;In my program code file: After beening assembled, there are many surprising errors. The detail error are shown as follow. mov r8, #3F7Bh; The error message is "error a6: SYNTAX ERROR" addc r9, #0Fh; The error message is "OPERAND TYPE MISMATCH" I have identified the codes of above instructions are right. Furtherly, these errors did not appear in every code file. I am stopped by the puzzle. My software condition: KEIL uVsion2 for C166 Processor: C167CR-LM