文档基于一个余从未见过的操作系统 RISC OS，但基本的东西如指令集是跨越厂商和平台的，汇编格式等差异应当不是大问题。余从中选译了指令集部分，没有选取依赖于特定硬件和工具的内容-I have never seen a document based on an operating system, RISC OS, but the basic things such as instruction set across vendors and platforms, the compilation o

ARM指令集，但是它和现在的asm语言有所不同，所以不能吧他划为asm中，但是上面没有这个分类-A instruction named ARM ,which would be used on RISC.this document contains a set of those instructions!

hreadx实时嵌入式操作系统源代码,ARM移植. threadx是一个很好的多任务实时嵌入式操作系统-ThreadX Library for ARM RISC microprocessor. ThreadX is a high performance RTOS that is wildly used in industrail world-wide.-hreadx real-time embedded operating system source code, ARM transplantat