Low Quality on GameBody Advance

[korroto]

So I just downloaded a GameBody Advance emulator from C*****M, which I suppose is a trustworthy site, and I also downloaded Pokemon Emerald for it. Now I haven't played Pokemon Emerald in a long time, so I thought that the resolution it was preset at was the highest it could go. When I was messing around with options, I noticed it had gotten a lot clearer, and I could see the pixels and not just some mashed up blocks. Every time I would return back to the game however, it would just go back to the bad quality. Any help is appreciated c:

(Unable to post any links to pictures, not sure how to show the difference, but if anybody could help that'd be great.)

[ulaoulao]

well we host emulators here and we know they are correct versions. Also that site you listed has mame roms and we can allot you to mention that domain name here sorry.

The biggest misconception is the screen size. I assume you know this but GBA is 240 x 160 pixels. Plus I think its interlaced. So without a interlace filter you looking at 120 X 160. That is a postage stamp on a compute screen. So to see it you must stretch the image.

[korroto]

Oh, thanks for telling me c:

Also, my friend got the same emulator and the same game, but he can play it in full screen with the better graphics. It doesn't really bother me anymore, but do you know if there's any way to get it better?