Compaq AlphaServer DS20 Service Manual page 89

Table 3-9 Function Register
Name Bits
Reserved <7>
PS1_OK_L <6>
PS0_OK_L <5>
FANTRAY_FAIL_H <4>
CPUFANS_OK <3>
Reserved <2>
SYSFAN_OK <1>
TEMP_OK <0>
Initial
Type State Description
RO 0 Reserved
RO X When set, indicates that power
supply 1 is functioning properly.
RO X When set, indicates that power
supply 0 is functioning properly.
RO X When clear, indicates that the
fantray, if present is functioning
properly.
RO X When set, indicates that the fans on
CPU heatsinks are functioning
properly.
RO 0 Reserved
RO X When set, indicates that the system
fans are functioning properly.
RO X When set, indicates that the
temperature inside the system
enclosure is below the temperature
limit.
Error Registers 3-19