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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.
Frenzy (Stern Electronics, 1981)
Memory Area:berzerk_io_map
Address RangeLengthFunctionDescription
0x0000-0x003F64Read/Write NOP
0x0040-0x00478Read/Writeaudio_r, audio_w
0x00481Read Port, Write NOPP1,
0x00491Read Port, Write NOPSYSTEM,
0x004A1Read Port, Write NOPP2,
0x004B1Read NOP, Writemagicram_control_w
0x004C1Read/Writenmi_enable_r, nmi_enable_w
0x004D1Read/Writenmi_disable_r, nmi_disable_w
0x004E1Read, Write NOPintercept_v256_r, (// note reading from here should clear pending frame interrupts, see zfb-1.tiff 74ls74 at 3D pin 13 /CLR)
0x004F1Read NOP, Writeirq_enable_w
0x0050-0x00578Read/Write NOP(/* second sound board, initialized but not used */)
0x0058-0x005F8Read/Write NOP
0x00601Mirror, Read Port, Write NOP0x18, F3,
0x000fBonus_LifeActive High
0x00011000Active High
0x00022000Active High
0x00033000Active High
0x00044000Active High
0x00055000Active High
0x00066000Active High
0x00077000Active High
0x00088000Active High
0x00099000Active High
0x000a10000Active High
0x000b11000Active High
0x000c12000Active High
0x000d13000Active High
0x000e14000Active High
0x000f15000Active High
0x0000NoneActive High
0x0030UnusedActive High
0x00c0LanguageActive High
0x0000EnglishActive High
0x0040GermanActive High
0x0080FrenchActive High
0x00c0SpanishActive High
0x00611Mirror, Read Port, Write NOP0x18, F2,
0x0000OffActive High
0x0001Color testActive High
0x0002UnknownActive High
0x0003Signature AnalysisActive High
0x0000OffActive High
0x0004OnActive High
0x0000OffActive High
0x0008OnActive High
0x00f0UnusedActive High
0x00621Mirror, Read Port, Write NOP0x18, F6,
0x00000 (invalid)Active High
0x00011Active High
0x00022Active High
0x00033Active High
0x00044Active High
0x00055Active High
0x00066Active High
0x00077Active High
0x00088Active High
0x00099Active High
0x000a10Active High
0x000b11Active High
0x000c12Active High
0x000d13Active High
0x000e14Active High
0x000f15Active High
0x00ff255Active High
0x00631Mirror, Read Port, Write NOP0x18, F5,
0x00000 (invalid)Active High
0x00011Active High
0x00022Active High
0x00033Active High
0x00044Active High
0x00055Active High
0x00066Active High
0x00077Active High
0x00088Active High
0x00099Active High
0x000a10Active High
0x000b11Active High
0x000c12Active High
0x000d13Active High
0x000e14Active High
0x000f15Active High
0x00ff255Active High
0x00641Mirror, Read Port, Write NOP0x18, F4,
0x0000Free_PlayActive High
0x00011Active High
0x00022Active High
0x00033Active High
0x00044Active High
0x00055Active High
0x00066Active High
0x00077Active High
0x00088Active High
0x00099Active High
0x000a10Active High
0x000b11Active High
0x000c12Active High
0x000d13Active High
0x000e14Active High
0x000f15Active High
0x00ff255Active High
0x00651Mirror, Read Port, Write NOP0x18, SW2,
0x00661Mirror, Read/Write0x18, led_off_r, led_off_w
0x00671Mirror, Read/Write0x18, led_on_r, led_on_w
0x0080-0x00FF128Read/Write NOP
Memory Area:berzerk_map
Address RangeLengthFunctionDescription
0x0000-0x07FF2048ROM
0x0800-0x0BFF1024Mirror, RAM, Shared0x0400, , nvram
0x1000-0x3FFF12288ROM
0x4000-0x5FFF8192RAM, Sharedvideoram
0x6000-0x7FFF8192RAM Write, Sharedmagicram_w, videoram
0x8000-0x87FF2048Mirror, RAM, Shared0x3800, , colorram
0xC000-0xFFFF16384Read/Write NOP
Memory Area:frenzy_map
Address RangeLengthFunctionDescription
0x0000-0x3FFF16384ROM
0x4000-0x5FFF8192RAM, Sharedvideoram
0x6000-0x7FFF8192RAM Write, Sharedmagicram_w, videoram
0x8000-0x87FF2048Mirror, RAM, Shared0x3800, , colorram
0xC000-0xCFFF4096ROM
0xF800-0xFBFF1024Mirror, RAM, Shared0x0400, , nvram
 

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
0x0000-0x0FFF40961c-0CRC(abdd25b8) (Fluke: 17E5)
0x1000-0x1FFF40961d-1CRC(536e4ae8) (Fluke: 2EC6)
0x2000-0x2FFF40963d-2CRC(3eb9bc9b) (Fluke: 957F)
0x3000-0x3FFF40965d-3CRC(e1d3133c) (Fluke: 7A56)
0xC000-0xCFFF40966d-4CRC(5581a7b1) (Fluke: 24F2)
Memory Area:proms
Address RangeLengthLabel/LocationDescription
0x0000-0x001F32prom.6eCRC(4471ca5d),address decoder/rom select prom (N82S123N) (Fluke: 4826)
Memory Area:speech
Address RangeLengthLabel/LocationDescription
0x0000-0x07FF2048e169-1cvo.1cCRC(2cfe825d),VSU-1000 board (Fluke: 2B6E)
0x0800-0x0FFF2048e169-2cvo.2cCRC(d2b6324e),ditto (Fluke: 1990)
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