Prototrak M3 rookie CAM questions

[Repeter]

I acquired a mill with a prototrak M3 control and I need help with some questions regarding programming and file loading/saving.
1) Is Mastercam able to configure CAD generated programs that the M3 can use?
2) My 3.5" floppy is'nt responding (probably broken) when I try to save M3 generated programs, so can I use the M3's RS232 port and work interactivly with a PC?
3) Which port do you use on the PC and where can I get a cable?

[DMF_TomB]

Prototrak manuals at
XYZ Machine Tools Reference - Manuals
Manuals - Southwestern Industries, Inc.
....... older obsolete equipment manuals need to be ordered as they may not be online. but still available to purchase. even if floppy drive is defective you can get spare parts from southwesternindustries
.
older models sometimes used 720kb floppy not 1.44mb floppy. you can put tape over one of the corner hole so machine thinks it is a 720kb floppy. you will need to format it as a 720kb floppy too. you may need a older computer to format a 720kb floppy.
Floppy disk - Wikipedia, the free encyclopedia
.
Mastercam web site has a generic 3 axis post processor for Prototraks. you still might have to do minor editing.
.
usually a null modem serial cable is used rs-232. i prefer a laplink cable the ones with 9 and 25 pin plug on both ends. cables are found on ebay
.
laplink serial cables - Google Search