COPPER POKEW

The primary purpose of the COPPER POKEW instruction is to modify the value of a specific memory location or hardware register at a specific time, synchronized with the television's video display, and having the size of two bytes.

A copper list is a sequence of special instructions that the processor executes independently of the main execution. These instructions are programmed to execute in sync with the video signal, typically when the television's video display reaches a specific horizontal and vertical position on the screen.

The instruction acts as a "real-time controller" for various aspects of the hardware system, particularly those related to graphics. Essentially, it takes a 16 bit unsigned value (immediate data) and writes it to a specific destination.

The versatility of COPPER POKEW lies in its ability to manipulate the hardware registers that control critical aspects of the display.

EXAMPLE

 BEGIN COPPER
    COPPER WAIT LINE 10
    COPPER POKEW &H2c8, RED
 END COPPER