MC68030 Datasheet, PDF (389/602 Pages) Motorola, Inc – ENHANCED 32-BIT MICROPROCESSOR

Coprocessor Interface Description
10.3.1 Response CIR
The coprocessor uses the 16-bit response CIR to communicate all service requests
(coprocessor response primitives) to the main processor. The main processor reads the
response CIR to receive the coprocessor response primitives during the execution of
instructions in the general and conditional instruction categories. The offset from the base
address of the CIR set for the response CIR is $00. Refer to 10.4 Coprocessor Response
Primitives.
MOTOROLA
MC68030 USER’S MANUAL
10-29