NES 2.0 Mapper 533 is used for the Sachen 3014 board, used for the game 動動腦 II: 國中英文(一) (Dòngdòngnǎo II: Guózhōng Yīngwén (I), also known as Middle School English II, SA-003). It's a CNROM-like board with the added ability to read back the latch content for protection purposes.
Mask: $8000 D~7654 3210 --------- LLLl .... ++++------ Set latched value that can be read back at $E000-$EFFF +------ Select 8 KiB CHR-ROM bank at PPU $0000-$1FFF
Mask: $F000 D~7654 3210 --------- .... LLLL |||| ++++- Latched value previously written to D4-D7 of $8000-$FFFF ++++------ value from ROM
Categories: CNROM-like mappers