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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.
New York Joker (High Video, 2000)
Memory Area:nyjoker_io
Address RangeLengthFunctionDescription
0x0000-0x00012Writewrite1_w (// lamps)
0x0002-0x00032Write NOP(// alternate coin counter (bits 0 and 2))
0x0004-0x00052Writenyj_write2_w (// coin and note counter)
0x0008-0x00092Writetv_ncf_oki6376_w
0x000A-0x000B2Writetv_ncf_oki6376_st_w
0x000C-0x000D2Read PortIN0
0x0001Gamble TakeActive Low
0x0002Start 1Active Low
0x0004Poker Hold 2Active Low
0x0008Poker Hold 4Active Low
0x0010RiskActive Low
0x0020Hold 3 / ChooseActive Low
0x0040Hold 5 / BetActive Low
0x0080Hold 1 / MagicActive Low
0x000E-0x000F2Read PortDSW
0x0000OffActive High
0x0001OnActive High
0x0002OffActive High
0x0000OnActive High
0x0000OffActive High
0x0004OnActive High
0x0000OffActive High
0x0008OnActive High
0x0000OffActive High
0x0010OnActive High
0x0000OffActive High
0x0020OnActive High
0x0000OffActive High
0x0040OnActive High
0x0000OffActive High
0x0080OnActive High
0x0010-0x00112Read PortIN2
0x0001Coin 1Active Low
0x0002Coin 2Active Low
0x0004Coin 3Active Low
0x0008Coin 4Active Low
0x0010Note 1Active Low
0x0020Note 2Active Low
0x0040Note 3Active Low
0x0080Note 4Active Low
0x0012-0x00132Read PortIN3
0x0001BookkeepingActive Low
0x0002KeyActive Low
0x0004TicketActive Low
0x0008UnknownActive Low
0x0010Hopper 1Active Low
0x0020Hopper 2Active Low
0x0040Level 2Active Low
0x0080Level 1Active Low
0x0014-0x00152Readtv_ncf_read1_r
0x0020-0x00212Write NOP
0x0030-0x00312Device Write 8-bitramdac, ramdac_device, index_w, 0x00ff
0x0032-0x00332Device Write 8-bitramdac, ramdac_device, mask_w, 0x00ff
0x0034-0x00352Device Write 8-bitramdac, ramdac_device, pal_w, 0x00ff
Memory Area:nyjoker_map
Address RangeLengthFunctionDescription
0x0000-0x03FF1024RAM(/*irq vector area*/)
0x0400-0x3FFF15360RAM, Sharednvram
0x10000-0x1FFFF65536RAM, Sharedblit_ram (/*blitter ram*/)
0x40000-0xBFFFF524288ROM, Regionuser1,0x40000
0xC0000-0xFFFFF262144ROM, Regionboot_prg,0
Memory Area:tv_vcf_io
Address RangeLengthFunctionDescription
0x0000-0x00012Writewrite1_w (// lamps)
0x0006-0x00072Writetv_oki6376_w
0x0008-0x00092Readread0_r
0x000A-0x000B2Readread1_r
0x000C-0x000D2Readread2_r
0x0010-0x00112Device Write 8-bitramdac, ramdac_device, index_w, 0x00ff
0x0012-0x00132Device Write 8-bitramdac, ramdac_device, mask_w, 0x00ff
0x0014-0x00152Device Write 8-bitramdac, ramdac_device, pal_w, 0x00ff
0x0030-0x00312Write, Readtv_vcf_bankselect_w, tv_oki6376_r
Memory Area:tv_vcf_map
Address RangeLengthFunctionDescription
0x0000-0x03FF1024RAM(/*irq vector area*/)
0x0400-0x3FFF15360RAM, Sharednvram
0x40000-0x4FFFF65536RAM, Sharedblit_ram (/*blitter ram*/)
0x80000-0xBFFFF262144ROM Bankbank1
0xC0000-0xFFFFF262144ROM, Regionboot_prg,0
 

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:nvram
Address RangeLengthLabel/LocationDescription
0x0000-0x3BFF15360nyjoker_nvramCRC(5ed3d184)
Memory Area:oki
Address RangeLengthLabel/LocationDescription
0x0000-0x7FFFF524288ny2.ic25CRC(eeea7f4d)
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