Turkey Shoot 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.

Turkey Shoot (Williams, 1984)

Memory Area:williams2_bank8000_map

Address Range	Length	Function	Description
0x0000-0x07FF	2048	RAM Bank	vram8000
0x0800-0x0FFF	2048	RAM Write, Shared	williams2_paletteram_w, paletteram

Memory Area:williams2_common_map

Address Range

Length

Function

Description

0x0000-0x7FFF

32768

Read Bank

bank1

0x0000-0xBFFF

49152

RAM, Shared

videoram

0x8000-0x87FF

2048

Device

bank8000, address_map_bank_device, amap8

0xC000-0xC7FF

2048

RAM Write, Shared

williams2_tileram_w, williams2_tile

0xC800-0xC87F

128

Write

williams2_bank_select_w

0xC880-0xC887

Mirror, Write

0x0078, williams_blitter_w

0xC900-0xC97F

128

Write

williams2_watchdog_reset_w

0xC980-0xC983

Mirror, Device Read/Write

0x0070, pia_1, pia6821_device, read, write

0x0001	Auto Up / Manual Down	Active High
0x0002	Advance	Active High
0x0004	High Score Reset	Active High
0x0008	Coin 1	Active High
0x0010	Coin 2	Active High
0x0020	Coin 3	Active High
0x0040	Tilt	Active High
0x0080	Unused	Active High

0xC984-0xC987

Mirror, Device Read/Write

0x0070, pia_0, pia6821_device, read, write

0x003f	Special	Active High
0x0040	Unknown	Active Low
0x0080	Button 1	Active Low

0xC98C-0xC98F

Mirror, Write

0x0070, williams2_7segment_w

0xCB00-0xCB1F

Write

williams2_fg_select_w

0xCB20-0xCB3F

Write

williams2_bg_select_w

0xCB40-0xCB5F

Write

williams2_xscroll_low_w

0xCB60-0xCB7F

Write

williams2_xscroll_high_w

0xCB80-0xCB9F

Write

defender_video_control_w

0xCBA0-0xCBBF

Write

williams2_blit_window_enable_w

0xCBE0-0xCBEF

Read

williams_video_counter_r

0xCC00-0xCFFF

1024

RAM Write, Shared

williams_cmos_w, nvram

Memory Area:williams2_d000_ram_map

Address Range	Length	Function	Description
0xD000-0xDFFF	4096	RAM
0xE000-0xFFFF	8192	ROM

Memory Area:williams2_d000_rom_map

Address Range	Length	Function	Description
0xD000-0xFFFF	12288	ROM

Memory Area:williams2_sound_map

Address Range	Length	Function	Description
0x0000-0x007F	128	RAM	(/* internal RAM */)
0x0080-0x00FF	128	RAM	(/* MC6810 RAM */)
0x2000-0x2003	4	Mirror, Device Read/Write	0x1ffc, pia_2, pia6821_device, read, write
0xE000-0xFFFF	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
0x0000-0x1FFF	8192	rom20.ic57	CRC(c6e1d253),IC57 (Fluke: 6305)
0x2000-0x3FFF	8192	rom21.ic58	CRC(9874e90f),IC58 (Fluke: 8FED)
0x4000-0x5FFF	8192	rom19.ic41	CRC(b9ce4d2a),IC41 (Fluke: A241)

Memory Area:maincpu

Address Range	Length	Label/Location	Description
0xD000-0xDFFF	4096	rom18.ic55	CRC(effc33f1),IC55 (Fluke: 9CD7)
0xE000-0xEFFF	4096	rom2.ic9	CRC(fd982687),IC9 (Fluke: 8C0D)
0xF000-0xFFFF	4096	rom3.ic10	CRC(9617054d),IC10 (Fluke: 317F)
0x10000-0x11FFF	8192	rom11.ic18	CRC(60d5fab8),IC18 (Fluke: BF06)
0x12000-0x13FFF	8192	rom9.ic16	CRC(a4dd4a0e),IC16 (Fluke: C8C0)
0x14000-0x15FFF	8192	rom7.ic14	CRC(f25505e6),IC14 (Fluke: 04FD)
0x16000-0x17FFF	8192	rom5.ic12	CRC(94a7c0ed),IC12 (Fluke: C75D)
0x20000-0x21FFF	8192	rom17.ic26	CRC(b02d1ccd),IC26 (Fluke: E5F6)
0x22000-0x23FFF	8192	rom15.ic24	CRC(11709935),IC24 (Fluke: 9D03)
0x30000-0x31FFF	8192	rom10.ic17	CRC(0f32bad8),IC17 (Fluke: 6E1C)
0x32000-0x33FFF	8192	rom8.ic15	CRC(e9b6cbf7),IC15 (Fluke: 20D4)
0x34000-0x35FFF	8192	rom6.ic13	CRC(a49f617f),IC13 (Fluke: 29CF)
0x36000-0x37FFF	8192	rom4.ic11	CRC(b026dc00),IC11 (Fluke: 9DF6)
0x40000-0x41FFF	8192	rom16.ic25	CRC(69ce38f8),IC25 (Fluke: 9564)
0x42000-0x43FFF	8192	rom14.ic23	CRC(769a4ae5),IC23 (Fluke: 8763)
0x44000-0x45FFF	8192	rom13.ic21	CRC(ec016c9b),IC21 (Fluke: CEC3)
0x46000-0x47FFF	8192	rom12.ic19	CRC(98ae7afa),IC19 (Fluke: E1BE)

Memory Area:proms

Address Range	Length	Label/Location	Description
0x0000-0x00FF	256	82s129.ic47	CRC(efb03024)
0x0000-0x001F	32	82s123.ic14a	CRC(27a6d555)
0x0000-0x01FF	512	7649.ic60	CRC(0ea3f7fb)

Memory Area:soundcpu

Address Range	Length	Label/Location	Description
0xE000-0xFFFF	8192	rom1.ic8	CRC(011a94a7),IC8 (Fluke: 2F2F)