Can somebody tell me where could I find a 80c552 emulator?
In case you are talking about an In Circuit Emulator, I would recommend the iSystem iC181. That is what I am using. It is lower midrange price-wise, but it works pretty well and the software is ok to use too and works together very well with the keil development tools. The website is http://www.isystem.com I have my emulator for nearly 4 years now and I have never experienced problems with it. I am using it pretty often. I think, I have paid about US$4000 for it, the 552 POD and software included.
The Ceibo EB-51 serves me very well and cost only ~$1400 Erik