERMINAL''
shouLd
be
used.
,---------
TABLE
Vlllb
PARALLEL
PRINTER
INTERFACE
CONNECTIONS
PRINTER
PIN
FUNCTION
QUARK
PIN
REMARKS
1
DATA
STROBE
C-13
Data
strobe,
AcknowLedge,
2
BIT
0 (lSB)
A-12
and
Bits 0-7
may
each
be
3
BIT
1
C-12
twisted with
ground
wires
4
BIT
2
A-11
5
BIT
3
C-10
6
BIT
4
C-9
7
BIT
5
A-10
8
BIT
6
C-11
9
BIT
7
(MSB)
A-9
10
ACKNOWLEDGE
B-13
19-29
GROUND
A-13
,
______
r,_.r
••
Notes:
1.
Printer pin
rumbers
shown
for the
Parallel
Printer
connections are the pin
numbers
for a
Centronics
739
printer
connector.
.r
_ •
___________
_
TABLE
Vlllc
5-1/4-INCH
FLOPPY
DISK
DRIVE
CONNECTIONS
EDGE
CONNECTOR
FUNCTION
QUARK
PIN
REMARKS
----,--------------------------------------.-------
1
2
3
4
5
6
7
8
9
GROUND
OPT
GROUND
BUSY
GROUND
SEL
3
GROUND
INDEX
GROUND
B-18
A-20
A-29
Read
Data,
Write
Data, Index,
and
Step
may
each
be
twisted
with
ground
wires.
Megatel
Computer
Technologies Toronto,
Canada
Appendix
Page
A-12