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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.
Joe & Mac Returns (Data East, 1994)
Memory Area:chainrec_map
Address RangeLengthFunctionDescription
0x0000-0x7FFFF524288ROM(// rom (32-bit))
0x200000-0x2000034Read PortIN0
0x201000-0x201FFF4096RAM, Sharedsystemram (// work ram (32-bit))
0x3C0000-0x3C00034Device Read/Write 8-bitokimusic, okim6295_device, read, write, 0x000000ff
0x400000-0x407FFF32768Read/Write, Sharedsimpl156_mainram_r, simpl156_mainram_w, mainram (// main ram?)
0x410000-0x411FFF8192Read/Writesimpl156_spriteram_r, simpl156_spriteram_w
0x420000-0x420FFF4096Device Read/Write 16-bit, Sharedpalette, palette_device, read, write, 0x0000ffff, palette
0x430000-0x4300034Read Port, WriteIN1, simpl156_eeprom_w
0x440000-0x44001F32Device Read/Writetilegen1, deco16ic_device, pf_control_dword_r, pf_control_dword_w
0x450000-0x451FFF8192Device Read/Writetilegen1, deco16ic_device, pf1_data_dword_r, pf1_data_dword_w
0x452000-0x453FFF8192Device Read/Writetilegen1, deco16ic_device, pf1_data_dword_r, pf1_data_dword_w
0x454000-0x455FFF8192Device Read/Writetilegen1, deco16ic_device, pf2_data_dword_r, pf2_data_dword_w
0x460000-0x461FFF8192Read/Writesimpl156_pf1_rowscroll_r, simpl156_pf1_rowscroll_w
0x464000-0x465FFF8192Read/Writesimpl156_pf2_rowscroll_r, simpl156_pf2_rowscroll_w
0x470000-0x4700034Read Only, Write NOP(// ??)
0x480000-0x4800034Device Read/Write 8-bitokisfx, okim6295_device, read, write, 0x000000ff
Memory Area:joemacr_map
Address RangeLengthFunctionDescription
0x0000-0x7FFFF524288ROM
0x100000-0x107FFF32768Read/Write, Sharedsimpl156_mainram_r, simpl156_mainram_w, mainram (// main ram)
0x110000-0x111FFF8192Read/Writesimpl156_spriteram_r, simpl156_spriteram_w
0x120000-0x120FFF4096Device Read/Write 16-bit, Sharedpalette, palette_device, read, write, 0x0000ffff, palette
0x130000-0x1300034Read Port, WriteIN1, simpl156_eeprom_w
0x140000-0x14001F32Device Read/Writetilegen1, deco16ic_device, pf_control_dword_r, pf_control_dword_w
0x150000-0x151FFF8192Device Read/Writetilegen1, deco16ic_device, pf1_data_dword_r, pf1_data_dword_w
0x152000-0x153FFF8192Device Read/Writetilegen1, deco16ic_device, pf1_data_dword_r, pf1_data_dword_w
0x154000-0x155FFF8192Device Read/Writetilegen1, deco16ic_device, pf2_data_dword_r, pf2_data_dword_w
0x160000-0x161FFF8192Read/Writesimpl156_pf1_rowscroll_r, simpl156_pf1_rowscroll_w
0x164000-0x165FFF8192Read/Writesimpl156_pf2_rowscroll_r, simpl156_pf2_rowscroll_w
0x170000-0x1700034Read Only, Write NOP(// ?)
0x180000-0x1800034Device Read/Write 8-bitokisfx, okim6295_device, read, write, 0x000000ff
0x1C0000-0x1C00034Device Read/Write 8-bitokimusic, okim6295_device, read, write, 0x000000ff
0x200000-0x2000034Read PortIN0
0x201000-0x201FFF4096RAM, Sharedsystemram (// work ram (32-bit))
 

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
0x0000-0x7FFFF52428801.u8lCRC(4da4a2c1) (Fluke: 40BB)
0x80000-0xFFFFF52428802.u8hCRC(642c08db) (Fluke: 1E23)
Memory Area:maincpu
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFFF52428805.u29CRC(74e9a158) (Fluke: 0589)
Memory Area:okimusic
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFFFF2097152mbn03CRC(70b71a2a),06.u45 (Fluke: A6EC)
0x0000-0x1FFFFF2097152mbn03CRC(70b71a2a),06.u45 (Fluke: A6EC)
0x0000-0x1FFFFF2097152mbn03CRC(70b71a2a),06.u45 (Fluke: A6EC)
Memory Area:okisfx
Address RangeLengthLabel/LocationDescription
0x0000-0x3FFFF262144mbn04CRC(dcbd4771),07.u46 (Fluke: 413E)
0x0000-0x3FFFF262144mbn04CRC(dcbd4771),07.u46 (Fluke: 413E)
0x0000-0x3FFFF262144mbn04CRC(dcbd4771),07.u46 (Fluke: 413E)
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