VOLATILE Used in ATARI example. Protect against compiler optimizations for data that can be changed from outside causes.
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This method has no refinements
VOLATILE protect against compiler optimizations for data that can be changed from outside causes. Like in C, the "volatile" keyword indicates that a variable can be modified unexpectedly by external factors, and the compiler should not optimize or make assumptions about its behavior. It is often used for hardware registers, memory-mapped I/O, or shared variables accessed by multiple threads.
Only use found so far (July 2023) is in the Atari example
; Define fixed memory addresses
Unsafe!!! constant reference volatile byte! [
; Operating system software addresses
...
; Hardware addresses
...
]