## ALP Programming Guide and Reference

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### ALP3505: Invalid mnemonic/operand combination

This message appears when a valid mnemonic has been recognized and all operand expressions have been correctly parsed, but the assembler was unable to combine the results into a form that it could associate with a valid instruction encoding.

Recovery: This usually indicates that one or more operand expressions were not correctly specified. Verify such factors as:

Correctly specified operand sizes

Register combinations allowable for this instruction

Labels or identifiers are of the correct type

Correct number of operands