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Graphics Interchange Format  |  1996-01-18  |  129.6 KB  |  542x546  |  8-bit (124 colors)
   ocr: Environment Subsystem VO Calls Status and/or Data USER MODE 1O Service Request KERNEL MODE NT System Services NT V/O Manager Send! IRP Create. IRP Layer Device Driver 1 Call Next Driver Send IRP Layer Device Driver: 2 Call Next Driver Send IRP Layer Device Driver: N Dispose IRP Retum Status/Data Access Hardware NT Hardware-abstraction Layer Physical Device Figure 2: NTVO architecture.