Hi! In bsnes 115’s core options, most (all ?) toggles are inverted: when an option is shown as “OFF”, it is actually on, and vice versa. For example, when “Crop overscan” is set to “8 pixels”, overscan is visible in-game, and when it is set to “OFF”, it is hidden. Same with HD Mode 7 etc…
The values of the core’s .opt file are consistent with what is shown on the core options screen. It seems that the core interprets “OFF” as “ON” and vice versa.
Seems to be working properly here. That is, crop overscan OFF has black bars, while 8 pixels fills the screen.
Sorry I mixed up what the crop options should look like. 
However, I still believe the HD Mode 7 option behaves strangely.
This is how games look with Supersampling ON (‘bsnes_mode7_scale’ set to 5x):
And this is with Supersamping OFF (‘bsnes_mode7_scale’ set to 5x):
No, that’s correct, too. Supersampling in this case means rendering at whatever high res and then downscaling back to 1x (for use with CRT shaders and the like). It ends u being pixelated but with more information than the true, native rendering.