SNES Hires / Laced modes Jumpy

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Load Power Drive
2. Watch Intro
3. or play for a bit and view car repair screen.

What is the expected output? What do you see instead?
I expect to see a steady image.  Instead these hires (laced?) screens are 
jumpy.  The effect can be seen on 

What version of the product are you using? On what operating system?
Bizhawk SVN8515.  I have tried Bsnes and Higan emulators and they seem to 
display ok although I can tell if they are opening a hires mode as it does not 
switch between lowres and hires modes. (I am using double low res mode in 
bizhawk)

Please provide any additional information below.
I have tried Bsnes and Higan emulators and they seem to display ok although I 
can tell if they are opening a hires mode as it does not switch between lowres 
and hires modes. (I am using double low res mode in bizhawk). The effect can 
also be seen in the game Syvalion as hires is used for the dialogue sections.

https://www.youtube.com/watch?v=uzWuq8zs4ZU&feature=youtu.be

I have attached a video where you can see the effect in action.  You will need 
to select 50 fps mode in youtube options to see it.

Maybe it is supposed to be this way, I don't know which is why I have posted 
here and hope I am not wasting anyone's time with this.

Original issue reported on code.google.com by MThompso...@gmail.com on 17 Dec 2014 at 2:19

[GoogleCodeExporter]

maybe we're not handling interlacing correctly and we're supposed to be 
deinterlacing. 

Original comment by zero...@zeromus.org on 18 Dec 2014 at 6:53

• Changed state: Accepted

[GoogleCodeExporter]

Not sure if this this a defect or an enhancement.  Considering it a defect due 
to improper behavior.

Original comment by hegyak on 14 Jan 2015 at 3:41

• Added labels: Core-BSNES, Type-Defect