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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.
Caliber 50 (Athena / Seta, 1989)
Memory Area:calibr50_map
Address RangeLengthFunctionDescription
0x0000-0x9FFFF655360ROM(// ROM)
0x100000-0x1000078Read NOP(// ? (same as a00010-a00017?))
0x200000-0x200FFF4096RAM(// NVRAM)
0x300000-0x3000012Write NOP(// ? (random value))
0x300000-0x3000012Read NOP(// ? (value's read but not used))
0x400000-0x4000012Device Readwatchdog, watchdog_timer_device, reset16_r
0x500000-0x5000012Write NOP(// ?)
0x600000-0x6000034Readseta_dsw_r (// DSW)
0x700000-0x7003FF1024RAM, Sharedpaletteram (// Palette)
0x800000-0x8000056Write Only, Sharedvctrl_0 (// VRAM Ctrl)
0x900000-0x903FFF16384RAM Write, Sharedseta_vram_0_w, vram_0 (// VRAM)
0x904000-0x904FFF4096RAM(//)
0xA00000-0xA0001926Readcalibr50_ip_r (// Input Ports)
0xB00000-0xB000012Device Read 8-bit, Writesoundlatch2, generic_latch_8_device, read, 0x00ff, calibr50_soundlatch_w (// From Sub CPU)
0xD00600-0xD006078RAM, Device Read/Writespritegen, seta001_device, spritectrl_r16, spritectrl_w16
0xE00000-0xE03FFF16384RAM, Device Read/Writespritegen, seta001_device, spritecode_r16, spritecode_w16 (// Sprites Code + X + Attr)
0xFF0000-0xFFFFFF65536RAM(// RAM)
Memory Area:calibr50_sub_map
Address RangeLengthFunctionDescription
0x0000-0x1FFF8192Device Read/Writex1snd, x1_010_device, read ,write (// Sound)
0x40001Device Readsoundlatch, generic_latch_8_device, read (// From Main CPU)
0x40001Writesub_bankswitch_w (// Bankswitching)
0x8000-0xBFFF16384ROM Bankbank1 (// Banked ROM)
0xC0001Writecalibr50_soundlatch2_w (// To Main CPU)
0xC000-0xFFFF16384ROM(// ROM)
 

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:gfx2
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFFF524288uh001010.u3xCRC(f986577a) (Fluke: 8B59)
0x80000-0xFFFFF524288uh001011.u50CRC(08620052) (Fluke: F391)
Memory Area:sub
Address RangeLengthLabel/LocationDescription
0x4000-0x43FFF262144uh001005.u61CRC(4a54c085) (Fluke: 19DE)
Memory Area:x1snd
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFFF524288uh001013.u60CRC(09ec0df6) (Fluke: 8D1D)
0x80000-0xFFFFF524288uh001012.u46CRC(bb996547) (Fluke: 5B7F)
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