Glossary-4
MPC8240 Integrated Processor User’s Manual
Memory consistency. Refers to levels of memory with respect to a single
processor and system memory (for example, on-chip cache,
secondary cache, and system memory).
Memory-forced I/O controller interface access. These accesses are made
to memory space. They do not use the extensions to the memory
protocol described for I/O controller interface accesses, and they
bypass the page- and block-translation and protection mechanisms.
Memory management unit. The functional unit in the 603e that translates
the logical address bits to physical address bits.
Modified state. EMI state (M) in which one, and only one, caching device
has the valid data for that address. The data at this address in external
memory is not valid.
Out-of-order. An operation is said to be out-of-order when it is not
guaranteed to be required by the sequential execution model, such as
the execution of an instruction that follows another instruction that
may alter the instruction flow. For example, execution of instructions
in an unresolved branch is said to be out-of-order, as is the execution
of an instruction behind another instruction that may yet cause an
exception. The results of operations that are performed out-of-order
are not committed to architected resources until it can be ensured that
these results adhere to the in-order, or sequential execution model.
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Page. A 4-Kbyte area of memory, aligned on a 4-Kbyte boundary.
Park. The act of allowing a bus master to maintain mastership of the bus
without having to arbitrate.
Pipelining. A technique that breaks instruction execution into distinct steps
so that multiple steps can be performed at the same time.
Quiesce. To come to rest. The processor is said to quiesce when an exception
is taken or a sync instruction is executed. The instruction stream is
stopped at the decode stage and executing instructions are allowed to
complete to create a controlled context for instructions that may be
affected by out-of-order, parallel execution. See Context
synchronization.
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Summary of Contents for MPC8240
Page 1: ...MPC8240UM D Rev 1 1 2001 MPC8240 Integrated Processor User s Manual ...
Page 38: ...xviii MPC8240 Integrated Processor User s Manual TABLES Table Number Title Page Number ...
Page 48: ...xlviii MPC8240 Integrated Processor User s Manual Acronyms and Abbreviations ...
Page 312: ...6 94 MPC8240 Integrated Processor User s Manual ROM Flash Interface Operation ...
Page 348: ...7 36 MPC8240 Integrated Processor User s Manual PCI Host and Agent Modes ...
Page 372: ...8 24 MPC8240 Integrated Processor User s Manual DMA Register Descriptions ...
Page 394: ...9 22 MPC8240 Integrated Processor User s Manual I2O Interface ...
Page 412: ...10 18 MPC8240 Integrated Processor User s Manual Programming Guidelines ...
Page 454: ...12 14 MPC8240 Integrated Processor User s Manual Internal Arbitration ...
Page 466: ...13 12 MPC8240 Integrated Processor User s Manual Exception Latencies ...
Page 516: ...16 14 Watchpoint Trigger Applications ...
Page 538: ...B 16 MPC8240 Integrated Processor User s Manual Setting the Endian Mode of Operation ...
Page 546: ...C 8 MPC8240 Integrated Processor User s Manual ...
Page 640: ...INDEX Index 16 MPC8240 Integrated Processor User s Manual ...