DOS device driver

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File Format
Name DOS device driver
Ontology
Extension(s) .dos, .sys

DOS device drivers (often simply known as SYS files) are stored in a simple binary format.

Drivers are loaded into a contiguous block of memory; the segment part of data structure pointers is then adjusted to match the loading segment.

Some device drivers are stored in the MZ format instead of the "raw" SYS format.

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