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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.
Liberator (Atari, 1982)
Memory Area:liberatr_map
Address RangeLengthFunctionDescription
0x00001RAM, Sharedxcoord
0x0000-0x3FFF16384RAM Write, Sharedbitmap_w, bitmapram (/* overlapping for my convenience */)
0x00011RAM, Sharedycoord
0x00021Read/Writebitmap_xy_r, bitmap_xy_w
0x4000-0x403F64Readearom_r
0x50001Readport0_r
0x50011Read PortIN1
0x0001Button 2Active Low
0x0002Button 1Active Low
0x0004Button 2Active Low
0x0008Button 1Active Low
0x0010UnknownActive Low
0x0020Start 2Active Low
0x0040Start 1Active Low
0x0080CustomActive High
0x6000-0x600F16Write Only, Sharedbase_ram
0x6200-0x621F32Write Only, Sharedcolorram
0x64001Write NOP
0x66001Writeearom_control_w
0x68001Write Only, Sharedplanet_frame
0x6A001Device Writewatchdog, watchdog_timer_device, reset_w
0x6C00-0x6C012Writeled_w
0x6C041Writetrackball_reset_w
0x6C05-0x6C062Writecoin_counter_w
0x6C071Write Only, Sharedplanet_select
0x6E00-0x6E3F64Writeearom_w
0x7000-0x701F32Device Read/Writepokey2, pokey_device, read, write
0x7800-0x781F32Device Read/Writepokey1, pokey_device, read, write
0x8000-0xEFFF28672ROM
0xFFFA-0xFFFF6ROM
 

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
0x0000-0x0FFF4096136012.110CRC(6eb11221) (Fluke: CC7F)
0x0000-0x0FFF4096136012.110CRC(6eb11221) (Fluke: CC7F)
0x1000-0x1FFF4096136012.107CRC(8a616a63) (Fluke: 74BC)
0x1000-0x1FFF4096136012.107CRC(8a616a63) (Fluke: 74BC)
0x2000-0x2FFF4096136012.108CRC(3f8e4cf6) (Fluke: 69EB)
0x2000-0x2FFF4096136012.108CRC(3f8e4cf6) (Fluke: 69EB)
0x3000-0x3FFF4096136012.109CRC(dda0c0ef) (Fluke: CCB6)
0x3000-0x3FFF4096136012.109CRC(dda0c0ef) (Fluke: CCB6)
0x8000-0x8FFF4096136012.206CRC(1a0cb4a0) (Fluke: 34A4)
0x9000-0x9FFF4096136012.205CRC(2f071920) (Fluke: 95B1)
0xA000-0xAFFF4096136012.204CRC(bcc91827) (Fluke: 19CB)
0xB000-0xBFFF4096136012.203CRC(b558c3d4) (Fluke: B1E8)
0xC000-0xCFFF4096136012.202CRC(569ba7ea) (Fluke: 2344)
0xD000-0xDFFF4096136012.201CRC(d12cd6d0) (Fluke: A7C4)
0xE000-0xEFFF4096136012.200CRC(1e98d21a) (Fluke: F8D1)
Memory Area:proms
Address RangeLengthLabel/LocationDescription
0x0000-0x00FF256136012.021CRC(ffdcd7bc),write protect PROM (Fluke: F769)
0x0000-0x00FF256136012.021CRC(ffdcd7bc),write protect PROM (Fluke: F769)
0x0100-0x01FF256136012.022CRC(3353edce),sync PROM (Fluke: A01B)
0x0100-0x01FF256136012.022CRC(3353edce),sync PROM (Fluke: A01B)
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