Microsoft KB Archive/26031

Most Significant Digits Go in DX ID Number: Q26031

5.00 MS-DOS docerr

Summary:

Page 315 of the “Microsoft Macro Assembler Programmer’s Guide” incorrectly states that when a 32-bit number is divided by a 16-bit number, the most significant digits of the dividend go in AX.

The most significant digits of the dividend go in DX, not AX.