The software for using the HSI-24 on a window NT machine is comprised of two files:
'hsidriver.sys' - this is the device driver for the HSI-24
'hsicomnt.dll' - this provides an Application Program Interface to the HSI-24
In addition the HSI-24 firmware file 'pca10c.bin' is required.
The driver file must be 'installed'. Although manual installation is not difficult,
knowledge of the MS registry is required. An installation utility is provided which
automates the procedure.
After installing the driver copy the hsicomnt.dll file to the \winnt\system32 directory.
You will also want to put the HSI-24 firmware file, pca10c.bin, in a subdirectory where
your application can locate it.

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     NOTE
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Unzip all files to a temp subdir.
Rename hsidri~.sys to hsidriver.sys

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TO INSTALL DRIVER
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Run 'insthsi install'.

For your information, this should do the following:
Copy hsidriver.sys to \winnt\system32\drivers\hsidriver.sys.
The following additions to the registry are also made:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\hsidriver
                                                     ErrorControl: REG_DWORD: 0x1
                                                     Start:        REG_DWORD: 0x2
                                                     Type:         REG_DWORD: 0x1
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\hsidriver\Parameters\Device0
                                                     PORT:         REG_DWORD: 0x310
                                                     SPAN:         REG_DWORD: 0x4

The insthsi program tries to open the device just to see if it will open, and then closes it.
The method used to install the driver should not require that you reboot the machine.

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To remove driver:
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Run 'insthsi remove'.
This will stop the driver and remove it from the list of services. 
However it does not delete the hsidriver.sys file nor does it remove the hsidriver
service key from the registry.

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Use is very nearly the same as the hsicom32.dll. The DLL here is named HsiComNT.dll.
The file modhsisr.bas is a fragment of a vb app that declares all of the DLL functions.
The only change here is the name of the DLL in all the declare statements.
the 'hsidriver.sys' in the temp subdir can be deleted after installation, the install program
copied it to a system dir. The insthsi.exe can also be deleted.


dick