MC68030FE33C Freescale Semiconductor, MC68030FE33C Datasheet - Page 433

• Manufacturer Part Number: MC68030FE33C
• Description: IC MPU 32BIT ENHANCED 132-CQFP
• Manufacturer: Freescale Semiconductor

Specifications of MC68030FE33C

• Processor Type: M680x0 32-Bit
• Speed: 33MHz
• Voltage: 5V
• Mounting Type: Surface Mount
• Package / Case: 132-CQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -

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10-46
10.4.10 Write to Previously Evaluated Effective Address Primitive
The write to previously evaluated effective address primitive transfers an
This primitive applies to general category instructions, If the coprocessor
the main processor initiates protocol violation exception processing. Figure
operand from the coprocessor to a previously evaluated effective address.
uses this primitive during the execution of a conditional category instruction,
primitive.
I cA I Pc I
10-30 shows the format of the write to previously evaluated effective address
This primitive uses the CA and PC bits as previously described.
to an effective address specified by a temporary register within the MC68030.
fective address, this temporary register contains the evaluated effective ad-
the effective address specified in the instruction operation word has not been
to in response to this primitive is undefined.
The MC68030 transfers operands between zero and 255 bytes in length.
When the main processor receives this primitive during the execution of a
general category instruction, it transfers an operand from the operand CIR
When a previous primitive for the current instruction has evaluated the ef-
dress. Primitives that store an evaluated effective address in a temporary
evaluate effective address and transfer data, and transfer multiple coproces-
sor registers primitive. If this primitive is used during an instruction in which
calculated, the effective address used for the write is undefined. Also, if the
The function code value during the write operation indicates either supervisor
Bits [0-7] of the primitive format specify the length of the operand in bytes.
register of the main processor are the evaluate and transfer effective address,
previously evaluated effective address was register direct, the address written
or user data space, depending on the value of the S bit in the MC68030 status
register when the processor reads this primitive. While a coprocessor should
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14
Figure 10-30. Write to Previously Evaluated Effective
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11
MC68030 USER'S MANUAL
Address Primitive Format
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