Avoid illegal memory reference (flagged by GNU sim)
Avoid illegal memory reference (flagged by GNU sim)

RGD2/swapforth,RGD2/swapforth,RGD2/swapforth,jamesbowman/swapforth,zuloloxi/swapforth,jamesbowman/swapforth,RGD2/swapforth,jamesbowman/swapforth,zuloloxi/swapforth,zuloloxi/swapforth,zuloloxi/swapforth,jamesbowman/swapforth