Tadpole SPARCbook 3 series, Reference Manual

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12-18
Microcontroller Subsystem
Command Set
12.2.8 Administration Commands
Opcode Command Arguments Returned Function
0x70 Set User Password length <password> ack The supplied user password is encrypted and stored
in EEPROM. The microcontroller fails attempts to
use this command if a password not been supplied
when required.
0x71 Verify User
Password length <password> ack + status The unencrypted user password is encrypted by the
microcontroller and verified against the version
held i n EEPROM. The status returned indicates
whether the supplied password does encrypt to the
same value as the stored version. A status value of
zero indicates a correct comparison.
0x72 Get System
Password Key none ack + <7 byte key> The microcontroller will return the value from the
RTC. It will also retain the values which are
returned for use in the Verify System Password
command.
0x73 Verify System
Password length <password> ack + status The microcontroller derives a system password,
using the unit serial number and system password
keys. This value is verified against the value passed
in. Where a successful comparison is achieved the
current RTC value is retained by the
microcontroller. The indication that the system
password is set expires 24 hours from the current
RTC value.
0x82 Power Off none none This command causes the microcontroller to power
down the system.
0x83 Power Restart period_msb
period_xx
period_lsb none The microcontroller configure the unit to cause an
automatic power-on after the specified number of
seconds has elapsed.
Table 12-7 Adminstration Commands
S3GX_TRMBook Page 18 Friday, September 19, 1997 11:39 am