Format

D 0 - X X X X X X   0 0 Y Y

XXXXXX = Address
YY = 8-Bit Value

Functionality

If byte value in location supplied is the same as value supplied do the next code. This code is useful if you only want to execute certain codes at certain points in the game (like on certain levels, or only when the game has fully loaded).

(The address CAN be odd or even.)

Example

D008030C 00FE
80100204 0067

If the address 08030C holds the byte value FE then do the code 80100204 0067, otherwise do nothing.