Asteroids black screen convicted: the game writes $00 to every color register; renderer innocent

The renderer and snapshot pipeline are innocent (write-then-clear sampling was also considered and excluded: the journal shows the written VALUES are zero). The L2 blocker is therefore the COLOR SOURCE CHAIN: the kernel stages colors from RAM/tables computed by overscan logic (the Pac-Man $D0-staging class), and that staging produces zeros — candidate causes: the color-computing routine not reached (F119 class), a color-table data read returning the wrong…

Raw traces, ROM material, local paths, and personal data are not part of this public record.