Syntax and grammar fixes.

PR:		docs/34913
Submitted by:	Ceri <setantae@submonkey.net>

en_US.ISO8859-1/books/developers-handbook/dma/chapter.sgml

@@ -137,7 +137,7 @@
 	which indicates that the counter has reached zero and no more data
 	will be transferred until the DMA controller is reprogrammed by the
 	CPU.  This event is also called the Terminal Count (TC). There is only
-	one EOP signal, and since only DMA channel can be active at any
+	one EOP signal, and since only one DMA channel can be active at any
 	instant, the DMA channel that is currently active must be the DMA
 	channel that just completed its task.</para>
 	  
@@ -155,7 +155,7 @@
 	  
       <para>It is important to understand that although the CPU always
 	releases the bus to the DMA when the DMA makes the request, this
-	action is invisible to both applications and the operating systems,
+	action is invisible to both applications and the operating system,
 	except for slight changes in the amount of time the processor takes to
 	execute instructions when the DMA is active. Subsequently, the
 	processor must poll the peripheral, poll the registers in the DMA
@@ -226,7 +226,7 @@
 	  
       <note>
 	<para>A new implementation of the 8237, called the 82374, allows 16
-	  bits of page register to be specified, allows access to the entire
+	  bits of page register to be specified and enables access to the entire
 	  32 bit address space, without the use of bounce buffers.</para>
       </note>
     </sect2>
@@ -372,7 +372,7 @@
 	      the peripheral requests transfers, they will be granted.  It is
 	      up to the CPU to move new data into the fixed buffer ahead of
 	      where the DMA is about to transfer it when doing output
-	      operations, and read new data out of the buffer behind where the
+	      operations, and to read new data out of the buffer behind where the
 	      DMA is writing when doing input operations.</para>
 		  
 	    <para>This technique is frequently used on audio devices that have