Yes, yet others say they remember using it and triggering it via MIDI.
I suppose we're just talking about various usages and situations, such as an external program controlling the Philips cartridge, which is not what I'm asking about. I just want to use the built in sampler and am assuming that the 1205 cartridge is the source to do all of this, out of the box. I have no experience with any other BIOS, application, other cartridge, etc. Those are third party and not a a part of my question at all, though it is intriguing.
I suppose it's also a matter of program / firmware size. Maybe that was cut from the spec if the code ran out of space. That would be plausible. It's a shame though. It looks like I'll need to run a third party tool of some kind to put that sampler to use in a 'modern' (read '80s and beyond) setting 
All MIDI ports are functional on hardware level. The firmware in the module might not use it, but other software does. The expanders do add to the default, they do not take anything away.
This is good to know - thank you - but as a stock cartridge with no mods that doesn't help me really. It is, in effect, not functional until it's modified or until I source some other software (which I am happy to do). I was told that the RAM Expander doesn't retian the old ROM code and converts the cartridge to some MSX-Audio unit, which i know nothing about. As such, there is no built in sampler anymore. I'm referring to this:
If this actually does work or if there are other options I'd love to know more about it. All I want to do is record low bitrate samples and trigger them. In an ideal world I have more RAM to extend sampling lengths but still have some working software to create and control what's recorded.