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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.
News (Poby, 1993)
Memory Area:news_map
Address RangeLengthFunctionDescription
0x0000-0x7FFF32768ROM(/* 4000-7fff is written to during startup, probably leftover code */)
0x8000-0x87FF2048RAM Write, Sharednews_fgram_w, fgram
0x8800-0x8FFF2048RAM Write, Sharednews_bgram_w, bgram
0x9000-0x91FF512RAM Device Write, Sharedpalette, palette_device, write, palette
0xC0001Read PortDSW
0x0003CoinageActive High
0x00003C_1CActive High
0x00012C_1CActive High
0x00031C_1CActive High
0x00021C_2CActive High
0x000cDifficultyActive High
0x000cEasyActive High
0x0008MediumActive High
0x0004HardActive High
0x0000HardestActive High
0x00101Active High
0x00002Active High
0x0020UnknownActive High
0x0020OffActive High
0x0000OnActive High
0xC0011Read PortINPUTS
0x0001Coin 1Active Low
0x0002Start 1Active Low
0x0004Joystick UpActive Low
0x0008Joystick DownActive Low
0x0010Joystick LeftActive Low
0x0020Joystick RightActive Low
0x0040Button 1Active Low
0x0080Button 2Active Low
0xC0021Device Read/Writeoki, okim6295_device, read, write
0xC0031Writenews_bgpic_w
0xE000-0xFFFF8192RAM
 

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:maincpu
Address RangeLengthLabel/LocationDescription
0x0000-0xFFFF65536newsa_virus.4CRC(74a257da) (Fluke: ED1C)
Memory Area:oki
Address RangeLengthLabel/LocationDescription
0x0000-0x3FFFF262144virus.1CRC(41f5935a) (Fluke: 288F)
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