Appeal No. 2002-1319 Page 12
Application No. 08/974,971
From this disclosure of DeRoo, we find that the protected
boot block size should start at the 1K memory boundary and finish
at the top of the memory boundary.
DeRoo further discloses (col. 92, lines 15-30) that the
protection of the critical information can be turned on or off,
by latching the value of pin 6 of HUI 700, to allow a system
designer to elect to use the present invention or not without
changing the design of the HUI 700 and preventing the software
control of this feature. DeRoo additionally discloses (col. 100,
lines 47-50) "means for programmably disabling said preventing
means, said disabling means including means for allowing reads
and writes to said protected address range in said memory
device." Similar language can be found in col. 101, lines 29-31;
col. 103, lines 1-3; and col. 104, lines 4-7 and 35-37. From
these disclosures of DeRoo, we find that the protection of the
protected address range may be disabled, allowing for writing to
the protected address.
Turning back to claim 23, we find that the HUI 700 of DeRoo
is configured to vary the size of the boot code section by
modifying the information indicating the size of the boot code
section; i.e., if the boot block range starts at the 1K memory
boundary, and the user selects an 8K boot block size from the
Page: Previous 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 Next
Last modified: November 3, 2007