This thesis is to define a subset of Java bytecodes that are suitable for instruction set extension as the basis of CPU executing Java bytecode directly.

• 数位电路的测试中，最被常使用到的测试技术之一是扫描测试技术。然而这项技术往往会面临到过长的测试时间及过大的测试资料量这两项最严重的问题。