Search

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.
Centipede (bootleg, 1980)
Memory Area:centipdb_map
Address RangeLengthFunctionDescription
0x0000-0x03FF1024Mirror, RAM0x4000,
0x0400-0x07BF960Mirror, RAM Write, Shared0x4000, centiped_videoram_w, videoram
0x07C0-0x07FF64Mirror, RAM, Shared0x4000, , spriteram
0x08001Mirror, Read Port0x4000, DSW1
0x08011Mirror, Read Port0x4000, DSW2
0x0C001Mirror, Read0x4000, centiped_IN0_r
0x0C011Mirror, Read Port0x4000, IN1
0x0C021Mirror, Read0x4000, centiped_IN2_r
0x0C031Mirror, Read Port0x4000, IN3
0x1000-0x10012Mirror, Device Write0x4000, aysnd, ay8910_device, data_address_w
0x10011Mirror, Device Read0x4000, aysnd, ay8910_device, data_r
0x1400-0x140F16Mirror, Write, Shared0x4000, centiped_paletteram_w, paletteram
0x1600-0x163F64Mirror, Device Write0x4000, earom, atari_vg_earom_device, write
0x16801Mirror, Device Write0x4000, earom, atari_vg_earom_device, ctrl_w
0x1700-0x173F64Mirror, Device Read0x4000, earom, atari_vg_earom_device, read
0x18001Mirror, Write0x4000, irq_ack_w
0x1C00-0x1C023Mirror, Write0x4000, coin_count_w
0x1C03-0x1C042Mirror, Write0x4000, led_w
0x1C071Mirror, Write0x4000, centiped_flip_screen_w
0x2000-0x27FF2048ROM
0x2800-0x3FFF6144Mirror, ROM0x4000,
0x6000-0x67FF2048ROM
 

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:gfx1
Address RangeLengthLabel/LocationDescription
0x0000-0x07FF2048136001-211.f7CRC(880acfb9) (Fluke: A7C3)
0x0800-0x0FFF2048136001-212.hj7CRC(b1397029) (Fluke: 31D8)
Memory Area:maincpu
Address RangeLengthLabel/LocationDescription
0x2000-0x27FF2048d1CRC(b17b8e0b) (Fluke: 7D78)
0x2800-0x2FFF2048e1CRC(7684398e) (Fluke: 9EE1)
0x3000-0x37FF2048h1CRC(74580fe4) (Fluke: ABD3)
0x3800-0x3FFF2048j1CRC(84600161) (Fluke: F3BD)
0x6000-0x67FF2048k1CRC(f1aa329b) (Fluke: C2F2)
Memory Area:proms
Address RangeLengthLabel/LocationDescription
0x0000-0x00FF256136001-213.p4CRC(6fa3093a) (Fluke: 6F98)
© Copyright 2009-2025, ClassicSoft, LLC. All rights reserved
Powered by the ClassicSoft Web Content Framework V3