load_background
From ArchaicPixels: HuC and PCEAS Documentation
load_background(char *gfx, int *pal, int *bat, char width, char height);
This function is an all-in-one function, it is used
to display a whole background image on the screen, like
a game title image. It will load BG character data,
it will load the palette, and finaly if will load the BAT.
Use it with directives #incchr, #incpal and #incbat
to manage the different type of data. The BG character
data will be stored at address 0x1000 to 0x5000 in video
memory.
