What are "half words"?

[Casimira]

I'm learning to code on the Nintendo DS (I know, I'm coming in late on the nds bandwagon). I'm looking into the libraries written for devkitpro for Direct Memory Access (DMA) and I stumbled on the term "half words" in this context:

"dmaCopy (const void *source, void *dest, uint32 size)
copies from source to destination using channel 3 of DMA available channels in half words "

[WinterMute]

Halfwords in ARM terminology are 16bit values, a word is 32bit.

Wikipedia has a reasonably accurate article on the subject of words - http://en.wikipedia.org/wiki/Word_%28co ... tecture%29