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3.3 Password Bypass Jumper (CF3)
AlphaBIOS provides password protection. However, Password Bypass is provided
for system setup or startup when the AlphaBIOS password is unavailable.
Password Bypass is enabled by inserting jumper CF3 in the J27 System
Configuration Jumper Block. This disables the AlphaBIOS password verification
and enables the user to set up or start up their system without the AlphaBIOS
password. Password Bypass also clears the password.
3.4 Boot Option Jumper (CF7)
The boot option jumper is located at J27–23/24 (CF7). The default position for this
jumper is out (Figure 3–1). This jumper selects the image to be loaded into memory
from the system flash ROM. With the jumper out, the AlphaBIOS Console firmware
is loaded. With the jumper in, the fail-safe booter is loaded. For more information
about the fail-safe booter, refer to Section 8.5.
3.5 Flash ROM Update Jumper (J28)
When J28–2/3 are jumpered together (default), the flash ROM is write-enabled.
When J28–1/2 are jumpered together, the flash ROM is write-protected.
Password Bypass Jumper (CF3)
AlphaPC 164LX Jumper Configuration
3–3
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