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Table 2-2. Options
Option
Modification
Drive Select
¢
(DSO)
Adds DSO input line to spare interface line so that system can
accommodate four disk drives. If J1-6 is designated as DSO,
cut etch between pads E and F, then add jumper between
pads E and G.
Write Protect to
This option indicates to the interface that a Write Protected
Interface Only
or Non-Write Protected diskette is installed in the disk drive;
it does not inhibit writing. Cut etch between pads C and D.
Write Inh ibit Contro lied
Cut etch between pads C and D, then add jumper from pad
by Interface Line
C to pad associated with spare interface line.
Independent Head
Add jumper between pads E and R. Modify program shunt
Load (Pin J 1-6)
module to select neither HM nor HS.
Motor On with
Cut etch between pads M and N; then add jumper between
Select
pads G and P.
Indicator Lamp
Cut etch between pads G and H; then add jumper between
with Motor On
pads Hand P.
Indicator Lamp
Cut etch between pads G and H; then add jumper from pad H
with Interface Only
to pad associated with selected spare interface line.
Select Disk Drive
Place program shunt module in HM position. (Load head
without Loading Head
only with Motor On signal.)
Note
Upon implementing any optional modification, verify that associated interface line is
properly terminated.
2-15
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