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:scramble_map
Address RangeLengthFunctionDescription
0x0000-0x3FFF16384ROM
0x4000-0x47FF2048RAM
0x4800-0x4BFF1024RAM Write, Sharedgalaxold_videoram_w, videoram
0x4C00-0x4FFF1024Read/Writegalaxold_videoram_r, galaxold_videoram_w (/* mirror address */)
0x5000-0x503F64RAM Write, Sharedgalaxold_attributesram_w, attributesram
0x5040-0x505F32RAM, Sharedspriteram
0x5060-0x507F32RAM, Sharedbulletsram
0x5080-0x50FF128RAM
0x68011Writegalaxold_nmi_enable_w
0x68021Writegalaxold_coin_counter_w
0x68041Writegalaxold_stars_enable_w
0x68061Writegalaxold_flip_screen_x_w
0x68071Writegalaxold_flip_screen_y_w
0x70001Device Readwatchdog, watchdog_timer_device, reset_r
0x78001Device Readwatchdog, watchdog_timer_device, reset_r
0x8100-0x81034Device Read/Writeppi8255_0, i8255_device, read, write
0x8110-0x81134Device Readppi8255_0, i8255_device, read (/* mirror for Frog */)
0x8200-0x82034Device Read/Writeppi8255_1, i8255_device, read, write
Memory Area:scramble_sound_io_map
Address RangeLengthFunctionDescription
0x00101Device Write8910.1, ay8910_device, address_w
0x00201Device Read/Write8910.1, ay8910_device, data_r, data_w
0x00401Device Write8910.2, ay8910_device, address_w
0x00801Device Read/Write8910.2, ay8910_device, data_r, data_w
Memory Area:scramble_sound_map
Address RangeLengthFunctionDescription
0x0000-0x2FFF12288ROM
0x8000-0x83FF1024Write NOP, Sharedsoundram (/* only here to initialize pointer */)
0x8000-0x8FFF4096Read/Writescramble_soundram_r, scramble_soundram_w
0x9000-0x9FFF4096Writescramble_filter_w
Memory Area:triplep_io_map
Address RangeLengthFunctionDescription
0x0000-0x00012Device Write8910.1, ay8910_device, data_address_w
0x00011Device Read8910.1, ay8910_device, data_r
0x00021Readtriplep_pip_r
0x00031Readtriplep_pap_r
Memory Area:triplep_map
Address RangeLengthFunctionDescription
0x0000-0x3FFF16384ROM
0x4000-0x47FF2048RAM
0x4800-0x4BFF1024RAM Write, Sharedgalaxold_videoram_w, videoram
0x4C00-0x4FFF1024Read/Writegalaxold_videoram_r, galaxold_videoram_w (/* mirror address */)
0x5000-0x503F64RAM Write, Sharedgalaxold_attributesram_w, attributesram
0x5040-0x505F32RAM, Sharedspriteram
0x5060-0x507F32RAM, Sharedbulletsram
0x5080-0x50FF128RAM
0x5800-0x67FF4096ROM
0x68011Writegalaxold_nmi_enable_w
0x68021Writegalaxold_coin_counter_w
0x68041Writegalaxold_stars_enable_w
0x68061Writegalaxold_flip_screen_x_w
0x68071Writegalaxold_flip_screen_y_w
0x70001Device Readwatchdog, watchdog_timer_device, reset_r
0x8100-0x81034Device Read/Writeppi8255_0, i8255_device, read, write
 

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
0x0000-0x07FF2048ta6.5fCRC(d51cbd6f) (Fluke: 99F4)
0x0800-0x0FFF2048ta7.5hCRC(f21c0059) (Fluke: 58A0)
Memory Area:maincpu
Address RangeLengthLabel/LocationDescription
0x0000-0x0FFF4096k1-2h.binCRC(f16bdd40)
0x1000-0x1FFF4096k2-2k.binCRC(fa6214ef)
0x2000-0x2FFF4096k3-2l.binCRC(9f734d29)
0x3000-0x3FFF4096k4-2m.binCRC(1809ec77)
0x6000-0x67FF2048k5-2p.binCRC(60c1aa52)
Memory Area:proms
Address RangeLengthLabel/LocationDescription
0x0000-0x001F32ta.6eCRC(624f75df) (Fluke: 5BFB)
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