The printer class installer calls SetupDi-prefixed device installation functions, which obtain information from printer INF files.įor a parallel-connected printer, the parallel enumerator creates a devnode with a unique hardware ID generated from the 1284 string it receives from the printer.Īn example 1284 string is: "MANUFACTURER:Hewlett-Packard COMMAND SET:PJL,MLC,PCL,POSTSCRIPT MODEL:HP Color LaserJet 550 CLASS:PRINTER COMMENT:HP LaserJet "įrom this 1284 string the parallel enumerator produces the following hardware ID: LPTENUM\Hewlett-PackardHP_Co3115 For each device found, the configuration manager calls the printer class installer. When a Windows 2000 or later system starts, the configuration manager calls the LPT enumerator to enumerate the IEEE 1284-compatible devices connected to LPT ports. The LPT enumerator is capable of obtaining identification information from LPT port hardware that conforms to the IEEE 1284 Extended Capabilities Port Protocol and ISA Interface Standard. ![]() The LPT enumerator is an example of a bus driver.
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