Underlying the front-end parsers is a symbolic instruction set – a kind of portable assembly code – which can be translated to any of the supported machine architectures.
A program that translates microprograms in symbolic form (similar to assembly language) into bit patterns that are then loaded into the control store.
一种将符号形式(类似于汇编语言)的微程序翻译成位模式的程序，然后位模式被装入控制存储器。
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A program that translates from machine language to assembly language, often to decipher existing machine language programs by generating symbolic code listings.