Appeal No. 2002-1319 Page 11
Application No. 08/974,971
in hardware with either pull-up or pull-down resistors (not
shown) to provide any of the sizes shown in Table LXVIII. From
this disclosure of DeRoo, we find that sizes of the boot block
sector are configured in hardware using pull-up or pull-down
resistors.
DeRoo further discloses (col. 88, lines 1-5) that “[t]hus,
as described, the HUI 700 can be configured to emulate boot block
protection to enable memory device such as the common memory
device 704 which do not have built-in boot block protection
capability to be used for storage of the boot block protected
code non-volatile sector.” Although DeRoo discloses that memory
704 does not have built-in boot block protection, and that HUI
700 emulates boot block protection, we find from all of the
teachings of DeRoo provides boot block protection, irrespective
of whether it is emulated. Moreover, DeRoo discloses (col. 88,
lines 10-15) that the protected boot block range should start on
a 1 kilobyte memory boundary and finish at the top of the memory
as shown in figure 27. The size, as defined in Table LXVIII, and
therefore the starting address of the protected range, can be
determined from the hardware configuration register HUICFG_[0:7].
The remaining memory space is used for SCP (system control
processor) non-volatile areas and BIOS.
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