Registers in common between a2xx and a3xx Address mode for a5xx+ Line mode for a5xx+ Note that Bresenham lines are only supported with MSAA disabled. Blob (v615) seem to only use SAM and I wasn't able to coerce it to produce any other command. Probably valid for a4xx+ but not enabled or tested on anything but a6xx. Produces garbage Causes reads from an invalid address Results in color being zero