[Ham-Mac] Vintage Mac vs OSX Mac Use Question

[Bob Witmer]

Hello All

I have an old Radio Shack Model 100 that is still very useful for  
taking notes.  The problem is that I used to use a “Terminal  
Interface” type program on a pre-OSX Mac, along with a corresponding  
serial interface cable that connected the Model 100 to one of the  
Mac’s serial ports for transferring files.

Essentially the process would be that I would first set the serial  
ports of both computers to the same data rate and error correction  
configuration.  I then would then set the Mac to be able to “receive”  
a text file (which upon receipt would then be saved and read into a  
word processing program) and then the desired file in the Model 100  
would be selected and “sent” to the Mac.  At times I would reverse  
the process and send a text file to the Model 100 from the Mac.

I would think such a program still exists that will run on OSX and  
I’m looking for suggestions and where to look.  I would also expect  
that I will have to use an external serial to USB converter such as  
one of the “Keyspans”?

My intended use is probably similar to anyone attempting to use a TNC  
such as the KPC-3 with a current OSX Mac.

Thanks in advance for your recommendations!

Bob

W3RW