SYSTEM.INI's NetDMASize= Switch and NetBIOS (82790)
The information in this article applies to:
- Microsoft Windows 3.1
- Microsoft Windows 3.11
This article was previously published under Q82790 SUMMARY
Microsoft Windows operating system version 3.1's SYSTEM.INI switch
NetDMASize= specifies the DMA buffer size (in kilobytes) for NetBIOS
transport software if a network has been installed. The entry must
appear under the [386ENH] section of SYSTEM.INI:
NetDMASize=<kilobytes>
MORE INFORMATION
This entry affects only the behavior of 386 enhanced mode. Especially
on MCA machines, many network devices use DMA (Direct Memory Access).
On these machines, a larger DMA buffer is required only if the network
is loaded. This value will override the DMABufferSize entry if and
only if a NetBIOS network is loaded before starting Windows and the
size specified is larger than the size specified for DMABufferSize
(default DMABufferSize is 16K).
For Micro Channel Architecture (MCA) machines (IBM PS/2 or compatible), the
default NetDMASize is 32K. For non-MCA machines, the default value is 0
because most ISA (Industry Standard Architecture) network adapters do not
use DMA.
| Modification Type: | Major | Last Reviewed: | 10/14/2003 |
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| Keywords: | KB82790 |
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