CopyBits - Learn To Code - PlayBASIC Documentation

CopyBits

Result = CopyBits(SrcValue, BitCount, DestValue, BitPos)

Parameters:

    SrcValue = The source value
    BitCount = Number of bits that will be copied
    DestValue = The destination value
    BitPos = The bit position in DestValue

Returns:

Result

The CopyBits copies the number of bits given in BitCount from DestValue to the bit position specified in BitPos of DestValue.

FACTS:

* Use CopyBits to insert a number bits at a specified position.

Mini Tutorial:

Showing the use of the function CopyBits

; assign values to variables SrcValue and DestValue
  SrcValue=$11223344
  DestValue = $AABBCCDD

; Display the values in Hex format
  Print Hex$(SrcValue)
  Print Hex$(DestValue)

; Copy 8 bits of SrcValue to Dest value at bit 24
  Print Hex$(CopyBits(SrcValue, 8, DestValue, 24))

; Copy 16 bits of SrcValue to Dest value at bit 32
  Print Hex$(CopyBits(SrcValue, 16, DestValue, 32))

; Display the output and wait for key.
  Sync
  WaitKey

This example would output.

  $11223344
  $AABBCCDD
  $AA44CCDD
  $3344CCDD


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