Versions of MASM Prior to 6.0 Do Not Support Flat Model

Last reviewed: January 23, 1995
Article ID: Q40572

The information in this article applies to:

Microsoft Macro Assembler for MS-DOS, versions 4.0, 5.0, and 5.1

The Microsoft Macro Assembler (MASM) versions 5.1 and earlier do not support programming in the flat model. They support only the small, medium, compact, and large memory models. The flat model was introduced in MASM version 6.0 to support OS/2 2.0.

The flat model is a memory model based on the Intel 80386 chip which supports full 32-bit addressing and segments greater than 64K. For more information on the flat model, consult the MASM 6.0 "Programmer's Guide" or Intel's "80386 Programmer's Reference Manual."

Additional reference words: kbinf 4.00 5.00 5.10
KBCategory: kbtool
KBSubCategory: MLIss

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Last reviewed: January 23, 1995
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