pub const DIAG_SITE_READ: u8 = 0xD0; // 208u8Expand description
Moved to psx_io::cd::reader. Kept at this path for one stage so
psx_pack::cd::SectorReader still resolves; a re-export cannot carry a
deprecation.
SectorReader::diagnostics command byte standing in for a read_sector
wait (ReadN is streaming; no command byte is in flight).