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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.
Crystals Colours (JCD srl, 1998)
Memory Area:crystalc_map
Address RangeLengthFunctionDescription
0x0000-0x07FF2048RAM, Sharednvram (/* battery backed 6116 */)
0x10001Writeoutput_port_0_w (/* OUT0 */)
0x10011Writeoutput_port_1_w (/* OUT1 */)
0x2000-0x20089Readport2000_8_r (/* unknown... protection or data channels? */)
0x30001Read PortIN0 (/* IN0 */)
0x0001Remote x100Active Low
0x0002Stop 1Active Low
0x0004Cancella (CancelActive Low
0x0008Start (DealActive Low
0x0010Stop 5 / Risk (Half GambleActive Low
0x0020Statistica (StatsActive Low
0x0040ManagementActive Low
0x0080Stop 4 / Alta (HighActive Low
0x30011Read PortIN1 (/* IN1 */)
0x0001Stop 2 / Bassa (LowActive Low
0x0002Stop 3Active Low
0x0004TicketActive Low
0x0008HopperActive Low
0x0010UnknownActive Low
0x0020Coin 2Active Low
0x0040UnknownActive Low
0x0080Scarica (PayoutActive Low
0x30021Read PortIN2 (/* IN2 */)
0x0001Coin 1Active Low
0x0002UnknownActive Low
0x0004UnknownActive Low
0x0008UnknownActive Low
0x0010UnknownActive Low
0x0020UnknownActive Low
0x0040UnknownActive Low
0x0080UnknownActive Low
0x30031Read PortSW1 (/* DS1 */)
0x0003100Active High
0x0002200Active High
0x0001500Active High
0x00001000Active High
0x0004UnknownActive High
0x0004OffActive High
0x0000OnActive High
0x0008UnknownActive High
0x0008OffActive High
0x0000OnActive High
0x0010UnknownActive High
0x0010OffActive High
0x0000OnActive High
0x0000Ticket + CoinsActive High
0x0020Ticket onlyActive High
0x0040Coins onlyActive High
0x0060Ticket + CoinsActive High
0x0080UnknownActive High
0x0000OffActive High
0x0080OnActive High
0x50001Device Read/Writeoki, okim6295_device, read, write
0x6000-0x6FFF4096RAM Write, Sharedsnookr10_videoram_w, videoram
0x7000-0x7FFF4096RAM Write, Sharedsnookr10_colorram_w, colorram
0x8000-0xFFFF32768ROM
Memory Area:snookr10_map
Address RangeLengthFunctionDescription
0x0000-0x07FF2048RAM, Sharednvram (/* battery backed 6116 */)
0x10001Device Read/Writeoki, okim6295_device, read, write
0x30001Read PortIN0 (/* IN0 */)
0x0001Remote x100Active Low
0x0002Stop 1Active Low
0x0004Cancella (CancelActive Low
0x0008Start (DealActive Low
0x0010Stop 5 / Risk (Half GambleActive Low
0x0020Statistica (StatsActive Low
0x0040ManagementActive Low
0x0080Stop 4 / Alta (HighActive Low
0x30011Read PortIN1 (/* IN1 */)
0x0001Stop 2 / Bassa (LowActive Low
0x0002Stop 3Active Low
0x0004TicketActive Low
0x0008HopperActive Low
0x0010UnknownActive Low
0x0020Coin 2Active Low
0x0040UnknownActive Low
0x0080Scarica (PayoutActive Low
0x30021Read PortIN2 (/* IN2 */)
0x0001Coin 1Active Low
0x0002UnknownActive Low
0x0004UnknownActive Low
0x0008UnknownActive Low
0x0010UnknownActive Low
0x0020UnknownActive Low
0x0040UnknownActive Low
0x0080UnknownActive Low
0x30031Read PortSW1 (/* DS1 */)
0x0003100Active High
0x0002200Active High
0x0001500Active High
0x00001000Active High
0x0004UnknownActive High
0x0004OffActive High
0x0000OnActive High
0x0008UnknownActive High
0x0008OffActive High
0x0000OnActive High
0x0010UnknownActive High
0x0010OffActive High
0x0000OnActive High
0x0000Ticket + CoinsActive High
0x0020Ticket onlyActive High
0x0040Coins onlyActive High
0x0060Ticket + CoinsActive High
0x0080UnknownActive High
0x0000OffActive High
0x0080OnActive High
0x30041Readdsw_port_1_r (/* complement of DS1, bit 7 */)
0x50001Writeoutput_port_0_w (/* OUT0 */)
0x50011Writeoutput_port_1_w (/* OUT1 */)
0x6000-0x6FFF4096RAM Write, Sharedsnookr10_videoram_w, videoram
0x7000-0x7FFF4096RAM Write, Sharedsnookr10_colorram_w, colorram
0x8000-0xFFFF32768ROM
 

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:gfx1
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFF32768crystals_colours_2_l.425.u16CRC(834aba76)
0x8000-0xFFFF32768crystals_colours_3_l.425.u15CRC(7f14f66a)
Memory Area:maincpu
Address RangeLengthLabel/LocationDescription
0x8000-0xFFFF32768crystals_colours_1__(1.02).u2CRC(a803d857)
Memory Area:nvram
Address RangeLengthLabel/LocationDescription
0x0000-0x07FF2048crystals_colours_1.02_nvram.binCRC(20456301)
Memory Area:oki
Address RangeLengthLabel/LocationDescription
0x0000-0x3FFFF262144crystals_colours_4.u28CRC(ecc6b575)
0x0000-0x3FFFF262144crystals_colours_4.u28CRC(ecc6b575)
Memory Area:proms
Address RangeLengthLabel/LocationDescription
0x0000-0x01FF512am27s29pc.u17CRC(1af53eab)
0x0000-0x01FF512am27s29pc.u17CRC(1af53eab)
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