Video gamers know about cheat codes, but assembly language programmers are often in search of undocumented instructions. One way to find them is to map out all of a CPU’s opcodes and where there are ...

PHP, for all of its shortcomings, is still an extremely popular language and a useful one as well. One of the things that makes it so useful – its dynamic and interpreted nature – also makes it more ...

Rhel5.9 system on a bl460c g6. Upgraded firmware and then started installing patches. After patching was done, rebooted and got illegal opcode. Reinstalled grub, no dice. Just boots to illegal opcode ...