如何在Marie中修剪字符串末尾的空格?

我的print子例程在到达0字符(标记字符串的结尾)时停止打印。因此,为了修剪空白,我只需从最后一个字符的地址向后迭代,只要是空白,我就用0替换它。

//Remove spaces
LastCharAddr, HEX 0  
RemoveSpace, HEX  0
Space, DEC 32 //constant needed for subroutine
CharacterReplace, Hex 000 //constant for subroutine


StartRemoveSpace, LoadI LastCharAddr
                  Subt Space
                  Skipcond 400  //If its a space
                  JumpI RemoveSpace  //if not a space terminate
                  Load CharacterReplace  //replace with 0
                  Store LastCharAddr  //Replace
                  Load LastCharAddr
                  Subt One// iterate backwards
                  Store LastCharAddr
                  Jump StartRemoveSpace

任何帮助都将不胜感激谢谢!