Explanation, please!

[Doug Gwyn]

In article <2945 at wright.mips.COM> earl at mips.COM (Earl Killian) writes:
>According to the author, that code was used for copying to a 16-bit IO
>device.  It would have be illegal to use memcpy or bcopy because they
>would make word references to the device.

Wrong reason.  memcpy() etc. don't have the right behavior for stashing
a sequence of values into the same destination location.