Content Comparison

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• Microsoft comment characters '//' removed
• Defines to create a DLL or LIB from one source, code fixed  (_WIN_DLL, DOS_DRV, WIN_DRV)
• Definition abDriverVersion[16] changed to abDriverVersion[16+1]
• Several warnings when using 'Warning Level 4' removed
• NULL pointer test for user pointers removed
• DevOpenDriver():
  - memset length for structure tDriverInfo[] fixed
• DevReadSendData():
  - delivers the send I/O area even if the COM flag is not set.
• DevExchangeIOErr():
  - Missing assignment 'sRet=DRV_DEV_NO_COM_FLAG' after test of COM flag state included
• DevExchangeIO/Err/Ex():
  - I/O data will be copied, even if the COM flag is not available
  - Mode 4/5, function will wait until the device  has updated the receive data area. The maximum time is used from the user timeout or if 0, 100 ms.
    Normally the hardware respons time is less than 1 ms !
• DevPutMessage():
  - check of "(ptMessage->ln + 8) > sizeof (MSG_STRUC)" removed, because ptMessage->ln is a byte and holds a max. value of 255 + 8 = 263 the maximum message size.