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MPC7400 RISC微处理器性能简介
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This document provides an overview of the MPC7400 microprocessor features, including a block diagram showing the major functional components. It provides information about how the MPC7400 implementation complies with the PowerPCª architecture deÞnition.
AltiVec and the MPC7400
The MPC7400 is the Þrst processor to implement the AltiVec instruction set architecture. The portions of
this document that describe the AltiVec technology are indicated by the icon in the margin. AltiVec features
are described in the following sections:
AltiVec registers are described in Table 3.
AltiVec instructions are described in Section 1.5.2, ÒAltiVec Instruction Set."
Execution units for AltiVec instructions are described in Section 1.2.2.4.1, "AltiVec Vector Permute
Unit (VPU)," and Section 1.2.2.4.2, ÒAltiVec Vector Arithmetic Logic Unit (VALU)."
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