_____ _____ _____ _____ ________
|CPU| |RAM| |APU| |I/O| |OTHERS|
--+-- --+-- --+-- --+-- --+-----
| 0x0000|0X1FFF | | |
+-----------+------+----+-----------+------+----+--------------CPU BUS
| ______|______ ____|___
| |PROGRAM ROM| |MAPPER|
| ------------- --------
__|__ 0x4020 0xFFFF
|PPU|
--+-- _____________ _______________ __________
| |8Kb PATTERN| |2Kb NAMETABLE| |PALETTES|
| ------+------ -------+------- -----+----
| 0x0000 | 0X1FFF 0X2000 | 0x2FFF 0x3F00 | 0x3FFF
+----------+-------------------+------------------+------------PPU BUS