2 System Board
Devices on the ISA Bus
System Board Switches
The first two of the system board switches set the frequency of the
The next five switches set the configuration for the PC Workstation, as summarized in the table below.
Switch | Switch Function | Default | |
|
|
|
|
1 | Open | Reserved - Do not use (always set to Open). | Open |
|
|
|
|
2 - 5 | - | Bus Frequencies (see the table on page 37). | - |
|
|
|
|
|
| Retain or clear the CMOS configuration stored in serial EEPROM: |
|
6 | Open | Do not clear CMOS. |
|
|
| Clear CMOS and reload default values in Setup. | Open |
| Closed |
| |
|
|
|
|
|
| Enable or disable User and System Administrator Passwords stored in |
|
|
| EEPROM: |
|
7 | Open | Enable passwords. |
|
|
| Disable /Clear User and Administrator passwords. | Open |
| Closed |
| |
|
|
|
|
|
| Keyboard |
|
8 | Open | Disable keyboard power on. |
|
| Closed | Enable keyboard power on. | Closed |
|
| ||
|
|
|
|
|
| Boot block: |
|
9 | Open | Idle. Normal operation |
|
|
|
| Open |
| Closed | Recovery boot active. Enable crisis recovery. | |
|
| ||
|
|
|
|
10 | Open | Reserved = do not use | Open |
|
|
|
|
48