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Hardware Preparation and Installation
Configuration Switch S1: General Purpose Functions (S1-1 to S1-8)
2
The eight General Purpose Input lines (GPI0-GPI7) on the MVME197DP/SP
may be configured with selectable switch segments S1-1 through S1-8. These
switches can be read as a register (at $FFF40088) in the VMEchip2 LCSR. Refer
to the VMEchip2 chapter in the MVME197LE, MVME197DP, and MVME197SP
Single Board Computers Programmer's Reference Guide for the status of lines GPI0
through GPI7. Factory configuration is with the general purposes input lines
disabled (open).
S1-1 to S1-8: OFF -- All Ones (FACTORY CONFIGURATION)
Configuration Switch S1: System Controller Enable Function (S1-9)
The MVME197DP/SP can be the system controller. The system controller
function is enabled or disabled by configuring selectable switch segment
S1-9. When the MVME197DP/SP is the system controller, the SCON LED
is turned ON. The VMEchip2 may be configured as a system controller as
illustrated below. Factory configuration is with the system controller
switch enabled (closed).
2-4
Switch S1
1
2
3
O
O
N
N
Switch S1
1
2
3
O
O
N
N
S1-9: ON -- MVME197 IS the System Controller
(FACTORY CONFIGURATION)
Switch S1
1
2
3
O
N
S1-9: OFF -- MVME197 IS NOT the System Controller
4
5
6
7
8
9
4
5
6
7
8
9
4
5
6
7
8
9
CLOSED
OPEN
CLOSED
OPEN
CLOSED
OPEN
User's Manual
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