Heaps

Game Heaps

The game's memory is split into 9 main heaps, or 10 in Korean:

Id	Name	Notes
0	Main
1	Map	Cleared on map change
2	Unused
3	Ext	Seems linked to the graphical effect for showing many NPCs at once (Dimentio clones, cutscene audiences, ...)
4	Effect	Visual effects such as footsteps
5	WPAD	Given to SDK controller library
6	Sound	Given to NW4R sound
7	Smart	Automatically compacted and garbage collected
8	Unused	(Non-Korean only)
8	Font	(Korean only)
9	Unused	(Korean only)

The splitting is done by memInit, with sizes determined by size_table.

Size table

The size table is an array of the following struct

Offset	Size	Description
0x0	4	Size type (1 = kilobytes, 0 = percentage of remaining memory after others allocated)
0x4	4	Size

Values in US and JP

All US and JP revisions place heaps 0-4 in MEM1 and 5-8 in MEM2, with the following sizes:

Id	Size
0	9216 KB
1	6144 KB
2	256 KB
3	256 KB
4	100% of remaining MEM1 space
----	------
5	128 KB
6	17408 KB
7	100% of remaining MEM1 space
8	1 KB

Values in EU

The EU revisions place heaps 0-3 in MEM1 and 4-8 in MEM2, with the following sizes:

Id	Size
0	9216 KB
1	6144 KB
2	100% remaining MEM1
----	------
3	256 KB
4	256 KB
5	128 KB
6	17408 KB
7	100% remaining MEM2
8	1 KB

Values in KR

The Korean version of the game places heaps 0-3 in MEM1 and 4-9 in MEM2, with the following sizes:

Id	Size
0	9216KB
1	6144KB
2	100% remaining MEM1
----	-------
3	256KB
4	256KB
5	128KB
6	17408KB
7	100% remaining MEM2
8	1312KB
9	1KB