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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.
Reikai Doushi (Home Data, 1988)
Memory Area:reikaids_map
Address RangeLengthFunctionDescription
0x0000-0x3FFF16384RAM Write, Sharedreikaids_videoram_w, videoram
0x4000-0x5FFF8192RAM
0x6000-0x6FFF4096RAM(/* work RAM */)
0x78001RAM(/* behaves as normal RAM */)
0x78011Read PortIN0
0x0001Joystick UpActive Low
0x0002Joystick DownActive Low
0x0004Joystick LeftActive Low
0x0008Joystick RightActive Low
0x0010Button 1Active Low
0x0020Button 2Active Low
0x0040Button 3Active Low
0x0080Start 1Active Low
0x78021Read PortIN1
0x0001Joystick UpActive Low
0x0002Joystick DownActive Low
0x0004Joystick LeftActive Low
0x0008Joystick RightActive Low
0x0010Button 1Active Low
0x0020Button 2Active Low
0x0040Button 3Active Low
0x0080Start 2Active Low
0x78031Readreikaids_io_r (// coin, blitter, upd7807)
0x7FF0-0x7FFD14Write Only, Sharedvreg
0x7FFE1Writereikaids_blitter_bank_w
0x7FFF1Writereikaids_blitter_start_w
0x80001Writebankswitch_w
0x8000-0xBFFF16384ROM Bankbank1
0x80021Writereikaids_snd_command_w
0x80051Writereikaids_gfx_bank_w
0x80061Writehomedata_blitter_param_w
0xC000-0xFFFF16384ROM
Memory Area:reikaids_upd7807_io_map
Address RangeLengthFunctionDescription
0x00001Writereikaids_upd7807_portc_w
0x00001Device Writedac, dac_byte_interface, write
0x00001Read/Writereikaids_upd7807_porta_r, reikaids_upd7807_porta_w
0x00001Readreikaids_snd_command_r
Memory Area:reikaids_upd7807_map
Address RangeLengthFunctionDescription
0x0000-0xFEFF65280ROM Bankbank2 (/* External ROM (Banked) */)
0xFF00-0xFFFF256RAM(/* Internal RAM */)
 

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
0x0000-0x3FFFF262144x82a04.binCRC(52c9028a) (Fluke: AA86)
Memory Area:gfx1
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFFF524288x82a13.binCRC(954c8844) (Fluke: 97C8)
0x80000-0xFFFFF524288x82a14.binCRC(a748305e) (Fluke: CDB4)
0x100000-0x17FFFF524288x82a15.binCRC(c50f7047) (Fluke: 2E10)
0x180000-0x1FFFFF524288x82a16.binCRC(b270094a) (Fluke: F4C1)
Memory Area:gfx2
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFFF524288x82a09.binCRC(c496b187) (Fluke: 96D6)
0x80000-0xFFFFF524288x82a10.binCRC(4243fe28) (Fluke: AB88)
Memory Area:gfx3
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFFF524288x82a08.binCRC(51cfd790) (Fluke: 7C75)
Memory Area:gfx4
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFFF524288x82a05.binCRC(fb65e0e0) (Fluke: FB41)
Memory Area:maincpu
Address RangeLengthLabel/LocationDescription
0x10000-0x2BFFF114688j82c01.binCRC(50fcc451) (Fluke: CA4F)
Memory Area:user1
Address RangeLengthLabel/LocationDescription
0x0000-0x3FFFF262144x82a02.binCRC(90fe700f) (Fluke: 3F48)
Memory Area:user2
Address RangeLengthLabel/LocationDescription
0x0000-0x00FF256x82a19.binCRC(7ed947b4) (Fluke: 2040)
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