NAME
	ReadPixelArray8 -- read the pen number value of a rectangular array
	of pixels starting at a specified x,y location and continuing
	through to another x,y location within a certain RastPort. (V36)

   SYNOPSIS
	count = ReadPixelArray8(rp,xstart,ystart,xstop,ystop,array,temprp)
	D0                      A0 D0:16  D1:16  D2:16 D3:16 A2    A1

     LONG ReadPixelArray8(struct  RastPort *, UWORD, UWORD, UWORD, UWORD,
	   UBYTE *, struct RastPort *);

   FUNCTION
	For each pixel in a rectangular region, combine the bits from each
	of the bit-planes used to describe a particular RastPort into the pen
	number selector which that bit combination normally forms for the
	system hardware selection of pixel color.

   INPUTS
	rp    -  pointer to a RastPort structure
	(xstart,ystart) - starting point in the RastPort
	(xstop,ystop)   - stopping point in the RastPort
	array - pointer to an array of UBYTEs from which to fetch the pixel data
	        allocate at least ((((width+15)>>4)<<4)*(ystop-ystart+1)) bytes.
	temprp - temporary rastport (copy of rp with Layer set == NULL,
	         temporary memory allocated for
	         temprp->BitMap with Rows set == 1,
	         temprp->BytesPerRow == (((width+15)>>4)<<1),
	         and temporary memory allocated for
	         temprp->BitMap->Planes[])

   RESULT
	For each pixel in the array:
	    Pen - (0..255) number at that position is returned
	count   - the number of pixels read.

   NOTE
	xstop must be >= xstart
	ystop must be >= ystart

   BUGS

   SEE ALSO
	ReadPixel()  ReadPixelLine8()  graphics/rastport.h