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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.
TomCat (Atari, 1983)
Memory Area:main_map
Address RangeLengthFunctionDescription
0x0000-0x2FFF12288RAM, Shared, Regionvectorram, maincpu, 0
0x3000-0x3FFF4096ROM(/* vector_rom */)
0x4300-0x431F32Read PortIN0
0x4320-0x433F32Read PortIN1
0x4340-0x435F32Read PortDSW0
0x4360-0x437F32Read PortDSW1
0x4380-0x439F32Readstarwars_adc_r (/* a-d control result */)
0x44001Read/Writestarwars_main_read_r, starwars_main_wr_w
0x44011Readstarwars_main_ready_flag_r
0x4500-0x45FF256Device Read/Writex2212, x2212_device, read, write
0x4600-0x461F32Device Writeavg, avg_starwars_device, go_w
0x4620-0x463F32Device Writeavg, avg_starwars_device, reset_w
0x4640-0x465F32Device Writewatchdog, watchdog_timer_device, reset_w
0x4660-0x467F32Writeirq_ack_w
0x4680-0x469F32Read NOP, Writestarwars_out_w
0x46A0-0x46BF32Writestarwars_nstore_w
0x46C0-0x46C23Writestarwars_adc_select_w
0x46E01Writestarwars_soundrst_w
0x4700-0x47078Writestarwars_math_w
0x47001Readstarwars_div_reh_r
0x47011Readstarwars_div_rel_r
0x47031Readstarwars_prng_r (/* pseudo random number generator */)
0x4800-0x4FFF2048RAM(/* CPU and Math RAM */)
0x5000-0x5FFF4096RAM, Sharedmathram (/* CPU and Math RAM */)
0x6000-0x7FFF8192ROM Bankbank1 (/* banked ROM */)
0x8000-0xFFFF32768ROM(/* rest of main_rom */)
Memory Area:sound_map
Address RangeLengthFunctionDescription
0x0000-0x07FF2048Writestarwars_sout_w
0x0800-0x0FFF2048Readstarwars_sin_r (/* SIN Read */)
0x1000-0x107F128RAM(/* 6532 ram */)
0x1080-0x109F32Device Read/Writeriot, riot6532_device, read, write
0x1800-0x183F64Writequad_pokeyn_w
0x2000-0x27FF2048RAM(/* program RAM */)
0x4000-0x7FFF16384ROM(/* sound roms */)
0xB000-0xFFFF20480ROM(/* more sound roms */)
 

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
0x4000-0x5FFF8192136021.107Sound ROM 0
0x6000-0x7FFF8192136021.208Sound ROM 0
Memory Area:maincpu
Address RangeLengthLabel/LocationDescription
0x3000-0x3FFF4096tcavg3.1lCRC(27188aa9) (Fluke: E0F7)
0x6000-0x7FFF8192tc6.1fCRC(56e284ff) (Fluke: F87C)
0x8000-0x9FFF8192tc8.1hjCRC(7b7575e3) (Fluke: 95FA)
0xA000-0xBFFF8192tca.1jkCRC(a1020331) (Fluke: 57E9)
0xE000-0xFFFF8192tce.1mCRC(4a3de8a3) (Fluke: 0BA6)
Memory Area:user1
Address RangeLengthLabel/LocationDescription
0x0000-0x00FF256136021-105.1lCRC(82fc3eb2),AVG PROM (Fluke: 7426)
0x0000-0x00FF256136021-105.1lCRC(82fc3eb2),AVG PROM (Fluke: 7426)
Memory Area:user2
Address RangeLengthLabel/LocationDescription
0x0000-0x03FF1024136021.110CRC(810e040e),PROM 0
0x0400-0x07FF1024136021.111CRC(ae69881c),PROM 1
0x0800-0x0BFF1024136021.112CRC(ecf22628),PROM 2
0x0C00-0x0FFF1024136021.113CRC(83febfde),PROM 3
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