Chapter 1 Board Description and Memory Maps
MVME3100 Programmer’s Guide (V3100A/PG1)
11
System Indicator Register
The MVME3100 board provides a System Indicator register that may be read by the system software
to determine the state of the on-board status indicator LEDs or written to by system software to
illuminate the corresponding on-board LEDs.
BRD_FAIL
Board fail. This bit controls the board fail LED located on the front panel. A set condition illuminates
the front-panel LED and a cleared condition extinguishes the front-panel LED.
USR1_LED
User LED 1. This bit controls the USR1 LED located on the front panel. A set condition illuminates
the front-panel LED and a cleared condition extinguishes the front-panel LED.
USR2_LED
User LED 2. This bit controls the planar USR2 LED. A set condition illuminates the LED and a
cleared condition extinguishes the LED.
USR3_LED
User LED 3. This bit controls the planar USR3 LED. A set condition illuminates the LED and a
cleared condition extinguishes the LED.
RSVD
Reserved for future implementation.
Table 1-8. System Indicator Register
REG
System Indicator Register - 0xE2000002
BIT
7
6
5
4
3
2
1
0
FIELD
RSVD
RSVD
RSVD
RSVD
USR3
USR2
USR1
BRD_
F
A
IL
OPER
R
R
R
R
R/W
R/W
R/W
R/W
RESET
0
0
0
0
0
0
0
1