
1-12 DS20E Reference Guide
Compaq Confidential – Need to Know Required
Writer: Robert Young Project: DS20E Reference Guide Comments:
Part Number: ER-K8F6W-UA .A01 File Name: b-ch1 System Overview.doc Last Saved On: 10/4/99 1:23 PM
SFM Switch Pack
The SFM switch pack is shown in Figure 1-5 at ➎, and again in Figure 1-6
below. The default position for the switches is on for RMC and off (open.
towards the words “Default all open”) for the other three switches.
(RMC) PIC Enable
Reserved for service
PIC SYSPWR Enable
Load PIC Defaults
PK1216e
1
2
3
4
DEFAULT ALL OPEN
1 2 3 4
ON
Figure 1-6. SFM Switches
# Function
➊
(RMC) PIC ENABLE
enables/disables the Remote Management Console (RMC). When this switch is on (closed— its default
position), the Remote Management Console (RMC) communicates with the device connected to the COM1
port. This switch redirects the system COM1 port’s transmit and receive serial lines to the SFM module. Note
that the hardware flow control lines are not passed to the SFM from the system board.
In the off (open) position, RMC is not enabled.
➋
Reserved for Service
➌
PIC SYSPWR ENABLE BYPASS
bypasses the control signal from the PIC that enables the system to operate. With this switch on (closed, not
in the default position), software cannot shut the system down. For example, with the switch on, the RMC
power-off command will not shut the system down.
Use this switch to prevent remote shutdown.
In the default position of off (open), the system can be shut down remotely, or by software.
➍
LOAD PIC DEFAULTS
when on (closed), forces the PIC to its default settings, acting like a reset or refresh to the PIC.
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