Phytec eGrabber-4plus, Руководство по оборудованию

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Driver Software

PHYTEC Meßtechnik GmbH 2004 L-608e_4
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5.2.1.1 Installation of the VxD-Driver (Windows ’95)
The VxD-driver has the purpose to allocate a continuous memory
region, which will be the memory for the image. Since the eGrabber-
4plus stores the data per DMA-access, it is required, that this physical
fixed area has continuous addresses in a sequence.
The reservation of this memory region can only be achieved for
Windows’95 with VxD.
By the VxD, the linear memory addresses are converted to physical
memory addresses.
The VxD-driver is not called directly by the user program. The access
will be executed via the DLL.
You might use the installation CD to deliver the Window’s 95 driver
with your own application.
The path on the CD is :
PCIGRAB4/DRIVER/WIN95_98.
You can copy these files onto a disk and distribute them with your
application. Alternatively you can create your own installation routine.
To do this, the following points must be processed:
The VxD-driver must be introduced to the Windows’95-system as
static device-driver . This will be established in the following way:
l
First the file
P
CIGRAB
4.
VXD
must be copied to the Windows-
system directory.
l
In the next step the driver will be included in the registry-table :
Please use the program
R
EGEDIT
in the
W
INDOWS
95
- directory.
Please step through the registry key tree until you reach VxD
(see Figure 44).