MC68020 Motorola, MC68020 Datasheet - Page 207

• Manufacturer Part Number: MC68020
• Description: (MC68020 / MC68EC020) MICROPROCESSORS USERS MANUAL
• Manufacturer: Motorola

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Abbreviations:
7-54
Busy
Null
Supervisory Check
Transfer Operation Word
Transfer from Instruction Stream
Evaluate and Transfer Effective Address
Evaluate Effective Address and Transfer Data
Write to Previously Evaluated Effective Address
Take Address and Transfer Data
Transfer to/from Top of Stack
Transfer Single Main Processor Register
Transfer Main Processor Control Register
Transfer Multiple Main Processor Registers
Transfer Multiple Coprocessor Registers
Transfer Status and ScanPC
Take Preinstruction, Midinstruction, or Postinstruction Exception
Use of this primitive with CA = 0 will cause protocol violation on conditional instructions.
EA—Effective Address
CP—Coprocessor
Other: Privilege Violation if S-Bit in the SR = 0
Protocol: If Length Field Is Odd (Zero Length Legal)
Protocol: If Used with Conditional Instruction
F-Line: If EA in Opword I s NOT Control Alterable
Protocol:
F-Line: Valid EA Field Does Not Match EA in Opword
Protocol: If Used with Conditional Instruction
Protocol: Length Field Other Than 1, 2, or 4
Protocol: Invalid Control Register Select Code
Protocol:
F-Line:
Protocol: If Used with Conditional Instruction
Other:
Exception Depends on Vector Supplies in Primitive
1. If Used with Conditional Instructions
2. Length I s Not 1, 2, or 4 and EA = Register Direct
3. If EA = Immediate and Length Odd and Greater Than 1
4. Attempt to Write to Unalterable Address
1. If Used with Conditional Instructions
2. Odd Length Value
1. EA Not Control Alterable or (An)+ for CP to Memory Transfer
2. EA Not Control Alterable or –(An) for Memory to CP Transfer
1. Trace—Trace Made Pending if MC68020/EC020 in “Trace on Change of
2. Address Error—If Odd Value Written to ScanPC
Even if Address Declared Legal in Primitive
Flow” Mode and DR = 1
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Table 7-6. Exceptions Related to Primitive Processing
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Primitive
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M68020 USER’S MANUAL
Protocol
X
X
X
X
X
X
X
X
X
F-Line
X
X
X
X
MOTOROLA
Other
X
X
X