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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.
Scooter Shooter (Konami, 1985)
Memory Area:scotrsht_map
Address RangeLengthFunctionDescription
0x0000-0x07FF2048RAM Write, Sharedcolorram_w, colorram
0x0800-0x0FFF2048RAM Write, Sharedvideoram_w, videoram
0x1000-0x10BF192RAM, Sharedspriteram (/* sprites */)
0x10C0-0x1FFF3904RAM(/* work ram */)
0x2000-0x201F32RAM, Sharedscroll (/* scroll registers */)
0x20401Write NOP
0x20411Write NOP
0x20421Write NOP(/* it should be -> bit 2 = scroll direction like in jailbrek, but it's not used */)
0x20431Writecharbank_w
0x20441Writectrl_w
0x30001Writepalettebank_w
0x31001Writesoundlatch_w
0x31001Read PortDSW2
0x0003LivesActive High
0x00032Active High
0x00023Active High
0x00014Active High
0x00005Active High
0x0004OffActive High
0x0000OnActive High
0x0008Bonus_LifeActive High
0x000830k 110k 80k+Active High
0x000040k 120k 90k+Active High
0x0030DifficultyActive High
0x0030EasyActive High
0x0020NormalActive High
0x0010HardActive High
0x0000HardestActive High
0x0080Demo_SoundsActive High
0x0080OffActive High
0x0000OnActive High
0x32001Read PortDSW3
0x0001Flip_ScreenActive High
0x0001OffActive High
0x0000OnActive High
0x0002OffActive High
0x0000OnActive High
0x32001Write NOP(/* it writes 0, 1 */)
0x33001Device Writewatchdog, watchdog_timer_device, reset_w
0x33001Read PortSYSTEM
0x0001Coin 1Active Low
0x0002Coin 2Active Low
0x0004Service 1Active Low
0x0008Start 1Active Low
0x0010Start 2Active Low
0x0020UnusedActive Low
0x0040UnusedActive Low
0x0080UnusedActive Low
0x33011Read PortP1
0x33021Read PortP2
0x33031Read PortDSW1
0x4000-0xFFFF49152ROM
Memory Area:scotrsht_sound_map
Address RangeLengthFunctionDescription
0x0000-0x3FFF16384ROM
0x4000-0x43FF1024RAM
0x80001Device Readsoundlatch, generic_latch_8_device, read
Memory Area:scotrsht_sound_port
Address RangeLengthFunctionDescription
0x0000-0x00012Device Read/Writeymsnd, ym2203_device, read, write
 

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:audiocpu
Address RangeLengthLabel/LocationDescription
0x0000-0x3FFF16384gx545_g01_8c.binCRC(46a7cc65) (Fluke: 67A3)
Memory Area:gfx1
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFF32768gx545_g05_5f.binCRC(856c349c),characters (Fluke: B95C)
Memory Area:gfx2
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFF32768gx545_g06_6f.binCRC(14ad7601),sprites (Fluke: 3B7C)
0x8000-0xFFFF32768gx545_h04_4f.binCRC(c06c11a3) (Fluke: DDC4)
Memory Area:maincpu
Address RangeLengthLabel/LocationDescription
0x8000-0xBFFF16384gx545_g03_12c.binCRC(b808e0d3) (Fluke: 2A29)
0xC000-0xFFFF16384gx545_g02_10c.binCRC(b22c0586) (Fluke: FA)
Memory Area:proms
Address RangeLengthLabel/LocationDescription
0x0000-0x00FF256gx545_6301_1f.binCRC(f584586f),red (Fluke: 3853)
0x0100-0x01FF256gx545_6301_2f.binCRC(ad464db1),green (Fluke: 21E2)
0x0200-0x02FF256gx545_6301_3f.binCRC(bd475d23),blue (Fluke: B1E8)
0x0300-0x03FF256gx545_6301_7f.binCRC(2b0cd233),char lookup (Fluke: 95D4)
0x0400-0x04FF256gx545_6301_8f.binCRC(c1c7cf58),sprites lookup (Fluke: 1F1D)
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