Jo Engine Forum

Sega Saturn Development => General Jo Engine Help => Topic started by: b1tsh1ft3r on October 14, 2017, 03:19:12 pm

Title: Video resolution
Post by: b1tsh1ft3r on October 14, 2017, 03:19:12 pm

Hello!

I'm excited to start using the jo-engine, however i had a few questions that maybe someone could clear up for me.

Im curious what screen resolutions can be used on the saturn? Is 400x240 is something that could be achieved?

Thank you in advance

Title: Re: Video resolution
Post by: mindslight on October 14, 2017, 03:50:23 pm

Hi!

There is several resolution available, but I suggest you to start with the native resolution like 99% of games :)

NTSC: 320x240
PAL: 320x256

Title: Re: Video resolution
Post by: XL2 on October 14, 2017, 08:15:09 pm

400x240 isn't supported. You can try 352x240, which has the benefit of using higher VDP1 clockspeed than 320x240 (28 vs 26 Mhz). I'm not sure if that increased clockspeed fully compensates the increased resolution as I never tried on real hardware, but you can try it.
You can read the VPD1 and 2 manuals for more information about the supported resolutions : https://antime.kapsi.fi/sega/files/ST-013-R3-061694.pdf