LOOP Can Use ECX in 16-bit Segment, CX in 32-bit Segment

 Last reviewed: January 6, 1995
Article ID: Q26707
The information in this article applies to:
  • Microsoft Macro Assembler for MS-DOS, versions 5.0 and 5.1

You can use a cast override to change the operand size for the LOOP instruction. For example, use "LOOP dword ptr alabel", so that in a 16-bit segment, ECX will be used instead of CX. If you use a WORD override in a 32-bit segment, CX will be used instead of ECX.

Additional reference words: 5.00 5.10
KBCategory: kbprg
KBSubCategory: MASMLngIss

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Last reviewed: January 6, 1995
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