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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.
Star Trek (Sega, 1982)
Memory Area:main_map
Address RangeLengthFunctionDescription
0x0000-0x07FF2048ROM(/* CPU board ROM */)
0x0800-0xBFFF47104ROM(/* PROM board ROM area */)
0xC800-0xCFFF2048RAM Write, Sharedmainram_w, mainram
0xE000-0xEFFF4096RAM Write, Sharedvectorram_w, vectorram
Memory Area:main_portmap
Address RangeLengthFunctionDescription
0x00BC1Unknown(/* AM_READ ??? */)
0x00BD-0x00BE2Writemultiply_w
0x00BE1Readmultiply_r
0x00BF1Writeunknown_w
0x00F8-0x00FB4Readmangled_ports_r
0x00F91Mirror, Write0x04, coin_count_w
0x00FC1Read PortFC
 

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
0x0000-0x07FF20481670.speech-u7CRC(b779884b) (Fluke: D98C)
Memory Area:maincpu
Address RangeLengthLabel/LocationDescription
0x0000-0x07FF20481873.cpu-u25CRC(be46f5d9) (Fluke: 9D3F)
0x0800-0x0FFF20481848.prom-u1CRC(65e3baf3) (Fluke: 232A)
0x1000-0x17FF20481849.prom-u2CRC(8169fd3d) (Fluke: B90A)
0x1800-0x1FFF20481850.prom-u3CRC(78fd68dc) (Fluke: CDFA)
0x2000-0x27FF20481851.prom-u4CRC(3f55ab86) (Fluke: 6280)
0x2800-0x2FFF20481852.prom-u5CRC(2542ecfb) (Fluke: C591)
0x3000-0x37FF20481853.prom-u6CRC(75c2526a) (Fluke: D10E)
0x3800-0x3FFF20481854.prom-u7CRC(096d75d0) (Fluke: 8389)
0x4000-0x47FF20481855.prom-u8CRC(bc7b9a12) (Fluke: 6895)
0x4800-0x4FFF20481856.prom-u9CRC(ed9fe2fb) (Fluke: 2877)
0x5000-0x57FF20481857.prom-u10CRC(28699d45) (Fluke: 54B7)
0x5800-0x5FFF20481858.prom-u11CRC(3a7593cb) (Fluke: 8C60)
0x6000-0x67FF20481859.prom-u12CRC(5b11886b) (Fluke: 2BD0)
0x6800-0x6FFF20481860.prom-u13CRC(62eb96e6) (Fluke: D34D)
0x7000-0x77FF20481861.prom-u14CRC(99852d1d) (Fluke: 30CC)
0x7800-0x7FFF20481862.prom-u15CRC(76ce27b2) (Fluke: 4865)
0x8000-0x87FF20481863.prom-u16CRC(dd92d187) (Fluke: 4F89)
0x8800-0x8FFF20481864.prom-u17CRC(e37d3a1e) (Fluke: 9E6C)
0x9000-0x97FF20481865.prom-u18CRC(b2ec8125) (Fluke: 4A71)
0x9800-0x9FFF20481866.prom-u19CRC(6f188354) (Fluke: 918E)
0xA000-0xA7FF20481867.prom-u20CRC(b0a3eae8) (Fluke: 84B2)
0xA800-0xAFFF20481868.prom-u21CRC(8b4e2e07) (Fluke: 1B34)
0xB000-0xB7FF20481869.prom-u22CRC(e5663070) (Fluke: 82C6)
0xB800-0xBFFF20481870.prom-u23CRC(4340616d) (Fluke: C0CC)
Memory Area:proms
Address RangeLengthLabel/LocationDescription
0x0000-0x03FF1024s-c.xyt-u39CRC(56484d19),sine table (Fluke: 7C2D)
0x0400-0x041F32pr-82.cpu-u15CRC(c609b79e),CPU board addressing (Fluke: 2767)
0x0420-0x043F326331.speech-u30CRC(adcb81d0),speech board addressing (Fluke: CF17)
Memory Area:speech
Address RangeLengthLabel/LocationDescription
0x0000-0x0FFF40961871.speech-u6CRC(03713920) (Fluke: C4FB)
0x1000-0x1FFF40961872.speech-u5CRC(ebb5c3a9) (Fluke: A1A9)
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