Using tu58fs with RT11 5.7

[Douglas Taylor via cctalk]

I wanted to try using tu58fs with a RT11 system running version 5.7 to 
transfer files in/out.

To my surprise RT11 5.7 retired the DD: device, a DD.MAC file is there, 
but it is unsupported.

(1) How do you compile a device driver file?  How do you link and 
install it?

(2) Has anyone done this?

(3) Is anyone using tu58fs with a RT11 5.7 system?

Doug