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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.
Spelunker II (Irem (licensed from Broderbund), 1986)
Memory Area:kungfum_io_map
Address RangeLengthFunctionDescription
0x00001Read Port, Device WriteSYSTEM, irem_audio, irem_audio_device, cmd_w
0x00011Read Port, WriteP1, m62_flipscreen_w (/* + coin counters */)
0x00021Read PortP2
0x00031Read PortDSW1
0x0003SlowActive High
0x0002MediumActive High
0x0001FastActive High
0x0000FastestActive High
0x000cLivesActive High
0x00082Active High
0x000c3Active High
0x00044Active High
0x00005Active High
0x00041Read PortDSW2
Memory Area:ldrun_map
Address RangeLengthFunctionDescription
0x0000-0x7FFF32768ROM
0xC000-0xC0FF256Write Only, Sharedspriteram
0xD000-0xDFFF4096RAM Write, Sharedm62_tileram_w, m62_tileram
0xE000-0xEFFF4096RAM
Memory Area:spelunk2_map
Address RangeLengthFunctionDescription
0x0000-0x7FFF32768ROM
0x8000-0x8FFF4096ROM Bankbank1
0x9000-0x9FFF4096ROM Bankbank2
0xA000-0xBFFF8192RAM Write, Sharedm62_tileram_w, m62_tileram
0xC000-0xC0FF256Write Only, Sharedspriteram
0xC800-0xCFFF2048RAM Write, Sharedm62_textram_w, m62_textram
0xD0001Writem62_vscroll_low_w
0xD0011Writem62_hscroll_low_w
0xD0021Writespelunk2_gfxport_w
0xD0031Writespelunk2_bankswitch_w
0xE000-0xEFFF4096RAM
 

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
0x0000-0x7FFF32768sp2-r.1dCRC(c19fa4c9),tiles (Fluke: D634)
0x8000-0xFFFF32768sp2-r.3bCRC(366604af) (Fluke: 91B5)
0x10000-0x17FFF32768sp2-r.1bCRC(3a0c4d47) (Fluke: 5B59)
Memory Area:gfx2
Address RangeLengthLabel/LocationDescription
0x0000-0x3FFF16384sp2-b.4kCRC(6cb67a17),sprites (Fluke: B30F)
0x4000-0x7FFF16384sp2-b.4fCRC(e4a1166f) (Fluke: 186E)
0x8000-0xBFFF16384sp2-b.3nCRC(f59e8b76) (Fluke: 1088)
0xC000-0xFFFF16384sp2-b.4nCRC(fa65bac9) (Fluke: A4F7)
0x10000-0x13FFF16384sp2-b.4cCRC(1caf7013) (Fluke: ACCC)
0x14000-0x17FFF16384sp2-b.4eCRC(780a463b) (Fluke: F25E)
Memory Area:gfx3
Address RangeLengthLabel/LocationDescription
0x0000-0x07FF2048sp2-r.4lCRC(6a4b2d8b),chars (Fluke: 7D95)
0x4000-0x47FF2048sp2-r.4mCRC(e1368b61) (Fluke: 8C9C)
0x8000-0x87FF2048sp2-r.4pCRC(fc138e13) (Fluke: 191E)
Memory Area:irem_audio:iremsound
Address RangeLengthLabel/LocationDescription
0x8000-0xBFFF16384sp2-a.3dCRC(839ec7e2),adpcm data (Fluke: F64C)
0xC000-0xFFFF16384sp2-a.3fCRC(ad3ce898),6803 code (Fluke: E008)
Memory Area:maincpu
Address RangeLengthLabel/LocationDescription
0x0000-0x3FFF16384sp2-a.4eCRC(96c04bbb) (Fluke: E7F1)
0x4000-0x7FFF16384sp2-a.4dCRC(cb38c2ff) (Fluke: B41A)
0x10000-0x17FFF32768sp2-r.7dCRC(558837ea),banked at 9000-9fff (Fluke: 2BE9)
0x18000-0x1FFFF32768sp2-r.7cCRC(4b380162),banked at 9000-9fff (Fluke: 3EAD)
0x20000-0x23FFF16384sp2-r.7bCRC(7709a1fe),banked at 8000-8fff (Fluke: DEFA)
Memory Area:plds
Address RangeLengthLabel/LocationDescription
0x0000-0x0103260ampal16r4a-sp2-r-3h.binPAL is read protected
Memory Area:proms
Address RangeLengthLabel/LocationDescription
0x0000-0x01FF512sp2-r.1kCRC(31c1bcdc),chars red and green component (Fluke: CAC7)
0x0200-0x02FF256sp2-r.2kCRC(1cf5987e),chars blue component (Fluke: 1315)
0x0300-0x03FF256sp2-r.2jCRC(1acbe2a5),chars blue component (Fluke: 7B1D)
0x0400-0x04FF256sp2-b.1mCRC(906104c7),sprites red component (Fluke: 26D9)
0x0500-0x05FF256sp2-b.1nCRC(5a564c06),sprites green component (Fluke: A823)
0x0600-0x06FF256sp2-b.1lCRC(8f4a2e3c),sprites blue component (Fluke: 1EC8)
0x0720-0x091F512sp2-r.8jCRC(875cc442),unknown (Fluke: 126F)
0x0920-0x0A1F256sp2-b.6fCRC(34d88d3c),video timing - common to the other games (Fluke: 1735)
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