I'm trying to program my MX-3000 for my new Pioneer Elite VSX-94TXH receiver (which I'm loving so far).

Naturally, URC's database hasn't been updated with this receiver's codes yet. The closest they've got is last year's model, the 84. The trouble is, that receiver only had two HDMI inputs: no HDMI3 or HDMI4. So there are no discrete codes for those inputs in the database.

To make things more difficult, I can't simply learn the signals from the Pioneer remote, as it only has one HDMI button that cycles through the four inputs.

Any help anyone could give me with finding the full line of discrete codes for this receiver would be greatly appreciated.

Until URC updates codes, use Two step Macro to get you to HDMI 3: HDMI 2 from the old codes as an "anchor" (a known starting point) and the learned HDMI toggle once. Use a Three step Macro to get you to HDMI 4: HDMI 2 from the old codes and the learned code (toggle) twice. This should hold you over until they update.