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Crystal Beans from Dungeon Explorer/Patterns: Difference between revisions

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Latest revision as of 21:03, 28 January 2024

This is a sub-page of Crystal Beans from Dungeon Explorer.

Patterns
Game	Crystal Beans From Dungeon Explorer
Start Address	0x121CC7
End Address	0x12A08C
# of Entries	92
Entry Length	variable
Total Length	33734 bytes (0x83C6)
Back to the ROM map

The Patterns describes the instruments and the channels used in songs.

Format

Instrument used

Length: variable
Offset within entry: 0x0-?
Range of values: 0-60,255 (0x0-0x3C, 0xFF)

List of instrument indices (1 byte each) terminated by a $FF byte

Number of channel pointers in pattern

Length: 1
Offset within entry: variable
Range of values: 0-255 (0x0-0xFF)

Channel pointers

Length: Number of channel pointers in pattern * 2
Offset within entry: variable
Range of values: ?

List of 16-bits pointers using this pointer's address + 2 as a base

Channel data

Example

0x121CC9: 00 01 02 03 04 05 06 07 FF 07 0C 00 10 01 E5 01
0x121CD9: C3 02 5B 04 98 04 5F 05 ...

0x121CC9: Instrument used = 0, 1, 2, 3, 4, 5, 6, 7
0x121CD2: Number of channels = 7
0x121CD3: Channel pointer 0 = 0x121CE1 (0x121CD5 + 0x000C)
0x121CD5: Channel pointer 1 = 0x121DE7 (0x121CD7 + 0x0110)
0x121CD7: Channel pointer 2 = 0x121EBE (0x121CD9 + 0x01E5)
0x121CD9: Channel pointer 3 = 0x121F9E (0x121CDB + 0x02C3)
0x121CDB: Channel pointer 4 = 0x122138 (0x121CDD + 0x045B)
0x121CDD: Channel pointer 5 = 0x122177 (0x121CDF + 0x0498)
0x121CDF: Channel pointer 6 = 0x122240 (0x121CE1 + 0x055F)

See also

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