Debugging tips for vxWorks Bootrom images

This AppNote is intended for those people who need to get the vxWorks bootrom or bootrom_uncmp image working. The developer has made changes to config.h, sysLib.c, romInit.s and potentially some other files and things build just fine, but it doesn't execute as expected. Now what?
This document will describe the files utilized by the bootrom builds, the bootrom program flow, and some useful debugging techniques to achieve the desired bootrom.
To confirm that the bootrom code is getting programmed into the correct location in ROM we will briefly discuss the HEX file format.
Throughout this document the terms ROM and Flash will be used interchangeably.
It is assumed that the hardware has a serial output device, otherwise the vxWorks bootrom code would not be used.
This document will not explore the actual steps needed to program the Flash that contains the bootrom.