3 ms·

And stack too IIRC.

• jacquesm 6y ago
  That's correct. The reason for this is that they foresaw using the CPU for multi-tasking with each application using it's own code, data, stack and zero page (scratch) data. That's also why it has relocatable code. A small multi-tasking OS called OS-9 was written and released for it: https://en.wikipedia.org/wiki/OS-9 https://en.wikipedia.org/wiki/OS-9