MagTek MAGTEK - Manual (Page 7)

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SECTION 1. OVERVIEW
The MCP driver is a kernel-mode driver that provides reliable communications between a user-
mode application and an MCP device. It allows user-mode applications to access the features of
MCP devices in a uniform way despite the variety of connection interfaces that the devices use.
The driver includes a user-mode DLL that provides an easy-to-use interface for user mode
applications, simplifying application development.
The driver is a Windows Driver Model (WDM) kernel mode driver (.SYS). It operates under the
control of the Windows I/O manager and is configured as an Automatic Start driver. The driver
is loaded at boot time by the operating system. The driver accesses the controlled devices
through standard serial port support.