Strange loop behavior: two copies of variable?

[HarlanRosenthal]

I've got some very strange behavior in very simple code.  Trying to read a hex number and translate it using successive multiplication, each hex digit seems to be added to an alternate copy of the accumulating variable.  The architecture is ARM, so I thought of register bank switching, but the generated code is using registers from 0 to 7.  Anyone ever see something like this before?

[Sten]

Have you checked the write_long()-routine? The behaviour could be explained if it only printed every second nibble.

[HarlanRosenthal]

Sten, my first reaction when I read your post was "I've gone over that already . . ."

  . . . and fortunately I went back over it again.  The typo was a *little* more subtle than that, but not much.  Thank you!

-Harlan