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Direct I/O output

Direct I/O output

Direct I/O output

I'm trying to control a relay output card.  The programming instructions are not clear.

To turn on a relay, you need to write a byte to the base address (992 or 3E0 Hex).  How do I do this?

Their example is this:
        Base = &h3E0                'Base I/O Address
        Out Base,2                  'Turn on Ch 1
I can't find an "out" function.  Output, write, and Put seem to want to put the data into a file.

Print needs an object.

I'm using VB Version 4.0

RE: Direct I/O output

I found the solution in my old Dos version of Quickbasic.  They have a function called "Out", that writes directly to the address.  I can't find the equivalent in VB.

RE: Direct I/O output

You must use API like inpout.dll or portio.dll for do that in VB

RE: Direct I/O output

please tell me what is the equivalent of portio.dll in Win32.
i have found it for a long time.would you please help me!!thanks!!!

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