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:astrowar_mem_map
Address RangeLengthFunctionDescription
0x0000-0x13FF5120ROM
0x1400-0x14FF256Mirror, RAM0x6000,
0x1500-0x15FF256Mirror, Device Read/Write0x6000, s2636_0, s2636_device, read_data, write_data
0x1800-0x1BFF1024Mirror, Read, Write, Shared0x6000, cvs_video_or_color_ram_r, galaxia_video_w, video_ram
0x1C00-0x1CFF256Mirror, RAM, Shared0x6000, , bullet_ram
0x2000-0x33FF5120ROM
Memory Area:galaxia_io_map
Address RangeLengthFunctionDescription
0x00001Read/Writegalaxia_collision_r, galaxia_ctrlport_w
0x00001Read/Writegalaxia_collision_clear, galaxia_dataport_w
0x00001Read PortSENSE
0x00001Write, Read Portgalaxia_scroll_w, IN0
0x00021Read PortIN1
0x00051Read NOP
0x00061Read PortDSW0
0x00071Read PortDSW1
0x00AC1Read 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:gfx1
Address RangeLengthLabel/LocationDescription
0x0000-0x03FF1024astro.1dCRC(6053f834) (Fluke: 855B)
0x0400-0x07FF1024astro.3dCRC(822505aa) (Fluke: 86AE)
Memory Area:maincpu
Address RangeLengthLabel/LocationDescription
0x0000-0x03FF1024astro.8hCRC(b0ec246c) (Fluke: FE9F)
0x0400-0x07FF1024astro.10hCRC(090d360f) (Fluke: 3765)
0x0800-0x0BFF1024astro.11hCRC(72ab1378) (Fluke: 383E)
0x0C00-0x0FFF1024astro.13hCRC(2dc4c895) (Fluke: BA99)
0x1000-0x13FF1024astro.8iCRC(ab87fbfc) (Fluke: 5562)
0x2000-0x23FF1024astro.10iCRC(533675c1) (Fluke: 8684)
0x2400-0x27FF1024astro.11iCRC(59cf8901) (Fluke: 0CAC)
0x2800-0x2BFF1024astro.13iCRC(5149c121) (Fluke: 077D)
0x2C00-0x2FFF1024astro.11lCRC(29f52f57) (Fluke: A6A3)
0x3000-0x33FF1024astro.13lCRC(882cdb87) (Fluke: 4D98)
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