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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.
Petaco (Juegos Populares, 1984)
Memory Area:jp_map
Address RangeLengthFunctionDescription
0x0000-0x3FFF16384ROM
0x4000-0x47FF2048Mirror, RAM, Shared0x1800, , nvram (// ram-"5128" battery backed)
0x60001Mirror, Device Write0x1ffc, ay, ay8910_device, address_w
0x60011Mirror, Device Read0x1ffc, ay, ay8910_device, data_r
0x60021Mirror, Device Write0x1ffc, ay, ay8910_device, data_w
0xA0001Mirror, Write0x1ff8, sol_w
0xA0011Mirror, Write0x1ff8, disp_w
0xA002-0xA0076Mirror, Write0x1ff8, lamp1_w
0xC000-0xC0078Mirror, Write0x1ff8, lamp2_w
 

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:maincpu
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFF8192petaco1.cpuCRC(f4e09939)
0x2000-0x3FFF8192petaco2.cpuCRC(d29a59ea)
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