GXemul Code2

Adding a section to the documentation about how to use the emulator as a debugger (breakpoints, unassembling, single-stepping, inspecting registers, and so on).

Minor update regarding the new framework.

Moving new framework stuff to the end of the index.

Minor update; moving old framework before new framework in the SYNOPSIS part.

i960 experiments...

Fix URL.

Minor TODO updates.

Implementing the i960 "mov reg,reg" instruction.

Adding 512 KB ROM at 0xfff80000 in the HP 700/RX machine.

Ooops.