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6.1.7
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.
Table 6-6 System Indicator Register
REG
System Indicator Register - 0xE2000002
BIT
7
FIELD
OPER
R
RESET
0
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.
MVME3100 Single Board Computer Installation and Use (6806800M28C)
6
5
4
R
R
R
0
0
0
3
2
1
R/W
R/W
R/W
0
0
0
Memory Maps
0
R/W
1
111
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