I look for source/tips on "ed" old QNX.2 editor

[Jefsey Morfin <jefsey@wanadoo.fr>]

To all.
I come from QNX and Dos. I am quite used to the "ed"/"qed"/"ged" editor 
from QNX 2 ported under Dos. IMHO simple, powerful and very stable with 
nice features helping organizing smart code presentation. Would anyone know 
if there is a Debbian Version? Or a source code version (it was ported 
under Dos and QNX Softwares have probably disregarded it a long ago).
Thank you for your help.
Jefsey