Microsoft KB Archive/26802

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Illegal Instruction Segreg ID Number: Q26802

5.00 MS-DOS buglist5.00

Problem: MASM accepts the illegal instruction “MOV segreg,reg32” without giving a syntax error during assembly time. “Segreg” is any segment register and “reg32” is 32-bit register.

Response: This problem was fixed in MASM Version 5.00A. Please call Product Support and request an update to MASM Version 5.00A.