Altera SDK for OpenCL target FPGAs

Hello,

I am under the impression that the SDK for OpenCL only targets Stratix V and Cyclone V SoC devices. Is this accurate? Does it not support legacy devices? I have a Cyclone III device, I was hoping to generate code to compile over to HDL/RTL and load up to the Cyclone III device but now I'm not sure if that is possible. I guess it's probably due to the fact that there is a regular C/C++ code that runs on the host which calls out the Kernel code which is targeting the hardware accelerator (FPGA fabric). Without a host this is not doable I guess?

Any comments are welcome to help educate me on this topic, but ultimately a straight forward answer is what I'm looking for in terms of which Altera Devices are supported.

Thanks!