SUB / Function Lock

[britlion]

I think we need some word in the definition for subs and functions that makes -O2/3 NOT optimize something out of the loop because it doesn't seem to be called - but needs to be kept in, perhaps because it contains asm code that we need to keep.

REQUIRED SUB Name()
REQUIRED FUNCTION a(b as uInteger) as uinteger

or some such?

This then culminates in interesting stuff like

REQUIRED SUB initialize () AS INTERRUPT
<code>
END SUB