DOS device driver
From Just Solve the File Format Problem
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DOS device drivers (often simply known as '''SYS''' files) are stored in a simple binary format. | DOS device drivers (often simply known as '''SYS''' files) are stored in a simple binary format. | ||
The filename extension <code>DEV</code> is used by the [[FreeDOS]] printer driver tool <code>SPOOL</code>. | The filename extension <code>DEV</code> is used by the [[FreeDOS]] printer driver tool <code>SPOOL</code>. | ||
| − | For the block device driver of the compression software | + | For the block device driver of the compression software [[Stacker]], |
which was also included in some versions of the '''DR-DOS''' operating system or the '''Novell DOS''' and '''Caldera OpenDOS''' offshoots, | which was also included in some versions of the '''DR-DOS''' operating system or the '''Novell DOS''' and '''Caldera OpenDOS''' offshoots, | ||
the filename extension <code>BIN</code> is used. | the filename extension <code>BIN</code> is used. | ||
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* http://www.ibiblio.org/pub/micro/pc-stuff/freedos/files/repositories/latest/util/spool.zip → SPOOL.DEV | * http://www.ibiblio.org/pub/micro/pc-stuff/freedos/files/repositories/latest/util/spool.zip → SPOOL.DEV | ||
* https://www.uwe-sieber.de/files/cfg_echo.zip → echo.sys | * https://www.uwe-sieber.de/files/cfg_echo.zip → echo.sys | ||
| − | * | + | * https://ftp.zx.net.nz/pub/archive/novell/caldera_drdos/DR-DOS.703/images/disk02.144 → STACLOAD.BIN |
== Links == | == Links == | ||
Latest revision as of 19:46, 15 July 2025
DOS device drivers (often simply known as SYS files) are stored in a simple binary format.
The filename extension DEV is used by the FreeDOS printer driver tool SPOOL.
For the block device driver of the compression software Stacker,
which was also included in some versions of the DR-DOS operating system or the Novell DOS and Caldera OpenDOS offshoots,
the filename extension BIN is used.
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.
Contents |
[edit] Identification
Most DOS device drivers begin with the magic ID FF FF FF FF.
[edit] See also
[edit] Sample files
- http://www.ibiblio.org/pub/micro/pc-stuff/freedos/files/repositories/latest/util/spool.zip → SPOOL.DEV
- https://www.uwe-sieber.de/files/cfg_echo.zip → echo.sys
- https://ftp.zx.net.nz/pub/archive/novell/caldera_drdos/DR-DOS.703/images/disk02.144 → STACLOAD.BIN
