Does anyone know if the Yamaha P155 have auto accompaniments?

No accompaniments unless you count the built-in metronome.

The user manual is available on-line. When I'm shopping, once I've narrowed down the choices my next step is to download and read the user manuals.

The P-155 is on my current short list. I'd use a computer for all the "missing" features on the P-155.

There are tons of software that will suit your needs. They are continuously evolving, so all you really want is a good texture/feel for a DP.

ChrisA and KeVan, thank you very much for your answers. It was very informative.
Appreciate your time, thank you.

How would you use your computer to add all the "missing features"?

I crossed out the P155 from my list because of all these features which are not included... Is there any software that I could buy to fill in the gap?

Thanks

What features would you like to add?

For auto accompaniment there are two that I can think of:
1) "one Man Band" I think this is the most like the arraigner keyboards
they have several versions at http://www.1manband.nl/ It can play Yamaha style files
2) "Band in a Box" is better known and has been around "forever" http://www.pgmusic.com/

Both of the above are much more powerful then any of those simple patterns built into the keyboard.

Here is a list of more: http://www.synthzone.com/midiaccomp.htm
And then there is Apple's "main stage" that is targeted at performing professionals http://www.apple.com/logicstudio/mainstage/ but it's main job is sound not sequencing. It can do split keyboard and layering, drums and guitar amp modling and so on.

For any kind of virtual instruments it is easy to find thousands of those includes modeled analog synths

Recording and editing software is easy to find. Two examples are Pro Tools and Logic
http://www.digidesign.com/index.cfm?navid=507&langid=1
http://www.apple.com/logicstudio/logicpro/

This is what I can think of and I'm only just getting started. I can think of more titles but I don't know what most of them can do. Pick up the lastest Sweetwater, Sam Ask or Guitar Canter catalog and there are pages and pages of software. I don't know who'd ever have time to evaluate it all

Chris, thanks for all the creative sites. Really appreciate your taking the time to help me out. Thanks very much.