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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.
Laser Base (Hoei (Amstar license), 1981)
Memory Area:laserbas_io
Address RangeLengthFunctionDescription
0x00001Device Writecrtc, mc6845_device, address_w
0x00011Device Writecrtc, mc6845_device, register_w
0x00101Writevrambank_w
0x00201Read PortDSW
0x0000UprightActive High
0x0001CocktailActive High
0x0000EasyActive High
0x0002NormalActive High
0x000410kActive High
0x000030kActive High
0x0000OffActive High
0x0008OnActive High
0x00103C_1CActive High
0x00202C_1CActive High
0x00301C_1CActive High
0x0000Free_PlayActive High
0x00c01C_1CActive High
0x00801C_2CActive High
0x00401C_3CActive High
0x00001C_6CActive High
0x00feS RAM CHECKActive High
0x00fdD RAM CHECK FActive High
0x00fbD RAM CHECK BActive High
0x00f7ROM CHECKActive High
0x00efCRT INVERT CHECKActive High
0x00dfSWITCH CHECKActive High
0x00bfCOLOR CHECKActive High
0x007fSOUND CHECKActive High
0x0020-0x00234Writeout_w
0x00211Read PortINPUTS
0x0001Button 1Active Low
0x0002Button 2Active Low
0x0004Start 1Active Low
0x0008Start 2Active Low
0x0010Coin 2Active Low
0x0040Coin 1Active Low
0x0080Service 1Active Low
0x00221Readtrack_hi_r
0x00231Readtrack_lo_r (// AM_WRITE(test_w))
0x0040-0x00434Device Read/Writepit0, pit8253_device, read, write
0x0044-0x00474Device Read/Writepit1, pit8253_device, read, write
0x0080-0x009F32RAM Device Write, Sharedpalette, palette_device, write, palette
Memory Area:laserbas_memory
Address RangeLengthFunctionDescription
0x0000-0x3FFF16384ROM
0x4000-0xBFFF32768Read/Writevram_r, vram_w
0xC000-0xF7FF14336ROM
0xF800-0xFBFF1024Read/Write, Sharedprotram_r, protram_w, protram (/* protection device */)
0xFC00-0xFFFF1024RAM
 

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
0x0000-0x0FFF4096mb8532.1CRC(ef85e0c5) (Fluke: B7E6)
0x1000-0x1FFF4096mb8532.2CRC(0ba2236c) (Fluke: 6F5F)
0x2000-0x2FFF4096mb8532.3CRC(83998e0b) (Fluke: 0C85)
0x3000-0x3FFF4096mb8532.4CRC(00f9d909) (Fluke: C7B1)
0xC000-0xCFFF4096lb2532.5CRC(6459073e) (Fluke: A226)
0xD000-0xDFFF4096lb2532.6CRC(a2dc1e7e) (Fluke: CD1E)
0xE000-0xEFFF4096mb8532.7CRC(9d2148d7) (Fluke: 9838)
0xF000-0xF7FF2048mb8516.8CRC(623f558f) (Fluke: 220D)
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