Jameco-electronics Rabbit 3000 Instrukcja Użytkownika Strona 291

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282 Rabbit 3000 Microprocessor
B.1.3 Revision-Level ID Register
Two read-only registers are provided to allow software to identify the Rabbit microproces-
sor and recognize the features and capabilities of the chip. Five bits in each of these regis-
ters are unique to each version of the chip. One register identifies the CPU (GCPU), and
the other register is reserved for revision identification (GREV). The CPU identification
(GCPU) of all revisions of the Rabbit 3000 microprocessor is the same. Rabbit 3000 revi-
sions are differentiated by the value in the GREV register.
Table B-5 summarizes the processor identification information for the different Rabbit
3000 versions.
Table B-5. Rabbit 3000 Revision Identification Information
Processor Revision
Package
Identifier
GCPU
[4:0]
GREV
[4:0]
Rabbit 3000 IL1T, IZ1T 00001 00000
Rabbit 3000A IL2T, IZ2T 00001 00001
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