pub const DP_STATUS_END_VALID: u32 = 0x200;Expand description
DPC_STATUS.END_VALID (the wiki’s END_PENDING, read bit 9) — an end
address is latched behind an in-flight transfer.
Defined for the read-back layout but not yet driven: setting it requires
tracking a transfer in progress, which only exists once the rasterizer
runs (tick is a stub). It therefore always reads 0 today, which is exactly
what n64-systemtest’s frozen start-valid case expects; the set/clear
transition lands with the FIFO drain.