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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.
Arch Rivals (Bally Midway, 1989)
Memory Area:mcr68_map
Address RangeLengthFunctionDescription
0x0000-0x3FFFF262144ROM
0x60000-0x63FFF16384RAM
0x70000-0x70FFF4096RAM Write, Sharedmcr68_videoram_w, videoram
0x71000-0x71FFF4096RAM
0x80000-0x80FFF4096RAM, Sharedspriteram
0x90000-0x9007F128Device Write, Sharedpalette, palette_device, write, palette
0xA0000-0xA000F16Read/Writemcr68_6840_upper_r, mcr68_6840_upper_w
0xB0000-0xBFFFF65536Device Writewatchdog, watchdog_timer_device, reset16_w
0xD0000-0xDFFFF65536Read PortIN0
0x0001Coin 1Active Low
0x0002Coin 2Active Low
0x000cUnusedActive Low
0x0010TiltActive Low
0x0020UnusedActive Low
0x0040Service 1Active Low
0x0100Start 1Active Low
0x0200Start 2Active Low
0x0c00UnusedActive Low
0x1000Button 1Active Low
0x2000Button 2Active Low
0x4000Button 1Active Low
0x8000Button 2Active Low
0xE0000-0xEFFFF65536Read PortIN1
0xffffUnusedActive High
0xF0000-0xFFFFF65536Read PortDSW
0x0003Game_TimeActive High
0x0003Preset TimeActive High
0x0002Preset + 10secActive High
0x0001Preset + 20secActive High
0x0000Preset + 30secActive High
0x001cCoinageActive High
0x00143C_1CActive High
0x00182C_1CActive High
0x001c1C_1CActive High
0x00102C_3CActive High
0x000c1C_2CActive High
0x00081C_3CActive High
0x00041C_5CActive High
0x00001C_6CActive High
0x0020DefaultActive High
0x0000Hometown HeroesActive High
0x0040Demo_SoundsActive High
0x0000OffActive High
0x0040OnActive High
0x0080Free_PlayActive High
0x0080OffActive High
0x0000OnActive High
0xff00UnusedActive Low
 

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:cvsd:cpu
Address RangeLengthLabel/LocationDescription
0x10000-0x17FFF32768arch_rivals_u4_rev1.u4CRC(96b3c652),"REV1" portion of label is brown (Fluke: 2E25)
0x10000-0x17FFF32768arch_rivals_u4_rev1.u4CRC(96b3c652),"REV1" portion of label is brown (Fluke: 2E25)
0x30000-0x37FFF32768arch_rivals_u19_rev1.u19CRC(c4b3dc23) (Fluke: 5FA3)
0x30000-0x37FFF32768arch_rivals_u19_rev1.u19CRC(c4b3dc23) (Fluke: 5FA3)
0x50000-0x57FFF32768arch_rivals_u20_rev1.u20CRC(f7907a02) (Fluke: EE0C)
0x50000-0x57FFF32768arch_rivals_u20_rev1.u20CRC(f7907a02) (Fluke: EE0C)
Memory Area:gfx1
Address RangeLengthLabel/LocationDescription
0x0000-0xFFFF65536arch_rivals_11d_rev1.11dCRC(7eb3d7c6),"REV1" portion of label is brown (Fluke: B9C8)
0x0000-0xFFFF65536arch_rivals_11d_rev1.11dCRC(7eb3d7c6),"REV1" portion of label is brown (Fluke: B9C8)
0x10000-0x1FFFF65536arch_rivals_12d_rev1.12dCRC(31e68050) (Fluke: 0712)
0x10000-0x1FFFF65536arch_rivals_12d_rev1.12dCRC(31e68050) (Fluke: 0712)
Memory Area:gfx2
Address RangeLengthLabel/LocationDescription
0x0000-0x1FFFF131072arch_rivals_7j_rev1.7jCRC(148ce28c),"REV1" portion of label is brown (Fluke: 94E7)
0x0000-0x1FFFF131072arch_rivals_7j_rev1.7jCRC(148ce28c),"REV1" portion of label is brown (Fluke: 94E7)
0x20000-0x3FFFF131072arch_rivals_8j_rev1.8jCRC(58187ac2) (Fluke: AA47)
0x20000-0x3FFFF131072arch_rivals_8j_rev1.8jCRC(58187ac2) (Fluke: AA47)
0x40000-0x5FFFF131072arch_rivals_9j_rev1.9jCRC(0dd1204e) (Fluke: 4C59)
0x40000-0x5FFFF131072arch_rivals_9j_rev1.9jCRC(0dd1204e) (Fluke: 4C59)
0x60000-0x7FFFF131072arch_rivals_10j_rev1.10jCRC(eb3d0344) (Fluke: 9310)
0x60000-0x7FFFF131072arch_rivals_10j_rev1.10jCRC(eb3d0344) (Fluke: 9310)
Memory Area:plds
Address RangeLengthLabel/LocationDescription
0x0000-0x00EA235pls153.11jCRC(761c3b56) (Fluke: C665)
0x0000-0x00EA235pls153.11jCRC(761c3b56) (Fluke: C665)
0x0100-0x01EA235pls153.12jCRC(48eed036) (Fluke: 4821)
0x0100-0x01EA235pls153.12jCRC(48eed036) (Fluke: 4821)
0x0200-0x02EA235pls153.14hCRC(d4203273) (Fluke: 4903)
0x0200-0x02EA235pls153.14hCRC(d4203273) (Fluke: 4903)
0x0300-0x033352pal12h6.14ePAL is read protected
0x0300-0x033352pal12h6.14ePAL is read protected
0x0400-0x0503260pal16r4a.14kPAL is read protected
0x0400-0x0503260pal16r4a.14kPAL is read protected
0x0600-0x0703260pal16r4a.2kPAL is read protected
0x0600-0x0703260pal16r4a.2kPAL is read protected
0x0800-0x0903260pal16r6a.15ePAL is read protected
0x0800-0x0903260pal16r6a.15ePAL is read protected
0x0A00-0x0B03260pal16l8a.1jPAL is read protected
0x0A00-0x0B03260pal16l8a.1jPAL is read protected
0x0C00-0x0D03260pal16l8a.2jPAL is read protected
0x0C00-0x0D03260pal16l8a.2jPAL is read protected
0x0E00-0x0F43324pal20l8a.9bPAL is read protected
0x0E00-0x0F43324pal20l8a.9bPAL is read protected
0x1000-0x10CB204pl20x10a.14fPAL is read protected
0x1000-0x10CB204pl20x10a.14fPAL is read protected
0x1100-0x11CB204pl20x10a.15fPAL is read protected
0x1100-0x11CB204pl20x10a.15fPAL is read protected
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