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The M68HC12 addressing mode and instruction set improvements

机译:M68HC12寻址模式和指令集的改进

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摘要

The M68HC12 microcontroller has recently been announced as a migration path for users of the M68HC11. Although the M68HC12 retains many similarities to the M68HC11, in order to allow re-use of source code, there are some enhancements to the addressing modes and instruction set which are discussed in this article. The main performance improvements on the M68HC12 are attributable to the faster bus speed (8MHz to the M68HC11's 4MHz) and 16bit wide data paths (M68HC11 is an 8bit machine).
机译:最近宣布了M68HC12微控制器作为M68HC11用户的移植途径。尽管M68HC12保留了与M68HC11的许多相似之处,但是为了允许重用源代码,本文中讨论了对寻址模式和指令集的一些增强。 M68HC12的主要性能改进归因于更快的总线速度(8MHz至M68HC11的4MHz)和16位宽的数据路径(M68HC11是8位计算机)。

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