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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.
Parallel Turn (Jaleco, 1984)
Memory Area:main_map
Address RangeLengthFunctionDescription
0x0000-0x7FFF32768ROM
0xC000-0xC7FF2048RAM
0xC800-0xCFFF2048Write NOP, Readcustom_r
0xDFE01Read/Write NOP
0xE000-0xE3FF1024RAM Write, Sharedvideoram_w, videoram
0xE4001Writefgpalette_w
0xE8001Device Writesoundlatch, generic_latch_8_device, write
0xF000-0xF0FF256RAM, Sharedspriteram
0xF4001Writebg_scrollx_w
0xF8001Read Port, Write NOPP1,
0x0001Joystick RightActive High
0x0002Joystick LeftActive High
0x0004Joystick UpActive High
0x0008Joystick DownActive High
0x0010Button 1Active High
0x0020Button 3Active High
0x0040Button 2Active High
0x0080UnusedActive High
0xF8011Read Port, WriteP2, bgcolor_w
0x0001Joystick RightActive High
0x0002Joystick LeftActive High
0x0004Joystick UpActive High
0x0008Joystick DownActive High
0x0010Button 1Active High
0x0020Button 3Active High
0x0040Button 2Active High
0x0080UnusedActive High
0xF8021Read PortSYSTEM
0x0001Coin 1Active High
0x0002Coin 2Active High
0x0004Service 1Active High
0x0010Start 1Active High
0x0020Start 2Active High
0x00c8UnusedActive High
0xF8031Writebg_scrolly_w
0xF8041Read PortDSW2
0x00076C_1CActive High
0x00063C_1CActive High
0x00042C_1CActive High
0x00001C_1CActive High
0x00052C_3CActive High
0x00011C_2CActive High
0x00021C_3CActive High
0x00031C_6CActive High
0x00386C_1CActive High
0x00303C_1CActive High
0x00202C_1CActive High
0x00001C_1CActive High
0x00282C_3CActive High
0x00081C_2CActive High
0x00101C_3CActive High
0x00181C_6CActive High
0x0000Normal DisplayActive High
0x0040Stop MotionActive High
0x0000EnglishActive High
0x0080JapaneseActive High
0xF8051Read PortDSW1
0x00003Active High
0x00015Active High
0x00027Active High
0x0003Infinite (Cheat)Active High
0x000c100000Active High
0x000850000Active High
0x000420000Active High
0x0000NoneActive High
0x0000UprightActive High
0x0040CocktailActive High
0x00b0UnusedActive High
0xF8061Read NOP(/* Protection related, ((val&3)==2) -> jump to 0 */)
0xFC001Writeflip_w
0xFC011Writenmi_main_enable_w
0xFC021Write NOP(/* Unknown */)
0xFC031Write NOP(/* Unknown */)
0xFC041Writebgbank_w
0xFC051Writefgbank_w
0xFC061Write NOP(/* Unknown */)
0xFC071Write NOP(/* Unknown */)
Memory Area:sub_map
Address RangeLengthFunctionDescription
0x0000-0x0FFF4096ROM
0x2000-0x23FF1024RAM
0x30001Device Read, Writesoundlatch, generic_latch_8_device, read, nmi_sub_enable_w
0x40001RAM
0x5000-0x50012Device Writeay1, ay8910_device, address_data_w
0x6000-0x60012Device Writeay2, ay8910_device, address_data_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:audiocpu
Address RangeLengthLabel/LocationDescription
0x0000-0x0FFF4096prom9.5nCRC(8b4d944e) (Fluke: 078A)
Memory Area:gfx1
Address RangeLengthLabel/LocationDescription
0x0000-0x0FFF4096prom1.8kCRC(10aba36d) (Fluke: 5637)
0x1000-0x1FFF4096prom2.7kCRC(b8a4d94e) (Fluke: 08FE)
0x2000-0x2FFF4096prom3.6kCRC(9f51185b) (Fluke: FE82)
Memory Area:gfx2
Address RangeLengthLabel/LocationDescription
0x0000-0x0FFF4096prom11.16fCRC(129122c6) (Fluke: 70E1)
0x1000-0x1FFF4096prom12.16hCRC(69b09323) (Fluke: C84C)
0x2000-0x2FFF4096prom13.16kCRC(e9f67599) (Fluke: 53A2)
Memory Area:gfx3
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFF8192prom14.16lCRC(ffaa0b8a) (Fluke: 2DBA)
0x2000-0x3FFF8192prom15.16mCRC(41445155) (Fluke: 18ED)
0x4000-0x5FFF8192prom16.16pCRC(94814c5d) (Fluke: 203B)
Memory Area:maincpu
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFF8192prom4.8dCRC(d3ae0840) (Fluke: 5D51)
0x2000-0x3FFF8192prom6.8bCRC(65f09c56) (Fluke: 4158)
0x4000-0x5FFF8192prom5.7dCRC(de48afb4) (Fluke: BB16)
0x6000-0x7FFF8192prom7.7bCRC(bfaeff9f) (Fluke: EC47)
Memory Area:proms
Address RangeLengthLabel/LocationDescription
0x0000-0x00FF256prom_red.3pCRC(505fd8c2) (Fluke: 0310)
0x0100-0x01FF256prom_grn.4pCRC(6a00199d) (Fluke: F8EE)
0x0200-0x02FF256prom_blu.4rCRC(7b4c5788) (Fluke: 1336)
Memory Area:user1
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFF8192prom10.16dCRC(a96e3c95) (Fluke: D96A)
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