Double Dragon II - The Revenge Memory Map

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Memory Map

The following is a memory map that was generated based on the MAME source code (.180). This information is only as accurate as the MAME driver is. If you see any errors, please let me know what that error is.

The Memory Area is related to where the information is from (CPU, Sound Board, etc..), and it may also reflect what it has in common with other hardware.

Double Dragon II - The Revenge (bootleg, 1988)

Memory Area:dd2_map

Address Range	Length	Function	Description
0x0000-0x17FF	6144	RAM
0x1800-0x1FFF	2048	RAM Write, Shared	ddragon_fgvideoram_w, fgvideoram
0x2000-0x21FF	512	Read/Write, Shared, Mirror	ddragon_comram_r, ddragon_comram_w, comram, 0x0600
0x2800-0x2FFF	2048	RAM, Shared	spriteram
0x3000-0x37FF	2048	RAM Write, Shared	ddragon_bgvideoram_w, bgvideoram
0x3800	1	Read Port	P1
0x3801	1	Read Port	P2
0x3802	1	Read Port	EXTRA
0x3803	1	Read Port	DSW0
0x3804	1	Read Port	DSW1
0x3808	1	Write	ddragon_bankswitch_w
0x3809	1	Write Only, Shared	scrollx_lo
0x380A	1	Write Only, Shared	scrolly_lo
0x380B-0x380F	5	Read/Write	ddragon_interrupt_r, ddragon_interrupt_w
0x3C00-0x3DFF	512	RAM Device Write, Shared	palette, palette_device, write, palette
0x3E00-0x3FFF	512	RAM Device Write, Shared	palette, palette_device, write_ext, palette_ext
0x4000-0x7FFF	16384	ROM Bank	bank1
0x8000-0xFFFF	32768	ROM

Memory Area:dd2_sound_map

Address Range	Length	Function	Description
0x0000-0x7FFF	32768	ROM
0x8000-0x87FF	2048	RAM
0x8800-0x8801	2	Device Read/Write	fmsnd, ym2151_device, read, write
0x9800	1	Device Read/Write	oki, okim6295_device, read, write
0xA000	1	Read	soundlatch_ack_r

Memory Area:dd2_sub_map

Address Range	Length	Function	Description
0x0000-0xBFFF	49152	ROM
0xC000-0xC3FF	1024	RAM, Shared	comram
0xD000	1	Write	ddragon2_sub_irq_ack_w
0xE000	1	Write	ddragon2_sub_irq_w

ROM Map for this game

This is the ROM map for the game. This should tell you what address the ROM is at, how big it is, what it's used for.

Memory Area:gfx1

Address Range	Length	Label/Location	Description
0x0000-0xFFFF	65536	1	CRC(3ad1049c),chars (Fluke: 7579)

Memory Area:gfx2

Address Range	Length	Label/Location	Description
0x0000-0xFFFF	65536	27	CRC(fe42df5d),sprites
0x10000-0x1FFFF	65536	26	CRC(42f582c6)
0x20000-0x2FFFF	65536	23	CRC(e157319f)
0x30000-0x3FFFF	65536	22	CRC(82e952c9)
0x40000-0x4FFFF	65536	25	CRC(4a4a085d)
0x50000-0x5FFFF	65536	24	CRC(c9d52536)
0x60000-0x6FFFF	65536	21	CRC(32ab0897)
0x70000-0x7FFFF	65536	20	CRC(a68e168f)
0x80000-0x8FFFF	65536	17	CRC(882f99b1)
0x90000-0x9FFFF	65536	16	CRC(e2fe3eca)
0xA0000-0xAFFFF	65536	18	CRC(0e1c6c63)
0xB0000-0xBFFFF	65536	19	CRC(0e21eae0)

Memory Area:gfx3

Address Range	Length	Label/Location	Description
0x0000-0xFFFF	65536	15	CRC(3c3f16f6)
0x10000-0x1FFFF	65536	13	CRC(7c21be72)
0x20000-0x2FFFF	65536	14	CRC(e92f91f4)
0x30000-0x3FFFF	65536	12	CRC(6896e2f7)

Memory Area:maincpu

Address Range	Length	Label/Location	Description
0x8000-0xFFFF	32768	3	CRC(5cc38bad)
0x10000-0x17FFF	32768	4	CRC(78750947)
0x18000-0x1FFFF	32768	5	CRC(49ddddcd) (Fluke: A8A9)
0x20000-0x27FFF	32768	6	CRC(097eaf26) (Fluke: 3E5F)

Memory Area:oki

Address Range	Length	Label/Location	Description
0x0000-0xFFFF	65536	7	CRC(6d9e3f0f)
0x0000-0x01FF	512	prom.16	CRC(46339529),sprite timing (same as ddragon) (Fluke: 083F)
0x10000-0x1FFFF	65536	9	CRC(0c15dec9)
0x20000-0x2FFFF	65536	8	CRC(151b22b4)
0x30000-0x3FFFF	65536	10	CRC(ae2fc028)

Memory Area:sub

Address Range	Length	Label/Location	Description
0x0000-0x7FFF	32768	11	CRC(75e36cd6) (Fluke: 6DE1)
0x0000-0xFFFF	65536	2	CRC(ea437867) (Fluke: FB9D)