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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.
Formation Z (Jaleco, 1984)
Memory Area:main_map
Address RangeLengthFunctionDescription
0x0000-0x07FF2048RAM, Sharedmainram (// main RAM)
0x01A21Writeaeroboto_1a2_w (// affects IRQ line (more protection?))
0x0800-0x08FF256RAM(// tile color buffer; copied to 0x2000)
0x0900-0x09FF256Write Only(// a backup of default tile colors)
0x1000-0x17FF2048RAM Write, Sharedaeroboto_videoram_w, videoram (// tile RAM)
0x1800-0x183F64RAM, Sharedhscroll (// horizontal scroll regs)
0x1840-0x27FF4032Write NOP(// cleared during custom LSI test)
0x2000-0x20FF256RAM Write, Sharedaeroboto_tilecolor_w, tilecolor (// tile color RAM)
0x2800-0x28FF256RAM, Sharedspriteram (// sprite RAM)
0x2900-0x2FFF1792Write NOP(// cleared along with sprite RAM)
0x29731Readaeroboto_2973_r (// protection read)
0x30001Read/Writeaeroboto_in0_r, aeroboto_3000_w
0x30011Read Port, Device WriteDSW1, soundlatch, generic_latch_8_device, write
0x0003LivesActive High
0x00003Active High
0x00014Active High
0x00025Active High
0x0003Infinite (Cheat)Active High
0x000cBonus_LifeActive High
0x000c30000Active High
0x000840000Active High
0x000470000Active High
0x0000100000Active High
0x0020Demo_SoundsActive High
0x0000OffActive High
0x0020OnActive High
0x0040CabinetActive High
0x0040UprightActive High
0x0000CocktailActive High
0x0080Coin 1Active Low
0x30021Read Port, Device WriteDSW2, soundlatch2, generic_latch_8_device, write
0x0007CoinageActive High
0x00075C_1CActive High
0x00054C_1CActive High
0x00033C_1CActive High
0x00012C_1CActive High
0x00001C_1CActive High
0x00021C_2CActive High
0x00041C_3CActive High
0x00061C_4CActive High
0x0018DifficultyActive High
0x0000EasyActive High
0x0008NormalActive High
0x0010MediumActive High
0x0018HardActive High
0x30031Write Only, Sharedvscroll
0x30041Read, Write Only, Sharedaeroboto_201_r, , starx
0x30051Write Only, Sharedstary (// usable but probably wrong)
0x30061Write Only, Sharedbgcolor
0x38001Readaeroboto_irq_ack_r (// watchdog or IRQ ack)
0x4000-0xFFFF49152ROM(// main ROM)
Memory Area:sound_map
Address RangeLengthFunctionDescription
0x0000-0x0FFF4096RAM
0x9000-0x90012Device Writeay1, ay8910_device, address_data_w
0x90021Device Readay1, ay8910_device, data_r
0xA000-0xA0012Device Writeay2, ay8910_device, address_data_w
0xA0021Device Readay2, ay8910_device, data_r
0xF000-0xFFFF4096ROM
 

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
0xF000-0xFFFF4096format_z.9CRC(6b9215ad) (Fluke: DDFE)
Memory Area:gfx1
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFF8192format_z.5CRC(ba50be57),characters (Fluke: C663)
Memory Area:gfx2
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFF8192format_z.4CRC(910375a0),characters (Fluke: 5B01)
Memory Area:gfx3
Address RangeLengthLabel/LocationDescription
0x0000-0x0FFF4096format_z.1CRC(5739afd2),sprites (Fluke: D15D)
0x1000-0x1FFF4096format_z.2CRC(3a821391),sprites (Fluke: 6CD3)
0x2000-0x2FFF4096format_z.3CRC(7d1aec79),sprites (Fluke: DF48)
Memory Area:maincpu
Address RangeLengthLabel/LocationDescription
0x4000-0x7FFF16384format_z.8CRC(81a2416c) (Fluke: F9BF)
0x8000-0xBFFF16384format_z.7CRC(986e6052) (Fluke: 93CB)
0xC000-0xFFFF16384format_z.6CRC(baa0d745) (Fluke: 02D0)
Memory Area:proms
Address RangeLengthLabel/LocationDescription
0x0000-0x00FF25610cCRC(b756dd6d) (Fluke: B597)
0x0100-0x01FF25610bCRC(00df8809) (Fluke: 5809)
0x0200-0x02FF25610aCRC(e8733c8f) (Fluke: CD5F)
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