I have encountered one of the rare instances where I need/want more debugging resources than an LED on an IO port.
I am looking for some recommendations as well as understanding of the lighter weight debugging tools that are available. I am dealing with a Xilinx V4 PPC405 FPGA. It is hosted in a computer running Windows XP. Aparently there is a JTAG port on the device that emulates a JTAG parallel port on LPT3 on the host side. I was hoping to be able to bring up gdb, download an elf file to the target and step through a program to see where it is going off the rails. A bit of research suggests that there are gdbservers that bridge between gdb and JTAG. But all the links I have found to rproxy seem to be broken, and those for gdbproxy seem to be for other processors.