Technical Specifications
B–11
Table B–13: Motherboard Switch Settings
Configuration
Switches
Function
Description
1
2
Off
On
Off
On
Off
Off
On
On
Normal (Default)
Stop at SROM
prompt
Boot from floppy
Reset RTC and
NVRAM
The positions of switches 1 and 2 determine
whether the SROM code goes to the SROM
mini-console (for manufacturing use) or
passes control to the next stage of
initialization, the DROM code. The DROM
code uses switch 2 to determine whether an
image from a floppy disk or the flashROM
containing the console firmware should be
loaded into memory and started.
If switches 1 and 2 are both in the On
position at power-up, the RTC and NVRAM
are cleared. Return to normal operation by
powering off the system, placing switches 1
and 2 back to the Off position, and
powering on the system again. (See
Chapter 5, Troubleshooting, for details.)
FlashROM Protect
Switch
Function
Description
3
Off
On
Writes enabled
(Default)
Writes disabled
Switch 3 can be used to prevent writes to
the flashROMs. However, writes must be
enabled for proper system operation.
Reset Button
Function
Description
4
Off
On
Halt request
Reset (Default)
Switch 4 determines the function of the
front-panel reset push button.
