Memory Area:oki
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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.
Table Tennis Champions (Gamart, 1995)
Memory Area:ttchamp_io
Address RangeLengthFunctionDescription
0x0000-0x00012Write NOP(// startup only, nmi enable?)
0x0002-0x00032Read PortSYSTEM
0x0001Coin 1Active Low
0x0002Coin 2Active Low
0x0008OffActive High
0x0000OnActive High
0x0010OffActive High
0x0000OnActive High
0x0020OffActive High
0x0000OnActive High
0x0040OffActive High
0x0000OnActive High
0x0080OffActive High
0x0000OnActive High
0x0100OffActive High
0x0000OnActive High
0x0200OffActive High
0x0000OnActive High
0x0400OffActive High
0x0000OnActive High
0x0800OffActive High
0x0000OnActive High
0x1000OffActive High
0x0000OnActive High
0x2000OffActive High
0x0000OnActive High
0x4000OffActive High
0x0000OnActive High
0x8000OffActive High
0x0000OnActive High
0x0004-0x00052Read PortP1_P2
0x0001Joystick UpActive Low
0x0002Joystick DownActive Low
0x0004Joystick LeftActive Low
0x0008Joystick RightActive Low
0x0010Button 1Active Low
0x0020Button 2Active Low
0x0040Button 3Active Low
0x0080Start 1Active Low
0x0100Joystick UpActive Low
0x0200Joystick DownActive Low
0x0400Joystick LeftActive Low
0x0800Joystick RightActive Low
0x1000Button 1Active Low
0x2000Button 2Active Low
0x4000Button 3Active Low
0x8000Start 2Active Low
0x0006-0x00072Device Read/Write 8-bitoki, okim6295_device, read, write, 0x00ff
0x0008-0x00092Writepaldat_w
0x000A-0x000B2Writepaloff_w (// bit 0x8000 sometimes gets set, why?)
0x0010-0x00112Writeport10_w
0x0018-0x00192Readblit_start_r (// read before using bus write offset as blit parameters)
0x001E-0x001F2Readport1e_r (// read before some blit operations (but not all))
0x0020-0x00212Writeport20_w
0x0034-0x00352Read/Writepic_r, pic_w
0x0062-0x00632Writeport62_w
Memory Area:ttchamp_map
Address RangeLengthFunctionDescription
0x0000-0xFFFFF1048576Read/Writemem_r, mem_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.   
0x0000-0x427F17024pic16c84.romBAD_DUMP CRC(900f2ef8) (Fluke: F83B)
Address RangeLengthLabel/LocationDescription
0x0000-0x3FFFF26214427c020.1CRC(e2c4fe95) (Fluke: 89BF)
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