Count in octal: Difference between revisions

The octal number is stored and manipulated as a string, meaning that even with only 1k of RAM the program shouldn't stop until the number gets to a couple of hundred digits long. I have <i>not</i> left it running long enough to find out exactly when it does run out of memory. The <code>SCROLL</code> statement is necessary: the ZX81 halts when the screen is full unless it is positively told to scroll up instead.