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.
Memory Area:pacman_map
Address RangeLengthFunctionDescription
0x0000-0x3FFF16384Mirror, ROM0x8000,
0x4000-0x43FF1024Mirror, RAM Write, Shared0xa000, pacman_videoram_w, videoram
0x4400-0x47FF1024Mirror, RAM Write, Shared0xa000, pacman_colorram_w, colorram
0x4800-0x4BFF1024Mirror, Read, Write NOP0xa000, pacman_read_nop,
0x4C00-0x4FEF1008Mirror, RAM0xa000,
0x4FF0-0x4FFF16Mirror, RAM, Shared0xa000, , spriteram
0x50001Mirror, Write0xaf38, irq_mask_w
0x50001Mirror, Read Port0xaf3f, IN0
0x50011Mirror, Device Write0xaf38, namco, namco_device, pacman_sound_enable_w
0x50021Mirror, Write NOP0xaf38,
0x50031Mirror, Write0xaf38, pacman_flipscreen_w
0x5004-0x50052Mirror, Write NOP0xaf38, (// AM_WRITE(pacman_leds_w))
0x50061Mirror, Write NOP0xaf38, (// AM_WRITE(pacman_coin_lockout_global_w))
0x50071Mirror, Write0xaf38, pacman_coin_counter_w
0x5040-0x505F32Mirror, Device Write0xaf00, namco, namco_device, pacman_sound_w
0x50401Mirror, Read Port0xaf3f, IN1
0x5060-0x506F16Mirror, Write Only, Shared0xaf00, , spriteram2
0x5070-0x507F16Mirror, Write NOP0xaf00,
0x50801Mirror, Write NOP0xaf3f,
0x50801Mirror, Read Port0xaf3f, DSW1
0x50C01Mirror, Read Port0xaf3f, DSW2
0x50C01Mirror, Device Write0xaf3f, watchdog, watchdog_timer_device, reset_w
Memory Area:pengojpm_map
Address RangeLengthFunctionDescription
0x0000-0x0FFF4096ROM
0x4000-0x7FFF16384ROM
0x8000-0x83FF1024RAM Write, Sharedpacman_videoram_w, videoram
0x8400-0x87FF1024RAM Write, Sharedpacman_colorram_w, colorram
0x8800-0x8BFF1024RAM
0x8C00-0x8FEF1008RAM
0x8FF0-0x8FFF16RAM, Sharedspriteram
0x90001Read PortIN0
0x90001Writeirq_mask_w
0x90011Device Writenamco, namco_device, pacman_sound_enable_w
0x90021Write NOP
0x90031Writepacman_flipscreen_w
0x9004-0x90052Write NOP(// AM_WRITE(pacman_leds_w))
0x90061Write NOP(// AM_WRITE(pacman_coin_lockout_global_w))
0x90071Writepacman_coin_counter_w
0x90401Read PortIN1
0x9040-0x905F32Device Writenamco, namco_device, pacman_sound_w
0x9060-0x906F16Write Only, Sharedspriteram2
0x9070-0x907F16Write NOP
0x90801Read PortDSW1
0x90801Write NOP
0x90C01Device Writewatchdog, watchdog_timer_device, reset_w
0x90C01Read PortDSW2
0xF000-0xFFFF4096RAM
Memory Area:writeport
Address RangeLengthFunctionDescription
0x00001Writepacman_interrupt_vector_w (/* Pac-Man only */)
 

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 RangeLengthLabel/LocationDescription
0x0000-0x07FF2048pg9_mb8516.e6CRC(ad88978a)
0x0800-0x0FFF2048pg11.h6CRC(cee7cb9a)
0x1000-0x17FF2048pg10_mb8516.f6CRC(bae319a3)
0x1800-0x1FFF2048pg12_2716.j6CRC(5a5190e8)
Memory Area:maincpu
Address RangeLengthLabel/LocationDescription
0x0000-0x0FFF4096pg0_2732.binCRC(1a79436c)
0x4000-0x4FFF4096pg4_2732.binCRC(6210c06f)
0x5000-0x5FFF4096pg5_2732.binCRC(7c83d678)
0x6000-0x6FFF4096pg6_2732.binCRC(ae646d36)
0x7000-0x7FFF4096pg7_2732.binCRC(1628eb6d)
Memory Area:namco
Address RangeLengthLabel/LocationDescription
0x0000-0x00FF25682s126.1mBAD_DUMP CRC(a9cc86bf) (Fluke: 71E8)
0x0100-0x01FF25682s126.3mBAD_DUMP CRC(77245b66),timing - not used (Fluke: E0E5)
Memory Area:proms
Address RangeLengthLabel/LocationDescription
0x0000-0x001F32pr1633.78BAD_DUMP CRC(3a5844ec),color palette (Fluke: 3461)
0x0020-0x011F256pengopac.4aBAD_DUMP CRC(ef283be2),color lookup
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