Help with 16X160 LED Display sign

I picked this up from a store liquidation but I have no idea how to program it. It doesn't have any way to identify who made it. i've tried looking at the powersupply and googling some numbers on the circuit board but didnt find anything useful. The powersupply is made by Mean Well so it didnt help much.

Here are some pics of it.







It uses a serial port connection. I've tried playing with software from a display company called Alpha, a program called Message Pro, I even tried using CrystalFontz but those didnt work.

Can someone help me identify this sign or give me some links to programs that might work with it?

When you start dealing with unknowns with these, its almost impossible to get them to do what you want without specs, in particular what chipset is running it. Have you tried taking the cover off?

it looks like the chipset is from Atmel (ATF1508AS)