[M100] transferring files both directions

[Will Senn]

So, I've read up and looked around for this and haven't found quite the 
answer I was looking for, so I'm asking here (don't worry, I'm not gonna 
eternally spam y'all, but I've got these initial questions...).

I've got a Mac Pro (big honking Mac machine from 2010 with 6, 3 ghz 
intel xeon processors, and a boatload of ram along with a 30 inch 
display) running Monterey (latest -1). I'm entirely comfortable with the 
Unix that lies underneath and have several FreeBSD and Linux boxes 
around the house.

I'm using Minicom to talk with my PAL-1 (a KIM-1 clone), my Raspberry 
Pi, and my beaglebone black. So, I'm reasonable comfortable, but by no 
means expert, on talking to devices over serial.

I believe that I ought to be able to hook up a Male DB-25 to the M100, 
connect that to a null modem cable  and that to a DB-9 to USB adapter 
that is attached to my Mac Pro's usb port and fire up Minicom to send 
and receive ascii files to and from the M100... but, honestly, it's just 
conjecture at this point. I'll have to find the DB-25, null-modem 
adapter, and DB-9 to USB adapter in the correct genders to make the 
hypothetical connection real. In the meantime, here's the question - 
does what I've suggested sound rational and likely to succeed or am I 
missing some key idea in the M100 to modern computer hookup equation?

Thanks,

Will