Based on the layout in the manual:

0x0 gfx

0x1000 gfx2/map2 (shared)

0x2000 map

0x3000 gfx_props

0x3100 song

0x3200 sfx

0x4300 user-defined

0x5f00 draw state (+ unused)

0x5f80 persistent cart data (64 bytes)

0x5fc0 unused

0x6000 screen (8k)

Colour format (gfx/screen) is 2 pixels per byte: low bits on the left. Map format is one byte per cel (normally used as a sprite index)

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