OPCODE is a B vector 1024 words long containing the names of available opcodes. All opcode names are five BCD characters long, right-justified in one machine word. The remaining high order six bits contain a code that may be used to classify the type of opcode. The file B/MANIF/OPTYPES contains manifests that describe the opcode types.
An opcode's name is found by indexing the OPCODE table by the ten bit opcode value.
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