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Using another lower-level device driver (e.g. file system drivers using disk drivers) Simulating work with hardware, while doing something entirely different [9] For software: Allowing the operating system direct access to hardware resources; Implementing only primitives; Implementing an interface for non-driver software (e.g. TWAIN)
The other motivation for driver synthesis, is the large number of flavors of operating systems and device combinations. Each of these has its own set of input/output control and specifications which makes support of hardware devices on each of the operating systems difficult. So the ability to use a device with an operating system requires the ...
PCL 6 Standard: Equivalent to PCL 5e or PCL 5c, intended to provide backward compatibility. Font synthesis : Provides scalable fonts, font management and storage of forms and fonts. PCL 6 "Enhanced" architecture was altered to be more modular and to be more easily modified for future HP printers, that it prints complex graphics faster, that it ...
Install-able drivers can be packaged in various formats. PPD is a popular packaging format for drivers that accept Postscript data or PDF data as input. Due to dominance of select operating systems, the operating system–driver interface is more standardized than driver–printer interfaces.
daemon: Operating systems often start daemons at boot time and serve the function of responding to network requests, hardware activity, or other programs by performing some task. Daemons can also configure hardware (like udevd on some Linux systems), run scheduled tasks (like cron), and perform a variety of other tasks.
In embedded systems, a board support package (BSP) is the layer of software containing hardware-specific boot loaders, device drivers and other routines that allow a given embedded operating system, for example a real-time operating system (RTOS), to function in a given hardware environment (a motherboard), integrated with the embedded operating system.
Some "generic" GDI drivers such as pnm2ppa have been written; they aim to make GDI printers compatible with non-Windows operating systems such as FreeBSD, but they cannot support all printers. [11] In order to allow simpler creation of drivers for Winprinters, the Microsoft Universal Printer Driver was created. This allows printer vendors to ...
A hardware abstraction layer (HAL) is an abstraction layer, implemented in software, between the physical hardware of a computer and the software that runs on that computer. . Its function is to hide differences in hardware from most of the operating system kernel, so that most of the kernel-mode code does not need to be changed to run on systems with different hardwa