Intel 80286

From Misc Data Digs

Undocumented Instructions[edit | edit source]

LOADALL[edit | edit source]

Opcode 0F 05 loads all registers from Memory Address 0x000800h onward. Some BIOSes for later x86 PCs emulate this instructions.

Unknown 1[edit | edit source]

Opcode 0F 04 completely stops all CPU operations, requiring the computer to restart.