After 2 people reported that PxScan does not work with the PX-755, i ordered one in order to find out what’s going on. After bushounding for 10 minutes, I can confirm that it does not work, and I can give a simple reason:
The commands are still the same, but those commands now require authorization. I will refer to those commands as ‘authorized commands’ from now on.
In order to execute authorized commands, you first have to query a code from the drive, which is 16 bytes, then you have to calculate a result from those 16 bytes, send the result back, and turn the drive into authorized-mode. Once the drive is in authorized mode, commands like Q-Check commands, enabling/disabling varirec/gigarec/bitsetting work. After performing such an action, PlexTools automatically sets the drive back to non-authorized mode.
The really funny thing is that the bitsetting commands are authorized commands, while autostrategy commands do not seem to be, at least the ones I’ve checked (switching it on and off).
Of course, the way the response code must be calculated is not publicly known. This means: Plextor does not tolerate that anyone could modify the bitsetting configuration of this drive on Linux or any other OS than Windows.
This time, it will be a lot harder to get it work than it was last time. I cannot even promise that it is feasable at all