pico8-rtc.js

let pico8_gpio = Array(128);
(() => {
  let clock_start = Date.now();
  function update_clock(){
    let t = Date.now() - clock_start;
    for(let i = 0; i < 6; i++){
      pico8_gpio[i] = Math.floor(((t / 100) % Math.pow(256, i+1)) / Math.pow(256, i))
    }
    requestAnimationFrame(update_clock);
  }
  update_clock();
})();

zzz_readme.markdown

demo

clicky

usage

in your cart

peek(0x5f80)
peek(0x5f81)
# ... thru
peek(0x5f85)
# will have the values you crave

in your export

put

<script src="https://cdn.rawgit.com/codl/d134074e09da58aa70bb54e4b4015cb1/raw/0d99aeb20591ceed0b097644b161634c2e824f0a/pico8-rtc.js"></script>

in your html file

or download pico8-rtc.js above and put

<script src="pico8-rtc.js"></script>

in your html file