Newbie has IIgs questions

[travis@cluracan.org (Ward C. Travis)]

I bought a IIgs at a yard sale, one with no floppy at all. And, hence, no
OS. I have downloaded the 6.0.1 OS from Apple, but cannot transfer it onto
the IIgs to begin work. Here's why:

The files must be BinSCII'd first. Fine, I have an Apple ][, but I do not
have ProDOS on it. I found ProDOS also on the Apple Web, but it too is
BinSCII'd!

Now, I can't run BinSCII because I suspect it calls into ProDOS to make
its files. If I could run BinSCII on a DOS 3.3 system, I'd be closer, but
the disks it would make would be 5.25" 140K things and not real good for
holding the GS OS. But at least then I could boot ProDOS on a DuoDisk
connected to the IIgs.

So: is there any way to unpack the ProDOS 4.02 .BSC file on an non-ProDos
system? (See my frustration here.)

SO: there're a few other catch-22's about why I can't get the OS onto the
IIgs. I notice that the IIgs boots into Applesoft Basic if I leave the
drive (I had a DuoDisk, but it's not big enough for the IIgs OS) empty.
What would really accelerate me here is a Mac version of BinSCII that will
leave the results on a  ProDOS floppy, or just in HFS where I can copy it
to a ProDOS floppy using the fork-stripper app.

Does it exist? Is there a BinSCII app for MacOS?

I've even considered the use of WinApple.exe (Windows Apple emulator) or
IIe 3.0, but cannot find the ROMs for IIe on asimov anymore -- and
technically I have no rights to copy those anyway, even if I do have two
Apple ///s, a IIgs, an Apple II+, and a 7600 in this room with me :-( I'm
still left with no credible way to get ProDos launched on the IIgs.

Please tell me that some savvy Mac developer has a BinSCII for the Mac finder...

-- 
Ward C. Travis -- @Cluracan.ORG -- Just collecting everything.