Appeal No. 1999-2614
Application No. 08/667,826
The claimed invention relates to a graphics controller
circuit which includes a register file with a plurality of
registers. Commands addressed to virtual registers are accepted
by the graphics controller, and a plurality of instructions are
generated including instructions to access one of the registers
in the register file. According to Appellants (specification,
page 6), by having commands which are directed to virtual
registers and generating multiple instructions in response
thereto, the graphics controller permits an access command to be
combined into one command on the system bus, thereby minimizing
the amount of data transferred over the system bus.
Claim 1 is illustrative of the invention and reads as
follows:
1. A graphics controller circuit for use in a computer
system, the computer system comprising a bus and a host, the
host being coupled to the bus, comprising:
a host interface for receiving a single command on the
bus from the host, and generating a plurality of
instructions in response to the command, at least one of the
plurality of instructions comprising a set register
instruction, and at least another of the plurality of
instructions being an execute instruction; and
an execution circuit, coupled to the host interface,
for executing the plurality of instructions to execute the
command.
2
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