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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.
Prebillian (Kaneko / Taito, 1986)
Memory Area:main_map
Address RangeLengthFunctionDescription
0x0000-0x7FFF32768ROM
0x8000-0xBFFF16384ROM Bankbank1
0xE000-0xE0FF256RAM, Sharedspriteram
0xE100-0xE7FF1792RAM
0xE800-0xEFFF2048RAM Write, Sharedsuperqix_videoram_w, videoram
0xF000-0xFFFF4096RAM
Memory Area:pbillian_port_map
Address RangeLengthFunctionDescription
0x0000-0x01FF512RAM Device Write, Sharedpalette, palette_device, write, palette (// 6116 sram near the jamma connector, "COLOR RAM" during POST)
0x04011Device Readaysnd, ay8910_device, data_r (// ay i/o ports connect to "SYSTEM" and "BUTTONS" inputs which includes mcu semaphore flags)
0x0402-0x04032Device Writeaysnd, ay8910_device, data_address_w
0x04081Read/Writehotsmash_Z80_mcu_r, hotsmash_Z80_mcu_w
0x04101Writepbillian_0410_w (/* Coin Counters, ROM bank, NMI enable, Flipscreen */)
0x04181Readnmi_ack_r
0x04191Write NOP(// ??? is this a watchdog, or something else? manual reset of mcu semaphores? manual nmi TRIGGER? used by prebillian)
0x041A1Writepbillian_sample_trigger_w
0x041B1Read NOP(// input related? but probably not used, may be 'sample has stopped playing' flag? used by prebillian)
 

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:cpu1
Address RangeLengthLabel/LocationDescription
0x0000-0x07FF2048mitsubishi__electric__7.mc68705p5s.7k
Memory Area:gfx1
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFF32768mitsubishi__electric__4.m5l27256k.1nCRC(9c08a072) (Fluke: 32F9)
0x8000-0xFFFF32768mitsubishi__electric__5.m5l27256k.1rCRC(2dd5b83f) (Fluke: DE15)
0x10000-0x17FFF32768mitsubishi__electric__6.m5l27256k.1tCRC(33b855b0) (Fluke: 0FC0)
Memory Area:maincpu
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFF32768mitsubishi__electric__1.m5l27256k.6bcCRC(d379fe23) (Fluke: DB23)
0x14000-0x17FFF16384mitsubishi__electric__2.m5l27128k.6dCRC(1af522bc) (Fluke: A375)
Memory Area:samples
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFF32768mitsubishi__electric__3.m5l27256k.7hCRC(3f9bc7f1) (Fluke: 6FAF)
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