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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.
Space Warp? (Century Electronics, 1983)
Memory Area:galaxold_map
Address RangeLengthFunctionDescription
0x0000-0x3FFF16384ROM
0x4000-0x47FF2048RAM
0x5000-0x53FF1024RAM Write, Sharedgalaxold_videoram_w, videoram
0x5400-0x57FF1024Readgalaxold_videoram_r
0x5800-0x583F64RAM Write, Sharedgalaxold_attributesram_w, attributesram
0x5840-0x585F32RAM, Sharedspriteram
0x5860-0x587F32RAM, Sharedbulletsram
0x5880-0x58FF128RAM
0x60001Read PortIN0
0x6000-0x60012Writegalaxold_leds_w
0x60021Writegalaxold_coin_lockout_w
0x60031Writegalaxold_coin_counter_w
0x6004-0x60074Device Writecust, galaxian_sound_device, lfo_freq_w
0x68001Read PortIN1
0x6800-0x68023Device Writecust, galaxian_sound_device, background_enable_w
0x68031Device Writecust, galaxian_sound_device, noise_enable_w
0x68051Device Writecust, galaxian_sound_device, fire_enable_w
0x6806-0x68072Device Writecust, galaxian_sound_device, vol_w
0x70001Read PortIN2
0x70011Writegalaxold_nmi_enable_w
0x70041Writegalaxold_stars_enable_w
0x70061Writegalaxold_flip_screen_x_w
0x70071Writegalaxold_flip_screen_y_w
0x78001Device Writecust, galaxian_sound_device, pitch_w
0x7800-0x7FFF2048Device Readwatchdog, watchdog_timer_device, reset_r
0xFFFC-0xFFFF4RAM
Memory Area:hunchbkg
Address RangeLengthFunctionDescription
0x0000-0x0FFF4096ROM
0x1480-0x14BF64Mirror, RAM Write, Shared0x6000, galaxold_attributesram_w, attributesram
0x14C0-0x14FF64Mirror, Write Only, Shared0x6000, , spriteram
0x1500-0x15012Mirror, Write0x6000, galaxold_leds_w (/* not connected ... */)
0x15001Mirror, Read Port0x6000, IN0
0x15021Mirror, Write0x6000, galaxold_coin_lockout_w (/* not connected ... */)
0x15031Mirror, Write0x6000, galaxold_coin_counter_w
0x1504-0x15074Mirror, Device Write0x6000, cust, galaxian_sound_device, lfo_freq_w
0x15801Mirror, Read Port0x6000, IN1
0x1580-0x15878Mirror, Device Write0x6000, cust, galaxian_sound_device, sound_w
0x15831Mirror, Device Write0x6000, cust, galaxian_sound_device, noise_enable_w
0x15851Mirror, Device Write0x6000, cust, galaxian_sound_device, fire_enable_w
0x1586-0x15872Mirror, Device Write0x6000, cust, galaxian_sound_device, vol_w
0x16001Mirror, Read Port0x6000, DSW0
0x16011Mirror, Write0x6000, galaxold_nmi_enable_w
0x16041Mirror, Write0x6000, galaxold_stars_enable_w
0x16061Mirror, Write0x6000, galaxold_flip_screen_x_w
0x16071Mirror, Write0x6000, galaxold_flip_screen_y_w
0x16801Mirror, Device Read, Device Write0x6000, watchdog, watchdog_timer_device, reset_r, cust, galaxian_sound_device, pitch_w
0x1800-0x1BFF1024Mirror, Write, Shared0x6000, galaxold_videoram_w, videoram
0x1C00-0x1FFF1024Mirror, RAM0x6000,
0x2000-0x2FFF4096ROM
0x4000-0x4FFF4096ROM
0x6000-0x6FFF4096ROM
Memory Area:hunchbkg_io
Address RangeLengthFunctionDescription
0x00001Read NOP(// not used)
Memory Area:spcwarp
Address RangeLengthFunctionDescription
0x0000-0x0FFF4096ROM
0x1480-0x14BF64Mirror, RAM Write, Shared0x6000, galaxold_attributesram_w, attributesram
0x14C0-0x14FF64Mirror, Write Only, Shared0x6000, , spriteram
0x15001Mirror, Read Port0x6000, IN0
0x1500-0x15012Mirror, Write0x6000, galaxold_leds_w
0x15021Mirror, Write0x6000, galaxold_coin_lockout_w
0x15031Mirror, Write0x6000, galaxold_coin_counter_w
0x1504-0x15074Mirror, Device Write0x6000, cust, galaxian_sound_device, lfo_freq_w
0x15801Mirror, Read Port0x6000, IN1
0x1580-0x15878Mirror, Device Write0x6000, cust, galaxian_sound_device, sound_w
0x15831Mirror, Device Write0x6000, cust, galaxian_sound_device, noise_enable_w
0x15851Mirror, Device Write0x6000, cust, galaxian_sound_device, fire_enable_w
0x1586-0x15872Mirror, Device Write0x6000, cust, galaxian_sound_device, vol_w
0x16801Mirror, Device Read, Device Write0x6000, watchdog, watchdog_timer_device, reset_r, cust, galaxian_sound_device, pitch_w
0x17001Mirror, Read Port0x6000, DSW0
0x17011Mirror, Write0x6000, galaxold_nmi_enable_w
0x17041Mirror, Write0x6000, galaxold_stars_enable_w
0x17061Mirror, Write0x6000, galaxold_flip_screen_x_w
0x17071Mirror, Write0x6000, galaxold_flip_screen_y_w
0x1800-0x1BFF1024Mirror, Write, Shared0x6000, galaxold_videoram_w, videoram
0x1C00-0x1FFF1024Mirror, RAM0x6000,
0x2000-0x2FFF4096ROM
0x4000-0x4FFF4096ROM
0x6000-0x6FFF4096ROM
 

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
0x0000-0x07FF2048swarpb1h.binCRC(6ee3b5f7)
0x0800-0x0FFF2048swarpb1k.binCRC(da4cee6b)
Memory Area:maincpu
Address RangeLengthLabel/LocationDescription
0x0000-0x0FFF4096swarpt7f.binCRC(04d744e3)
0x2000-0x2FFF4096swarpt7h.binCRC(34a36536)
0x6000-0x6FFF4096swarpt7m.binBAD_DUMP CRC(a2dff6c8),ROMCMP reports "BADADDR xxxxxx-xxxxx". Observed data sequence repeated every 32 bytes
Memory Area:proms
Address RangeLengthLabel/LocationDescription
0x0000-0x001F32clr
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