Gun Champ 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.

Gun Champ (Model Racing, 1980)

Memory Area:claybust_io_map

Address Range	Length	Function	Description
0x0001	1	Read Port, Device Write	IN1, mb14241, mb14241_device, shift_count_w
0x0002	1	Read, Device Write	claybust_gun_lo_r, mb14241, mb14241_device, shift_data_w
0x0003	1	Device Read	mb14241, mb14241_device, shift_result_r (//AM_WRITENOP // port3 write looks sound-related)
0x0004	1	Device Write	watchdog, watchdog_timer_device, reset_w
0x0006	1	Read	claybust_gun_hi_r

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 Range	Length	Label/Location	Description
0x0000-0x03FF	1024	251.a1	CRC(f27a8c1e)
0x0400-0x07FF	1024	252.a2	CRC(d53b8f91)
0x0800-0x0BFF	1024	253.a4	CRC(9ef35c6c)
0x0C00-0x0FFF	1024	254.a5	CRC(ba5b562d)
0x1000-0x13FF	1024	255.a6	CRC(00ea8293)
0x1400-0x17FF	1024	256.a8	CRC(e271150c)
0x1800-0x1BFF	1024	257.a9	CRC(0da5d9ad)
0x1C00-0x1FFF	1024	258.a10	CRC(471d4052)