Article: Q74655
Product(s): Microsoft Disk Operating System
Version(s): MS-DOS:5.0,5.0a,6.0,6.2,6.21,6.22
Operating System(s):
Keyword(s):
Last Modified: 22-NOV-1999
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The information in this article applies to:
- Microsoft MS-DOS operating system versions 5.0, 5.0a, 6.0, 6.2, 6.21, 6.22
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SYMPTOMS
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When you try to load HIMEM.SYS on a Tandy 1000 TX, you receive the following
error message:
VDISK Memory Allocator Already Installed: XMS Driver Not Installed.
CAUSE
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The Tandy 1000 TX, an 80286 machine, uses the high memory area (HMA) for video
memory. According to the Tandy Corporation, video memory is hard-wired to the
A20 line. As a result, HIMEM.SYS does not load.
Third-party XMS memory managers also encounter a similar message.
MORE INFORMATION
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The Tandy 1000 TX is manufactured by Tandy Corporation, a vendor independent of
Microsoft; we make no warranty, implied or otherwise, regarding this product's
performance or reliability.
Additional query words: 6.22 5.00 5.00a 6.00 6.20 3rdparty 1000TX
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Keywords :
Technology : kbMSDOSSearch kbMSDOS621 kbMSDOS622 kbMSDOS620 kbMSDOS600 kbMSDOS500 kbMSDOS500a
Version : MS-DOS:5.0,5.0a,6.0,6.2,6.21,6.22
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