Parallel Programming #6
Blitz3D Forums/Blitz3D Beginners Area/Parallel Programming #6
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| Things change... soja... thanks for all the help! Of course the situation is no better (Murphy's Law -- an excuse to blame something!); the program runs but I still get is a 0 result. I REALLY appreciate the detail that you go into to explain things -- you definately get credit for all of your help. Here is where I am now... .DECLS FILE .lib "winio.dll" ;Initializes the WinIo library (boolean). Does not have to be used with Windows XP. InitializeWinIo%():"InitializeWinIo" ;Performs shutdown of the WinIo library. Must be called before terminiating an application or when no longer using the WinIo library. ShutdownWinIo():"ShutdownWinIo" ;Calls the WinIo driver (boolean). Parameters: (Points to a null-terminated string to specify the winio.sys driver path, Set to false). InstallWinIoDriver%(WinIoDriverPath$, IsDemandLoaded):"InstallWinIoDriver" ;Removes the WinIo driver (boolean). RemoveWinIoDriver%():"RemoveWinIoDriver" ;Reads a 1, 2, or 4 byte value from specifies I/O port (pointer). Parameters: (Input port $379, DWORD variable, BYTE = 1). GetPortVal%(PortAddr, PortVal*, Size):"GetPortVal" ;Writes a 1, 2, or 4 byte value to an I/O port (boolean). Parameters: (Output port $378, Hex value written to port, BYTE = 1). SetPortVal%(PortAddr, PortVal, Size):"SetPortVal" .BB PROGRAM ;The BlitzBASIC code for: ;Direct Port access from BlitzBASIC using WinIo. ;Set graphics mode. Graphics 800, 600, 16, 2 SetBuffer BackBuffer() ;Initializes the WinIo library. ;InitializeWinIo() ;Call the WinIo driver If Not InstallWinIoDriver(".\", False) Then Print "Initialization failed." End EndIf ;Create Custom Type. Type PortVal Field val End Type p.PortVal = New PortVal DebugLog p\val Repeat ;Read a 1 byte value from the specified port and place in variable p. GetPortVal($379, p, 1) ;Print variable p Print p\val Until KeyDown(1) ;Removes the WinIo driver. RemoveWinIoDriver() ;Shutsdown the WinIo library. ;ShutdownWinIo() End By the way... I noticed that you mentioned that you do not have a hardware device available to plug into your parallel port!? I thought ALL programmers had parallel PIO cards (homemade, of course) for experimentation!! Ha, Ha! All kidding aside... as you know by now I am not the type of individual that wants tasks completely done for me. Just point me in the right direction and I Plug & Chug -- challenges are fun! But there comes a time when more help may be necessary... I can easily lend you a PIO card and cable to use for testing. If you would like for me to mail the unit to you I would be glad to do so, just let me know. Thanks, again DES |
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