Pac-Man - 25th Anniversary Edition 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.

Pac-Man - 25th Anniversary Edition (Namco / Cosmodog, 2005)

Memory Area:25pacman_io_map

Address Range	Length	Function	Description
0x0000-0x003F	64	Read/Write NOP	(/* Z180 internal registers */)
0x0040-0x007F	64	Read/Write NOP	(/* Z180 internal registers */)
0x0080	1	Device Write	watchdog, watchdog_timer_device, reset_w
0x0080	1	Read Port	P1
0x0081	1	Read Port	P2
0x0081	1	Write	timer_pulse_w (/* ??? pulsed by the timer irq */)
0x0082	1	Read Port	SERVICE
0x0082	1	Write	irqack_w
0x0085-0x0086	2	Write Only, Shared	stars_seed (/* stars: rng seed (lo/hi) */)
0x0087	1	Read	_25pacman_io_87_r (// not eeprom on this)
0x0087	1	Write NOP
0x0089	1	Device Write	dac, dac_byte_interface, write
0x008A	1	Write Only, Shared	stars_ctrl (/* stars: bits 3-4 = active set; bit 5 = enable */)
0x008B	1	Write Only, Shared	flip
0x008C	1	Write NOP
0x008F	1	Write	_20pacgal_coin_counter_w

Memory Area:25pacman_map

Address Range	Length	Function	Description
0x0000-0x3FFFF	262144	Device Read/Write	flash, amd_29lv200t_device, read, write (// (always fall through if nothing else is mapped?))
0x4000-0x47FF	2048	RAM, Shared	video_ram
0x4800-0x5FFF	6144	RAM
0x6000-0x6FFF	4096	Write Only, Shared	char_gfx_ram
0x7000-0x717F	384	Write	sprite_ram_w
0x8000-0x9FFF	8192	Write NOP
0xA000-0xBFFF	8192	Write	sprite_gfx_w
0xC000-0xDFFF	8192	Write NOP	(// is this the sound waveforms in a different format?)
0xE000-0xFFFF	8192	Write NOP
0x1C000-0x1FFFF	16384	Write NOP

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:proms

Address Range	Length	Label/Location	Description
0x0000-0x7FFF	32768	pacman_25th.u14	CRC(c19d9ad0),Same as the MS. Pacman / Galaga graphics rom (Fluke: BB08)
0x0000-0x7FFF	32768	pacman_25th.u14	CRC(c19d9ad0),Same as the MS. Pacman / Galaga graphics rom (Fluke: BB08)