I will answer the long due unanswered questions.
Nanoloop: I'm sorry that I have neglected this question. NL cartridge support is not yet ready, simply because I haven't gotten to it yet. I want to do a minor reorganization of the over-all code before getting to it, but when that's done I will add the NL support. NL cartridge support should not be problematic and is an expected feature, but I do not want to announce it as done until it's done and confirmed to be stable.
I have two older NL cartridges, that were generously donated by Bud Melvin and someone else whose name escapes me, as well as an NL One. At a later point, I may want to borrow other cartridges if they are significantly different in function from the ones that I have. It may also be possible to add support for this remotely, that is, to send a beta version of the software to someone owning a flasher and a Nanoloop cartridge and let them try it.
Mac OS X support: I have currently installed a Hackintosh setup to allow me to test the software on OS X, and so far it works well. The software is written in Python, and the hardware is using an FTDI virtual serial port chip, which should make the software very platform independent. Currently Windows, OS X and Linux are confirmed working platforms, but even something like BSD or even Solaris should be a problem if there is just an FTDI serial driver for those systems.
The only cloud on the horizon with regard to OS X support is a problem reported to affect Arduino users. This problem stems from the fact that Apple included their own driver for interfacing FTDI chips. I have a hunch that this problem may affect ALTANE as well, if the problem is what I think is. Unfortunately I don't have access to a Mavericks installation to confirm this. (I've only been able to install Snow Leopard, OS X 10.6 so far.) There are three possible outcomes:
1) There actually is no problem using ALTANE on Mavericks. (Hooray.)
2) The problem is what I think it is, and I will be able to work around it easily.
3) ALTANE is affected, and I can't figure out a way to solve the problem. In this case there is still a work-around that involves installing FTDI's original driver.
For now, I'm confident ALTANE will be able work on all (modern) versions of OS X, including Mavericks.