Disk Subsystem (Mds-H) - NorthStar HORIZON Manual

DISK SUB-SYSTEM (MDS-H) PARTS LIST
(included in HORIZON-l and HORIZON-2)
1
1
1
1
4
1
1
1
1
2
5
5
3
1
1
disk drive, Shugart SA-400 (double density)
18" ribbon cable
12 1/2" power cable
power plug
powe r pI uq pins
5 volt regulator, 7805 or 34GT-5
12 volt regulator, 7812K or 340K-12
heat sink, Thermalloy 6030B
heat sink, Thermalloy 6016B
.047 ceramic disc capacitors
6-32x3/8" machine screws
#6 lock washers
6-32 nuts
blank diskette
HORIZON s~ftware diskette
DISK CONTROLLER PARTS
1
5
19
22
1
1
6
2
1
2
2
2
2
printed circuit board (5" x 10"), MDS-AD
20-pin IC sockets
16-pin IC sockets
14-pin IC sockets
34-pin cable connector header
crystal, 4MHz
IN4148 diodes
+5 volt regulators, 7805 or 340T-5
+12 volt regulator, 78L12
heat sinks, 61G7B-14
6-32x3/8" machine screws
#6 lock washers
6-32 nuts
Integrated Circuits
2
1
1
1
2
1
6
3
3
1
4
1
1
74LS00
74 LS0 2
74LS08
74LSll
74LS14
74LS32
74LS74
74LS109
74LS123
74LS138
74LS161
74LS164
74LS174
3
2
1
1
3
1
3
1
1
1
1
1
1
74LS241
74LS253
74LS257
74LS273
74LS393
7404
7438
74166 or 74LS166
OWE PROM (6301 or 82S129)
DSEL PROM (6301 or 82S129)
DPGM PROM (6309)
LF356
3080
North Star HORIZON Computer
12