Force Computers SPARC CPU-54, Справочное руководство

Страница: 69 / 138

Front Panel of the SPARC/CPU-54 Controls, Indicators, and Connectors
3 - 4 SPARC/CPU-54
LEDs
The figure below shows the LEDs available on the SPARC/CPU-54.
Figure 9: Front Panel LEDs
Table 16: Description of Front Panel LEDs
LED Description
DIAG Software-programmable hexadecimal display for diagnostics
RN CPU status LED
Green: Normal operation
Red: Processor halted or reset is active; starts flashing at hung sig-
nal of SPARC/CPU-54
BM VMEbus busmaster and SYSFAIL LED
Green: If CPU board accesses VMEbus bus as master
Red: If SYSFAIL is asserted from Universerve II to VMEbus
Off: Otherwise
U0 and U1 Software-programmable user LEDs
Possible status: Off, red, yellow, or green; all colors are either per-
manently lit up or flash with a frequency of approximately 0.5, 1,
or 2 Hz
Ethernet 1, 3 Activity and link LEDs
Upper green LED:
On: Ethernet link is up
Off: Ethernet link is down
Lower orange LED:
Flashing: Ethernet link activity
Off: No link activity