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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.
Sigma Poker 2000 (Sigma Inc., 1998)
Memory Area:ampoker2_io_map
Address RangeLengthFunctionDescription
0x0008-0x000F8Write NOP(/* inexistent in the real hardware */)
0x00101Read PortIN0
0x0001UnknownActive Low
0x0002UnknownActive Low
0x0004UnknownActive Low
0x0008OffActive High
0x0000OnActive High
0x0010UnknownActive Low
0x0020UnusedActive Low
0x0040UnusedActive Low
0x0080UnusedActive Low
0x00111Read PortIN1
0x0001UnknownActive Low
0x0002Poker Hold 1Active Low
0x0004Operator KeyActive Low
0x0008OffActive High
0x0000OnActive High
0x0010Poker Hold 4Active Low
0x0020UnusedActive Low
0x0040UnusedActive Low
0x0080UnusedActive Low
0x00121Read PortIN2
0x0001UnknownActive Low
0x0002UnknownActive Low
0x0004UnknownActive Low
0x0008OffActive High
0x0000OnActive High
0x0010UnknownActive Low
0x0020UnusedActive Low
0x0040UnusedActive Low
0x0080UnusedActive Low
0x00131Read PortIN3
0x0001UnknownActive Low
0x0002UnknownActive Low
0x0004Supervisor KeyActive Low
0x0008OffActive High
0x0000OnActive High
0x0010Half GambleActive Low
0x0020UnusedActive Low
0x0040UnusedActive Low
0x0080UnusedActive Low
0x00141Read PortIN4
0x0001UnknownActive Low
0x0002UnknownActive Low
0x0004Poker Hold 2Active Low
0x0008OffActive High
0x0000OnActive High
0x0010Deal / TakeActive Low
0x0020UnusedActive Low
0x0040UnusedActive Low
0x0080UnusedActive Low
0x00151Read PortIN5
0x0001UnknownActive Low
0x0002UnknownActive Low
0x0004UnknownActive Low
0x0008OffActive High
0x0000OnActive High
0x0010Poker Hold 3Active Low
0x0020UnusedActive Low
0x0040UnusedActive Low
0x0080UnusedActive Low
0x00161Read PortIN6
0x0001UnknownActive Low
0x0002Gamble BetActive Low
0x0004Poker Hold 5Active Low
0x0008OffActive High
0x0000OnActive High
0x0010UnknownActive Low
0x0020UnusedActive Low
0x0040UnusedActive Low
0x0080UnusedActive Low
0x00171Read PortIN7
0x0001UnknownActive Low
0x0002Credits InActive Low
0x0004UnknownActive Low
0x0008OffActive High
0x0000OnActive High
0x0010Clear CreditsActive Low
0x0020UnusedActive Low
0x0040UnusedActive Low
0x0080UnusedActive Low
0x00301Writeampoker2_port30_w (/* see write handlers */)
0x00311Writeampoker2_port31_w (/* see write handlers */)
0x00321Writeampoker2_port32_w (/* see write handlers */)
0x00331Writeampoker2_port33_w (/* see write handlers */)
0x00341Writeampoker2_port34_w (/* see write handlers */)
0x00351Writeampoker2_port35_w (/* see write handlers */)
0x00361Writeampoker2_port36_w (/* see write handlers */)
0x00371Writeampoker2_watchdog_reset_w
0x0038-0x00392Device Writeaysnd, ay8910_device, address_data_w
0x003A1Device Readaysnd, ay8910_device, data_r
Memory Area:ampoker2_map
Address RangeLengthFunctionDescription
0x0000-0xBFFF49152ROM
0xC000-0xCFFF4096RAM, Sharednvram
0xE000-0xEFFF4096RAM Write, Sharedampoker2_videoram_w, videoram
 

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
0x0000-0xFFFF65536sigma2k.u47CRC(3ed7b9df) (Fluke: EAA2)
Memory Area:maincpu
Address RangeLengthLabel/LocationDescription
0x0000-0xFFFF65536sigma2k.u6CRC(608d1771) (Fluke: 0DF1)
Memory Area:proms
Address RangeLengthLabel/LocationDescription
0x0000-0x01FF51282s147an_s2k.u48CRC(715361cc) (Fluke: 1C14)
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