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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.
Match Games (Merit, 1981)
Memory Area:main_map
Address RangeLengthFunctionDescription
0x0000-0x2FFF12288ROM
0x3800-0x38FF256RAM, Sharednvram (/* NVRAM = 2x SCM5101E */)
0x4000-0x47FF2048RAM, Sharedvideo (/* 4x MM2114N-3 */)
0x80001Writeoutport0_w
0x80001Read PortSW1
0x000020 Coins/1 CreditActive High
0x000110 Coins/1 CreditActive High
0x00028C_1CActive High
0x00035C_1CActive High
0x00044C_1CActive High
0x00055 Coins/2 CreditsActive High
0x00062C_1CActive High
0x00071C_1CActive High
0x000f1C_1CActive High
0x000e1C_2CActive High
0x000d2C_5CActive High
0x000c1C_4CActive High
0x000b1C_5CActive High
0x000a1C_8CActive High
0x00091 Coin/10 CreditsActive High
0x00081 Coin/20 CreditsActive High
0x0000The White KnightActive High
0x0010Wild BullsActive High
0x0020PharaohsActive High
0x0030The Frog PondActive High
0x00401Active High
0x00c010Active High
0x008020Active High
0x000050Active High
0x80011Writeoutport1_w
0x80011Readmixport_r (/* DIP switch bank 2 + a sort of watchdog */)
0x80021Read PortIN1
0x0001Gamble BetActive Low
0x0002Gamble DealActive Low
0x0004Cancel DiscardsActive Low
0x0008Stand (Hold all CardsActive Low
0x0010Discard 1Active Low
0x0020Discard 2Active Low
0x0040Discard 3Active Low
0x0080Discard 4Active Low
0x80021Writeoutport2_w
0x80031Writeoutport3_w
0x80031Read PortIN2
0x0001Discard 5Active Low
0x0002StatsActive Low
0x0004Gamble PayoutActive Low
0x0008Coin 1Active Low
0x0010Coin 2Active Low
0x0020SettingsActive Low
0x0040UnknownActive Low
0x0080UnknownActive Low
0x80041Writeoutport4_w
0x80051Writeoutport5_w
0x80061Writeoutport6_w
0x80071Writeoutport7_w
 

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
0x0000-0x07FF2048u68_cgm0_mk2716j.binCRC(3e4148e3) (Fluke: 72BA)
0x0800-0x0FFF2048u67_cgm1_mk2716j.binCRC(c66c30ed) (Fluke: 5214)
0x1000-0x17FF2048u66_cgm2_mk2716j.binCRC(3b6b98d3) (Fluke: 8FED)
0x1800-0x1FFF2048u65_cgm3_mk2716j.binCRC(d61ae9d1) (Fluke: E12B)
Memory Area:maincpu
Address RangeLengthLabel/LocationDescription
0x0000-0x07FF2048u13_mlt10_mk2716j.binCRC(ce2da863) (Fluke: 6972)
0x0800-0x0FFF2048u14_mlt11_mk2716j.binCRC(1382d166) (Fluke: 660C)
0x1000-0x17FF2048u15_mlt12_mk2716j.binCRC(eb12716c) (Fluke: A205)
0x1800-0x1FFF2048u16_mlt13_mk2716j.binCRC(e2d80ff0) (Fluke: 94D3)
0x2000-0x27FF2048u17_mlt14_mk2716j.binCRC(36efcdf1) (Fluke: 6B6D)
0x2800-0x2FFF2048u18_mlt15_mk2716j.binCRC(7701c7df) (Fluke: 7A81)
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