User`s guide

User Commands 4–161
User Commands
wbcfg
wbcfg
The wbcfg command writes to the backup cache configuration register.
Format
wbcfg bcfg_data [bctl_data]
Parameters
bcfg_data
Specifies the new backup cache configuration register value.
bctl_data
Specifies the new backup cache control register value. If not supplied, the current
value remains unchanged.
Description
The wbcfg command writes to the backup cache configuration register and the
backup cache control register in the same command. If you are making a change to
the configuration register that requires a change to the control register, specify both
values in a single write to prevent the CPU from being in an inconsistent state. If the
change you are making to the backup cache configuration register does not require a
change to the control register, the second parameter is optional. The memory
controller registers are automatically changed to reflect the new state of the backup
cache.
This command is implemented only for the Alpha 21164 microprocessor family.
Example
EB164> wbcfg 1e22772 28051
Old BC_CTL = 0x00008051 & BC_CFG = 0x01E21772
New BC_CTL = 0x00028051 & BC_CFG = 0x01E22772
CIA_CACK_EN = 0x8 & CIA_MCR = 0x0001FE21