Editing CD+G (section)

=== Instruction set ===
The main [[Machine code|instructions]] for manipulating graphics are:
* Memory Preset: Set the screen to a particular color.
* Border Preset: Set the border of the screen to a particular color.
* Tile Block (Normal): Load a 12×6 tile, 2 color tile and display it normally.
* [[Scrolling|Scroll]] Preset: Scroll the image, filling in the new area with a color.
* Scroll Copy: Scroll the image, rotating the bits back around.
* Define Transparent Color: Define a specific color as being transparent.
* Load Color Table (entries 0–7): Load in the lower 8 entries of the color table.
* Load Color Table (entries 8–15): Load in the upper 8 entries of the color table.
* Tile Block ([[Exclusive or|XOR]]): Load a 12×6 tile, 2 color tile and display it using the XOR method.