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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.
Guzzler (Tehkan, 1983)
Memory Area:guzzler_map
Address RangeLengthFunctionDescription
0xC000-0xC7FF2048RAM(/* ??? used by Guzzler */)
0xE000-0xFFFF8192ROM(/* Guzzler only */)
Memory Area:swimmer_audio_map
Address RangeLengthFunctionDescription
0x0000-0x0FFF4096ROM
0x2000-0x23FF1024RAM
0x30001Device Readsoundlatch, generic_latch_8_device, read
0x4000-0x40012RAM(/* ??? */)
Memory Area:swimmer_audio_portmap
Address RangeLengthFunctionDescription
0x0000-0x00012Device Writeay1, ay8910_device, data_address_w
0x0080-0x00812Device Writeay2, ay8910_device, data_address_w
Memory Area:swimmer_map
Address RangeLengthFunctionDescription
0x0000-0x7FFF32768ROM
0x8000-0x87FF2048RAM
0x8800-0x88FF256Mirror, RAM, Shared0x0100, , bigspriteram
0x9000-0x93FF1024Mirror, RAM, Shared0x0400, , videoram
0x9800-0x981F32Write Only, Sharedcolumn_scroll
0x9880-0x989F32Write Only, Sharedspriteram
0x98FC-0x98FF4Write Only, Sharedbigspritectrl
0x9C00-0x9FFF1024RAM Write, Sharedcclimber_colorram_w, colorram
0xA0001Read Port, WriteP2, nmi_mask_w
0x0001Joystick RightActive High
0x0002Joystick LeftActive High
0x0004Joystick UpActive High
0x0008Joystick DownActive High
0x0010Button 1Active High
0x00e0UnusedActive High
0xA001-0xA0022Write Only, Sharedflip_screen
0xA0031Write Only, Sharedsidebg_enable
0xA0041Write Only, Sharedpalettebank
0xA8001Read Port, WriteP1, swimmer_sh_soundlatch_w
0x0001Joystick RightActive High
0x0002Joystick LeftActive High
0x0004Joystick UpActive High
0x0008Joystick DownActive High
0x0010Button 1Active High
0x00e0UnusedActive High
0xB0001Read PortDSW1
0x0003LivesActive High
0x00003Active High
0x00014Active High
0x00025Active High
0x0003Infinite (Cheat)Active High
0x000cBonus_LifeActive High
0x000420K, every 50KActive High
0x000030K, every 100KActive High
0x000830K onlyActive High
0x000cNoneActive High
0x0030Coin_AActive High
0x00102C_1CActive High
0x00001C_1CActive High
0x00201C_2CActive High
0x00301C_3CActive High
0x00c0Coin_BActive High
0x00001C_1CActive High
0x00401C_2CActive High
0x00801C_3CActive High
0x00c01C_6CActive High
0xB8001Read Port, Write Only, SharedDSW2, , bgcolor
0x000fUnusedActive High
0x0010CabinetActive High
0x0010UprightActive High
0x0000CocktailActive High
0x00203 LettersActive High
0x000010 LettersActive High
0x00c0DifficultyActive High
0x0000EasyActive High
0x0040MediumActive High
0x0080HardActive High
0x00c0HardestActive High
0xB8801Read PortSYSTEM
0x0001Coin 1Active High
0x0002Coin 2Active High
0x0004Start 1Active High
0x0008Start 2Active High
0x00f0UnusedActive High
 

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
0x0000-0x0FFF4096guzz-12.binCRC(f3754d9e) (Fluke: C388)
0x0000-0x0FFF4096guzz-12.binCRC(f3754d9e) (Fluke: C388)
Memory Area:gfx1
Address RangeLengthLabel/LocationDescription
0x0000-0x0FFF4096guzz-13.binCRC(afc464e2),chars (Fluke: 3900)
0x0000-0x0FFF4096guzz-13.binCRC(afc464e2),chars (Fluke: 3900)
0x1000-0x1FFF4096guzz-14.binCRC(acbdfe1f) (Fluke: 1849)
0x1000-0x1FFF4096guzz-14.binCRC(acbdfe1f) (Fluke: 1849)
0x2000-0x2FFF4096guzz-15.binCRC(66978c05) (Fluke: BD88)
0x2000-0x2FFF4096guzz-15.binCRC(66978c05) (Fluke: BD88)
Memory Area:gfx2
Address RangeLengthLabel/LocationDescription
0x0000-0x0FFF4096guzz-11.binCRC(ec2e9d86),big sprite (Fluke: BD72)
0x0000-0x0FFF4096guzz-11.binCRC(ec2e9d86),big sprite (Fluke: BD72)
0x1000-0x1FFF4096guzz-10.binCRC(bd3f0bf7) (Fluke: 2929)
0x1000-0x1FFF4096guzz-10.binCRC(bd3f0bf7) (Fluke: 2929)
0x2000-0x2FFF4096guzz-09.binCRC(18927579) (Fluke: 9B18)
0x2000-0x2FFF4096guzz-09.binCRC(18927579) (Fluke: 9B18)
Memory Area:maincpu
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFF8192guzz-01.binCRC(58aaa1e9) (Fluke: 7C5F)
0x2000-0x3FFF8192guzz-02.binCRC(f80ceb17) (Fluke: B3D5)
0x4000-0x5FFF8192guzz-03.binCRC(e63c65a2) (Fluke: DA95)
0x6000-0x7FFF8192guzz-04.binCRC(45be42f5) (Fluke: 83E2)
0xE000-0xFFFF8192guzz-16.binCRC(61ee00b7) (Fluke: 3114)
0xE000-0xFFFF8192guzz-16.binCRC(61ee00b7) (Fluke: 3114)
Memory Area:proms
Address RangeLengthLabel/LocationDescription
0x0000-0x00FF256guzzler.003CRC(f86930c1) (Fluke: ED84)
0x0000-0x00FF256guzzler.003CRC(f86930c1) (Fluke: ED84)
0x0100-0x01FF256guzzler.002CRC(b566ea9e) (Fluke: 7C62)
0x0100-0x01FF256guzzler.002CRC(b566ea9e) (Fluke: 7C62)
0x0200-0x021F32guzzler.001CRC(69089495) (Fluke: 6DEC)
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