Casino slots

Why has nobody actually been able to crack these things yet? I imagine the supply chains are kept under tight security but you'd think some specs or a working unit would've leaked to the black market by now.

We know these things use a pseudo-RNG, possibly a dedicated hardware one, that's configured on-site for general settings like payout periods. A payout period is unlocked after a machine loses a set number of times to then become a fair game not guaranteed to lose. That way the house always wins. But the actual logic or math behind determining a payout period is still mostly unknown. We don't even know the exact nature of the software these run. Perhaps a completely custom firmware or maybe even an off-the-shelf spin of Windows Embedded or an embedded Linux distro or even something more like TRON or VxWorks. Has there been any case in history where one of these was ever reverse-engineered? If so I would move to read up on it