Minimal Instruction Set Computer (MISC) 是一种采用极简指令集的处理器架构，其特点是拥有少量的基础操作和对应的指令编码。通常此类架构基于堆栈而非寄存器，以减少操作数指定符的大小。MISC架构因其简单的指令集、更快的指令解码单元和单条指令的快速执行而具有优势，但同时也会导致更多指令间的顺序依赖，从而降低指令级并行性。
转载：http://en.wikipedia.org/wiki/Minimal_instruction_set_computer
Minimal instruction set computer
Minimal Instruction Set Computer (MISC ) is a processor architecture with a very small number of basic operations and corresponding opcodes . Such instruction sets are commonly stack based rather than register based to reduce the size of operand specifiers. Such a stack machine architecture is inherently simpler since all instructions operate on the top most stack entries. A result of this is a smaller instruction set, a smaller and faster instruction decode unit, and overall faster operation of individual instructions. The downside is that instructions tend to have more sequential dependencies, reducing instruction-level parallelism . MISC architectures have much in common with the Forth programming language and the Java Virtual Machine .
- Complex instruction set computer (CISC)
- Reduced instruction set computer (RISC)
- One instruction set computer (OISC)
- Zero instruction set computer (ZISC)
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