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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.
Calipso (Tago Electronics, 1982)
Memory Area:galaxian_map_base
Address RangeLengthFunctionDescription
0x0000-0x3FFF16384ROM
0x4000-0x43FF1024Mirror, RAM0x0400,
0x5000-0x53FF1024Mirror, RAM Write, Shared0x0400, galaxian_videoram_w, videoram
0x5800-0x58FF256Mirror, RAM Write, Shared0x0700, galaxian_objram_w, spriteram
0x6000-0x60012Mirror, Write0x07f8, start_lamp_w
0x60001Mirror, Read Port0x07ff, IN0
0x0001Button 1Active Low
0x0002UnusedActive Low
0x0004Joystick UpActive Low
0x0008Joystick DownActive Low
0x0010Joystick RightActive Low
0x0020Joystick LeftActive Low
0x0040Coin 2Active Low
0x0080Coin 1Active Low
0x60021Mirror, Write0x07f8, coin_lock_w
0x60031Mirror, Write0x07f8, coin_count_0_w
0x68001Mirror, Read Port0x07ff, IN1
0x00013Active High
0x00005Active High
0x0002OffActive High
0x0000OnActive High
0x0004Joystick UpActive Low
0x0008Joystick DownActive Low
0x0010Joystick RightActive Low
0x0020Joystick LeftActive Low
0x0040UnusedActive Low
0x0080UnusedActive Low
0x70001Mirror, Read Port0x07ff, IN2
0x0001Button 1Active Low
0x0002A 1/1 B 1/1Active High
0x0000A 1/2 B 2/1Active High
0x0004A 1/3 B 3/1Active High
0x0006A 1/4 B 4/1Active High
0x0008UprightActive High
0x0000CocktailActive High
0x00f0UnusedActive Low
0x70011Mirror, Write0x07f8, irq_enable_w
0x70041Mirror, Write0x07f8, galaxian_stars_enable_w
0x70061Mirror, Write0x07f8, galaxian_flip_screen_x_w
0x70071Mirror, Write0x07f8, galaxian_flip_screen_y_w
0x78001Mirror, Device Read0x07ff, watchdog, watchdog_timer_device, reset_r
Memory Area:scobra_map
Address RangeLengthFunctionDescription
0x0000-0x7FFF32768ROM
0x8000-0x87FF2048Mirror, RAM0x4000,
0x8800-0x8BFF1024Mirror, RAM Write, Shared0x4400, galaxian_videoram_w, videoram
0x9000-0x90FF256Mirror, RAM Write, Shared0x4700, galaxian_objram_w, spriteram
0x9800-0x98034Mirror, Device Read/Write0x47fc, ppi8255_0, i8255_device, read, write
0xA000-0xA0034Mirror, Device Read/Write0x47fc, ppi8255_1, i8255_device, read, write
0xA8011Mirror, Write0x47f8, irq_enable_w
0xA8021Mirror, Write0x47f8, coin_count_0_w
0xA8031Mirror, Write0x47f8, scramble_background_enable_w
0xA8041Mirror, Write0x47f8, galaxian_stars_enable_w
0xA8051Mirror0x47f8 (/* POUT2 */)
0xA8061Mirror, Write0x47f8, galaxian_flip_screen_x_w
0xA8071Mirror, Write0x47f8, galaxian_flip_screen_y_w
0xB0001Mirror, Device Read0x47ff, watchdog, watchdog_timer_device, reset_r
 

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 RangeLengthLabel/LocationDescription
0x0000-0x07FF2048calipso.5cCRC(9cbc65ab) (Fluke: 9488)
0x0800-0x0FFF2048calipso.5dCRC(a225ee3b) (Fluke: DFDE)
Memory Area:gfx1
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFF8192calipso.5fCRC(fd4252e9) (Fluke: 40C4)
0x2000-0x3FFF8192calipso.5hCRC(1663a73a) (Fluke: 8408)
Memory Area:maincpu
Address RangeLengthLabel/LocationDescription
0x0000-0x0FFF4096calipso.2cCRC(0fcb703c) (Fluke: D0C7)
0x1000-0x1FFF4096calipso.2eCRC(c6622f14) (Fluke: 3023)
0x2000-0x2FFF4096calipso.2fCRC(7bacbaba) (Fluke: 2085)
0x3000-0x3FFF4096calipso.2hCRC(a3a8111b) (Fluke: 9A47)
0x4000-0x4FFF4096calipso.2jCRC(fcbd7b9e) (Fluke: 7633)
0x5000-0x5FFF4096calipso.2lCRC(f7630cab) (Fluke: ECD0)
Memory Area:proms
Address RangeLengthLabel/LocationDescription
0x0000-0x001F32calipso.clrCRC(01165832) (Fluke: 63C1)
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