/vr/ - Retro Games

>>1981443
The newer MC44002 doesn't have the technology to set it's chroma decoder to that was has been detected. It can identify PAL and SECAM but doesn't set chroma decoder to that, the TV's microcontroller is supposed to read the status of the MC44002 via I2C and set certain things according to this.
Looks like Sony fucked that up, it seems that it forces the chroma decoder to NTSC if there are less than 576 lines which is a good reason why PAL60 fails.
I managed to add support for plain NTSC in my KV-M1450D by soldering a 14.318mhz crystal, a 10pF capacitor and enabling NTSC support in the service menu.
But i found out that the detection is quite quirky. I input a plain NTSC signal with 50hz first and it's monochrome, then i switch to 60hz and it works, then i switch back to 50hz and it keeps working.
The older TDA4650 in my KV-C2521D detects PAL, NTSC, NTSC443 at any field frequency and SECAM only at 50hz. The support for NTSC443 in my KV-M1400D is broken as Sony omitted the NTSC crystal and shorted pin 19 to ground. On both TVs the NTSC hue setting is only available on 60hz regardless of the actual color standard and on my KV-M1450D it's only available when a actual NTSC signal has been detected.
However, now i know that some 90s Trinitrons don't support PAL60 but plain PAL because some Sony employees went full retard.
I don't see any good reason to tie color standards to field frequencies, only idiotic engineers and programmers do that as they can't imagine that non-standard video signals can be generated.