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44 lines
1.3 KiB
44 lines
1.3 KiB
/*++ BUILD Version: 0001 // Increment this if a change has global effects
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Copyright (c) 1990-1996 Microsoft Corporation
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Module Name:
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ntddvdm.h
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Abstract:
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This is the include file that defines all constants and types for
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accessing the NTVDM kernel mode virtual devices.
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Author:
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William Hsieh (williamh) 31-May-1996
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Revision History:
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--*/
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//
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// NtDeviceIoControlFile IoControlCode values for this device.
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//
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// Warning: Remember that the low two bits of the code specify how the
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// buffers are passed to the driver!
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//
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//
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#define IOCTL_VDM_BASE FILE_DEVICE_VDM
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//
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// 32 VDDs. Each VDD has possible 127 private ioctl code
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// These values are based on the fact that there are 12 bits reserved
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// for function id in each IOCTL code.
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//
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#define IOCTL_VDM_GROUP_MASK 0xF80
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#define IOCTL_VDM_GROUP_SIZE 127
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#define IOCTL_VDM_PARALLEL_GROUP 0
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#define IOCTL_VDM_PARALLEL_BASE IOCTL_VDM_BASE + IOCTL_VDM_PARALLEL_GROUP * IOCTL_VDM_GROUP_SIZE
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#define IOCTL_VDM_PAR_WRITE_DATA_PORT CTL_CODE(IOCTL_VDM_PARALLEL_BASE, 1, METHOD_BUFFERED, FILE_ANY_ACCESS)
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#define IOCTL_VDM_PAR_WRITE_CONTROL_PORT CTL_CODE(IOCTL_VDM_PARALLEL_BASE, 2, METHOD_BUFFERED, FILE_ANY_ACCESS)
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#define IOCTL_VDM_PAR_READ_STATUS_PORT CTL_CODE(IOCTL_VDM_PARALLEL_BASE, 3, METHOD_BUFFERED, FILE_ANY_ACCESS)
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