what is UA6528P

According to the diagram:


there are known 2 types of CPU:
UA6527P (PAL), UA6527 (NTSC) and
2 known types of PPU:
UA6528 (NTSC) and UA6538 (PAL).

However, there is also UA6528P available - for example on aliexpress:
What is that?

That's not for 60 Hz PAL such as Brazil's PAL/M, is it? If it is, I'd bet l_oliveira would know, as he tested my overclock ROM on a bunch of different configurations.

famiclones from argentina uses this IC

Argentina uses PAL-N, combining the lower subcarrier frequency of PAL-M with the 50 Hz scan rate of regular PAL. I guess I eventually need to add a test to my overclock demo telling which scanline NMI is on. What games work on it?

Over the past few years, did anyone ever get a chance to run 240p Test Suite on an Argentine chipset? Its CPU clock speed test, the successor to the overclock test, has an NMI scanline indicator.