/vr/ - Retro Games

>>1874554
>PAL-N
This is not your regular PAL.
It's 60hz with a subcarrier frequency not equal to normal PAL or NTSC.

>>1875258
>I believe that checks out given a 640x240 output.
Problems with math?
If the scanline is about 64µS long then you can fit about 800 pixels in this period, but impractical because of synctip and blanking.
Now 640 pixels at 12.5mhz would be about 51.2µS long which is pretty much the average upper limit for active video, and most TVs in general won't show ALL of it. (overscan)
My TVs are calibrated with 5% overscan on each side (good for NES/SNES), cutting of 10% of the picture in total. So i would only see about 46µS with 576 pixels on the screen.

>Tell that to the people who reverse-engineered the N64's RDP and VI components.
Well, i just took a close look at the register documentation of the VI.
These ones are interesting:

>0x0440 0008 to 0x0440 000B VI_WIDTH_REG or VI_H_WIDTH_REG
>VI width
>(RW): [11:0] frame buffer line width in pixels

>0x0440 0024 to 0x0440 0027 VI_H_START_REG or VI_H_VIDEO_REG
>VI horizontal video
>(RW): [9:0] end of active video in screen pixels
>[25:16] start of active video in screen pixels

>0x0440 0030 to 0x0440 0033 VI_X_SCALE_REG
>VI x-scale
>(RW): [11:0] 1/horizontal scale up factor (2.10 format)
>[27:16] horizontal subpixel offset (2.10 format)

Each game can set this as the programmer(s) pleased it.

Pic related is a BT. 601 screenshot. This very common standard defines a sampling rate of 13.5mhz with a total of 720 pixels on both 50 and 60hz.

>>1262578
>PAL had slightly higher resolution
True, but the vertical color resolution is decreased by half because of the way how PAL works.

>>1262591
>there is such a thing as PAL-60Hz (but it's not supported by many yuro CRT TVs)
I personally say that every 90s Trinitron can do it and most other brands of the 2000s. But here it's a matter of the way of the TV deflection circuits works. The chroma processor should be able to display that signal in color, but the (vertical) deflection must be able to work with 60hz properly.

>>1262603
>None on consoles
YOU FUCKING LIAR.
See the attached screenshot.