GXemul Code2

Implementing the i960 "mov reg,reg" instruction.

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

Ooops.

Applying most of NetBSD's patches for the gxemul package (all except two).

Include missing iomanip header.

Applying a patch from Andreas Gustafsson (gson) to set the SA_RESTART flag in the timer sigaction call.

More work on RISC-V: the first instruction (JAL / J) can be disassembled.

Adding a skeleton RISC-V CPU and RISC-V "virt" machine. Refactoring some parts of the new framework to deal better with variable length instructions during disassembly.

Use bold font rather than brackets around debug messages, when running from a terminal.

Implementing the ARM sbfx instruction.