I'm going to answer your question as best I can, but first some caveats, or assumptions, that you should be aware of: (1) study the controller selection|setup in Rf9.5 (2) study the digital switch | channel selection sections of the DX8e (3) be willing to read the manuals for both Rf9.5, and the Spectrum DX8e. I cannot over emphasize this enough.
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The software radio of Rf9.5 Sim (hereafter Sim) is setup with the flaps on channel 6, activated by default with a knob. What you need to do is set the DX8e switches and channels to get your SAFE select (B) and your Flaps (D) setup.
I make a model in my DX8G2 (the following should also work in the DX8e, or be close) called Generic Sim (SAFE). I set my SAFE select on AUX1, and set it to switch B. I inhibit my AUX2, and set my AUX3 channel to be AUX2 and put it on switch D. (big picture, details follow)
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These are the detailed instructions following; first be aware that there are several ways to accomplish the same thing, and my solution is just one way... also you can accomplish an equivalent solution by adjusting the Sim or the DX8e. How you decide to do that is up to you, but is important because you must be consistent.
--- INSTRUCTIONS
(1). Use the Sim controller Spektrum Receiver (7+ch) selection in Rf9.5 under Simulation | Select Controler, and leave (use) the defaults for this setup.
We will setup the DX8e to match what the Sim expects.
(2). In the DX8e: AUX1 (B) safe select:
In the DX8e: AUX3->AUX2 (D) flaps:
---(assumed standard airplane model created)---
---( you can use the default Acro model )---
---( and rename it Generic Sim (SAFE) )---
(3). Select model -> Generic Sim (SAFE)
(4). Channel Assign
Rx Port Assignments
6:AUX1:Aux 1
7:AUX2:inhibit
8:AUX3:Aux 2
[next]
Channel Input Config
5 Gear: A
6 Aux1: B
7 Aux2: D
8 Aux3: RKnb (or whatever, inhibited)
(5). System Setup | Digital Switch Setup
Select (B)
Channel: Aux 1
Select (D)
Channel: Inhibit
This is a little confusing, but when
you try to set the channel for (D)
you will be directed to the channel
input config-- can verify 7 Aux2: D
6). <Main Screen>
At this point the Generic Sim (SAFE) model will be saved and can now be used with the Rf9.5 Sim, with the following caveats:
(1) most of the E-Flite planes (with SAFE) will work.
(2) most of the E-Flite planes (no SAFE) will work.
(3) some planes with flaps will work on (D), not all.
Again, keep in mind, you can setup your DX8 and use the eight channels any way you want to, there isn't just ONE right way. This way has worked for me, your mileage may vary (again, I have the latest DX8G2, latest firmware)
Also, I don't know if your DX8e has a knob? Cosmetic.
The big picture again is that the DX8 Aux1 (channel 6) is being used (B) for Sim SAFE select. The DX8 Aux2 (knob) is inhibited, and Aux3 ->Aux2 is being used (D) for flaps ( essentially channel 8 ). My DX8G2 has a physical knob on the aux channels that I'm not using on any channel (inhibited) since I use the knob for voice volume on the DX8G2 (DX8e doesn't have voice).
It should be possible to setup the Sim controller (Spektrum (7+ch) ) to accept what the DX8e is sending, by default, but I have not attempted that yet. Once I got my flaps and SAFE select to work I quit screwing around with it...
Hopefully, you'll be able to follow this enough to do what is necessary on your DX8e. If you have issues or other questions please let me know. Remember, nothing substitutes for reading the manuals.
marcus.