If the Operation-Extender entry (position 53) is H, then the operation code must be ADD, DIV, MULT, SQRT, SUB, XFOOT, Z-ADD, or Z-SUB. If the Operation-Extender entry is N, then the operation code must be CHAIN, READ, READE, READP, or REDPE. If the Operation-Extender entry is P, then the operation code must be CAT, XLATE, SUBST, MOVE, MOVEL, or MOVEA.
Specify the desired entry for the Operation-Extender entry (position 53). Compile again.
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