HP71B: lets come to speed

[floppy]

Hello,
I would like to use the HP71B for having a better numerical precision than few programs running for now on my HP41.
(NO, I will not use python or others in my Debian 64bits PC ;-).
For example, I would like to rewrite the basic program from ellipse perimeter calculation in http://www.numericana.com/answer/ellipse.htm#elliptic chapter "(2001-01-25) Very Precise Fast Computations" into an HP71B like basic.
Is there any editor similar to the hp41uc, compiling any TXT file into other files format for direct upload into the HP71 emulator?
Ok ok, using my fingers direct into the HP71 is possible. However, any advice how to use a wide PC Text-Editor would be good (I can open several programs in parallel and make a quicker creation of routines).
If there is nothing for Basic, then I can invest time and move directly to HP71B FORTH: is there any PC editor for it? (same: PC TXT editor or others to be compiled into a file format for upload into EMU71).
Thanks.