WW III 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.

WW III (Irem, 1981)

Memory Area:ww3_main_map

Address Range	Length	Function	Description
0x0000-0x1FFF	8192	RAM
0x2000-0x3FFF	8192	RAM Write, Shared	redalert_bitmap_videoram_w, bitmap_videoram
0x4000-0x4FFF	4096	RAM, Shared	charram
0x5000-0xBFFF	28672	ROM
0xC000	1	Mirror, Read Port, Write NOP	0x0f8f, C000,
0xC010	1	Mirror, Read Port, Write NOP	0x0f8f, C010,
0xC020	1	Mirror, Read Port, Write NOP	0x0f8f, C020,
0xC030	1	Mirror, Read NOP, Write	0x0f8f, , redalert_audio_command_w
0xC040	1	Mirror, Read NOP, Write Only, Shared	0x0f8f, , , video_control
0xC050	1	Mirror, Read NOP, Write Only, Shared	0x0f8f, , , bitmap_color
0xC070	1	Mirror, Read/Write	0x0f8f, redalert_interrupt_clear_r, redalert_interrupt_clear_w
0xF000-0xFFFF	4096	ROM, Region	maincpu, 0x8000

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:audiocpu

Address Range	Length	Label/Location	Description
0x7000-0x77FF	2048	w3s1	CRC(4af956a5) (Fluke: E585)

Memory Area:maincpu

Address Range	Length	Label/Location	Description
0x5000-0x5FFF	4096	w3i5.3f	CRC(9fc24ad3) (Fluke: C6AA)
0x6000-0x6FFF	4096	w3i6.3d	CRC(cb2a308c) (Fluke: B4DD)
0x7000-0x7FFF	4096	w3i7b.3b	CRC(1a0c3936) (Fluke: 75FC)
0x8000-0x8FFF	4096	w3i8.3g	CRC(9e18a92c) (Fluke: DED8)
0x9000-0x9FFF	4096	w3i9.3e	CRC(8c5884a4) (Fluke: 67A1)
0xA000-0xAFFF	4096	w3ia.3c	CRC(dccb8605) (Fluke: FDCA)
0xB000-0xBFFF	4096	w3ib.3a	CRC(3658e465) (Fluke: 650A)

Memory Area:proms

Address Range	Length	Label/Location	Description
0x0000-0x01FF	512	m-27sc.1a	CRC(b1aca792),512*8 74S472 or compatible BPROM like a 82s147 (Fluke: 6DDD)