set_xres
From ArchaicPixels: HuC and PCEAS Documentation
set_xres(int xres); [ 1.5+]
set_xres(int x_resolution, int color_correct_flag); [ 3.11+ ]
Change the horizontal resolution to 'xres' (in pixels).
This changes the video controller's registers to display
more pixels on the screen; it does not affect virtual
calculations.
color_correct_flag indicates what kind of smoothing must be
used, XRES_SHARP or XRES_SOFT.
The 5MHz dot clock will be used up to horizontal resolutions
of 268. 7 MHz dot clok will be used up to 356. 10MHz dot clock
will be used beyond this. Maximum visible resolution seems to be
about 512.
