ES-debugger : the flexible embedded system debugger based on JTAG technology

In the past the Embedded Software was used for controlling industrial apparatus but now is used in control systems for military, home appliances and automatic sensor systems and so on at present. Embedded systems are different from conventional computer system and this distinction makes it much difficult to debug as well as develop the embedded systems because of the lack of resources and sensitiveness in target system such as memory, power, timing constraint, etc. Especially huge integrated system like SoC (System-on-a-Chip)-that has memory, I/O port, etc.-has no space to locate debugging gadget so that the debugging of the embedded system is more difficult. To solve above problem, Boundary scan testing (also named JTAG) is appeared and we proposed the embedded system debugger based on JTAG technology in this paper