Sega Genesis Stretched Picture

[Bubby_the_Tour_G]

Hi! Years ago I was playing with my old 1989 sega genesis Model 1 with Super Monaco GP, and during the game, while racing, the screen skewed down a bit to a smaller size horizontally. But then later on, I bought 2 Model 2s, and then they did not do the same thing. During the race they would stretch to fit the whole screen. Then I bought just recently another Model 1 and it still stretches to fit the whole screen during the race.. What is going on?

[Joe Redifer]

Is there any way you could post pictures of this, from both model 1 and model2?

[Bubby_the_Tour_G]

Sure. Actually, my 2 other model 1s and my 2 model 2s stretch the screen, and my other model 1 used to skew it.

I sold off my first model 1, so i don't really know if it's just with my tv.

I took these with an emulator, but this is what it looks like on a regular 4:3 tv anyway, so here they are...

http://img352.imageshack.us/img352/5454/screenshot0101mh.jpg

http://img307.imageshack.us/img307/550/screenshot0111jv.jpg

[Joe Redifer]

Well being that 320x224 is 320x224, I'd say that the first TV just didn't have any overscan. Was it an LCD or a non-CRT type? or perhaps it was just adjusted for no overscan? The second model looks like it has overscan. All Genesis games have borders around all sides, which are sometimes colored.

[Bubby_the_Tour_G]

Well being that 320x224 is 320x224, I'd say that the first TV just didn't have any overscan. Was it an LCD or a non-CRT type? or perhaps it was just adjusted for no overscan? The second model looks like it has overscan. All Genesis games have borders around all sides, which are sometimes colored.

Hmm... I still have my Old tv that doesn't have the overscan... by the way its not an lcd tv or anything. it is a cathode ray tube tv...I'll go ahead and try all of my consoles there and report my findings... But how can that be the problem if during the menu and boot up and intro, it stretches out just fine?

[Joe Redifer]

I'd really have to see what is going on with the TV itself before I could even begin to guess any more.

[Bubby_the_Tour_G]

I'd really have to see what is going on with the TV itself before I could even begin to guess any more.

Hmm, right now my garage is so clogged up with old wicker furniture that I can't even GET to my old tv! My tv is on a plastic table in the back, and my garage door is broken shut, so it might be a week until I actually get down to it...

It seems to happen also in Sonic the Hedgehog 2, during the special stages... my old model 1 would show it the way it is in the first, and my 2 other model 1s and my 2 model 2s do it the way it is in the 2nd pic ture...

You know what, come to think of it... I remember playing my old Model 1 on my new tv right before I sold it... and it looked like it did in the first... Please solve my mystery!!!

http://img142.imageshack.us/img142/8046/screenshot0129dw.jpg
http://img142.imageshack.us/img142/517/screenshot0136yc.jpg

[Joe Redifer]

I have the very first model of Genesis that came out when it was release. It does not do this. Weird. And it does this on other TVs or does not? Try the same Genesis on multiple TVs.

[segagamer]

My launch model 1 Genesis also does not exhibit this problem with the display. I also have a model 2 Genesis that I can try, but I think this problem may only show up in emulation (at least for me).

[Joe Redifer]

It didn't show up in emulation for me.

[Bubby_the_Tour_G]

My launch model 1 Genesis also does not exhibit this problem with the display. I also have a model 2 Genesis that I can try, but I think this problem may only show up in emulation (at least for me).

Yes please, try it out on the model 2 genesis and tell me if it stretches or not :)

[Bubby_the_Tour_G]

please? 4 years later? anybody?

[kool kitty89]

It didn't show up in emulation for me.

What he shows in emulation looks like Gens with one with stretching enabled and the other without, thus leaving the top and bottom boarder (albeit gens always clips to 224 so you don't get a proper boarder as in fusion) and also a side boarder when in 256 wide mode as it displays square pixels.

In fusion (specifically 3.61 onward) the screen is stretched to 320 wide regardless unless you go into the configuration file or use a plugin (like Steve Snake's doubleraw plugin), though the vertical boarder is still present unless "NTSC aspect" is enabled.


As for the real consoles, I don't see why any should do that when compared on the same TV. On different TVs, yes, if overscan is calibrated differently, but not on the same TV. (the analog resolution would be identical, and the vertical resolution is not variable at all, it's fixed on SDTVs unless you're talking PAL vs NTSC with 50 Hz, horizontal res change would be a different dot clock, which also wouldn't make any sense)