COPPER MOVE

The primary purpose of the COPPER MOVE instruction is to move the value of a specific memory location or hardware register at a specific time, to another memory location or hardware gister, and synchronized with the television's video display.

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 value from a source and it writes it to a specific destination.

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

EXAMPLE

 BEGIN COPPER
    COPPER WAIT LINE 10
    COPPER MOVE &H2c8, &H2c7 AS BYTE
    COPPER WAIT LINE 30
    COPPER MOVE &H2c8, &H2c7 AS BYTE
 END COPPER