MPI 40 Series - Page 91

Table 6-2: Optional Configuration
MODIFIED OPERATION
PARAGRAPH
Drive Select Reconfiguration
. . . . . . . .
. . . .
. .
. .
6.2
Select Drive
without Loading Heads or
Enabling Stepper Motor.
6.3
Select
Drive and Enable Stepper Motor without
Loading
Heads .
6.4
Hard Sectored Diskette with
32/16/8 Sectors . . . . .
.
. .
•
6.5
FM Separated Data
and
Clock
.
. . . . . . . .
. . . . .
. . .
6.6
External Motor On
. . . . . . .
. .
.
. . . .
. . . . .
. .
.
6.7
Write Current Switch.
. . . . .
. . . . . . . .
. . . . .
. .
6.8
6.2 DRIVE SELECT RECONFIGURATION
In the standard configuration, the activation of DRIVE SELECT 1 will
load the read/write heads, enable the stepper motor, enable the output lines,
lock the door, and light the activity LED. Four separate DRIVE SELECT lines
are provided so that up to four drives may be connected to a single controller.
Jumpers Bll - Cll, B12 - Cl2, B13 - Cl3, and B14 - Cl4 correspond to DRIVE
SELECT 1, 2, 3, and 4, respectively. By placing only one of these jumpers in
each drive, only one drive will be selected when activating any one of the
DRIVE SELECT lines. Figure 6-3 illustrates this option.
814
DRIVE SELECT - 4 ---O·
813
DRIVE SELECT - 3 ~-
DRIVE SELECT - 2 ~
DRIVE SELECT -1 --=
8
:.:.
1
.:..j
1
-::t-0-:~--1
Figure 6-3:
6-3