Canyon Bomber Memory Map

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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.

Canyon Bomber (Atari, 1977)

Memory Area:main_map

Address Range	Length	Function	Description
0x0000-0x00FF	256	Mirror, RAM	0x100,
0x0400-0x0401	2	Write	canyon_motor_w
0x0500	1	Write	canyon_explode_w
0x0501	1	Device Write	watchdog, watchdog_timer_device, reset_w (/* watchdog, disabled in service mode */)
0x0600-0x0603	4	Write	canyon_whistle_w
0x0680-0x0683	4	Write	canyon_led_w
0x0700-0x0703	4	Write	canyon_attract_w
0x0800-0x0BFF	1024	RAM Write, Shared	canyon_videoram_w, videoram
0x1000-0x17FF	2048	Read, Write NOP	canyon_switches_r, (/* sloppy code writes here */)
0x1800-0x1FFF	2048	Read	canyon_options_r
0x2000-0x3FFF	8192	ROM

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 Range	Length	Label/Location	Description
0x0000-0x03FF	1024	9492-01.n8	CRC(7449f754) (Fluke: 584C)
0x0000-0x03FF	1024	9492-01.n8	CRC(7449f754) (Fluke: 584C)

Memory Area:proms

Address Range	Length	Label/Location	Description
0x0000-0x00FF	256	9491-01.j6	CRC(b8094b4c),sync (not used) (Fluke: 695B)
0x0000-0x00FF	256	9491-01.j6	CRC(b8094b4c),sync (not used) (Fluke: 695B)