Joust 2 - Survival of the Fittest 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.

Joust 2 - Survival of the Fittest (Williams, 1986)

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	8	Mirror, Write	0x0078, williams_blitter_w
0xC900-0xC97F	128	Write	williams2_watchdog_reset_w
0xC980-0xC983	4	Mirror, Device Read/Write	0x0070, pia_1, pia6821_device, read, write
0xC984-0xC987	4	Mirror, Device Read/Write	0x0070, pia_0, pia6821_device, read, write
0xC98C-0xC98F	4	Mirror, Write	0x0070, williams2_7segment_w
0xCB00-0xCB1F	32	Write	williams2_fg_select_w
0xCB20-0xCB3F	32	Write	williams2_bg_select_w
0xCB40-0xCB5F	32	Write	williams2_xscroll_low_w
0xCB60-0xCB7F	32	Write	williams2_xscroll_high_w
0xCB80-0xCB9F	32	Write	defender_video_control_w
0xCBA0-0xCBBF	32	Write	williams2_blit_window_enable_w
0xCBE0-0xCBEF	16	Read	williams_video_counter_r
0xCC00-0xCFFF	1024	RAM Write, Shared	williams_cmos_w, nvram

Memory Area:williams2_d000_rom_map

Address Range	Length	Function	Description
0xD000-0xFFFF	12288	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:cvsd:cpu

Address Range	Length	Label/Location	Description
0x10000-0x17FFF	32768	snd_27256_rom23_rev1.u4	CRC(3af6b47d) (Fluke: D845)
0x10000-0x17FFF	32768	snd_27256_rom23_rev1.u4	CRC(3af6b47d) (Fluke: D845)
0x30000-0x37FFF	32768	snd_27256_rom24_rev1.u19	CRC(e7f9ed2e) (Fluke: 4265)
0x30000-0x37FFF	32768	snd_27256_rom24_rev1.u19	CRC(e7f9ed2e) (Fluke: 4265)
0x50000-0x57FFF	32768	snd_27256_rom25_rev1.u20	CRC(c85b29f7) (Fluke: 7D61)
0x50000-0x57FFF	32768	snd_27256_rom25_rev1.u20	CRC(c85b29f7) (Fluke: 7D61)

Memory Area:gfx1

Address Range	Length	Label/Location	Description
0x0000-0x3FFF	16384	vid_27128_ic57_rom20_rev1.8f	CRC(572c6b01) (Fluke: 459A)
0x0000-0x3FFF	16384	vid_27128_ic57_rom20_rev1.8f	CRC(572c6b01) (Fluke: 459A)
0x4000-0x7FFF	16384	vid_27128_ic58_rom21_rev1.9f	CRC(aa94bf05) (Fluke: A881)
0x4000-0x7FFF	16384	vid_27128_ic58_rom21_rev1.9f	CRC(aa94bf05) (Fluke: A881)
0x8000-0xBFFF	16384	vid_27128_ic41_rom22_rev1.9d	CRC(c41e3daa) (Fluke: E34D)
0x8000-0xBFFF	16384	vid_27128_ic41_rom22_rev1.9d	CRC(c41e3daa) (Fluke: E34D)

Memory Area:maincpu

Address Range	Length	Label/Location	Description
0xD000-0xDFFF	4096	cpu_2732_ic55_rom2_rev1.4c	CRC(08b0d5bd) (Fluke: 5D34)
0xD000-0xDFFF	4096	cpu_2732_ic55_rom2_rev1.4c	CRC(08b0d5bd) (Fluke: 5D34)
0xE000-0xEFFF	4096	cpu_2732_ic9_rom3_rev2.4d	CRC(951175ce) (Fluke: BF27)
0xF000-0xFFFF	4096	cpu_2732_ic10_rom4_rev2.4f	CRC(ba6e0f6c) (Fluke: 8C40)
0x10000-0x11FFF	8192	cpu_2732_ic18_rom11_rev1.8j	CRC(9dc986f9) (Fluke: 20FD)
0x10000-0x11FFF	8192	cpu_2732_ic18_rom11_rev1.8j	CRC(9dc986f9) (Fluke: 20FD)
0x12000-0x13FFF	8192	cpu_2732_ic16_rom9_rev2.8h	CRC(56e2b550) (Fluke: 9E15)
0x14000-0x15FFF	8192	cpu_2732_ic14_rom7_rev2.6j	CRC(f3bce576) (Fluke: C82B)
0x16000-0x17FFF	8192	cpu_2732_ic12_rom5_rev2.6h	CRC(5f8b4919) (Fluke: 41B8)
0x20000-0x21FFF	8192	cpu_2732_ic26_rom19_rev1.10j	CRC(4ef5e805) (Fluke: 6E2B)
0x20000-0x21FFF	8192	cpu_2732_ic26_rom19_rev1.10j	CRC(4ef5e805) (Fluke: 6E2B)
0x22000-0x23FFF	8192	cpu_2732_ic24_rom17_rev1.10h	CRC(4861f063) (Fluke: 8320)
0x22000-0x23FFF	8192	cpu_2732_ic24_rom17_rev1.10h	CRC(4861f063) (Fluke: 8320)
0x24000-0x25FFF	8192	cpu_2732_ic22_rom15_rev1.9j	CRC(421aafa8) (Fluke: 200F)
0x24000-0x25FFF	8192	cpu_2732_ic22_rom15_rev1.9j	CRC(421aafa8) (Fluke: 200F)
0x26000-0x27FFF	8192	cpu_2732_ic20_rom13_rev1.9h	CRC(3432ff55) (Fluke: 2631)
0x26000-0x27FFF	8192	cpu_2732_ic20_rom13_rev1.9h	CRC(3432ff55) (Fluke: 2631)
0x30000-0x31FFF	8192	cpu_2732_ic17_rom10_rev1.8i	CRC(3e01b597) (Fluke: 94C2)
0x30000-0x31FFF	8192	cpu_2732_ic17_rom10_rev1.8i	CRC(3e01b597) (Fluke: 94C2)
0x32000-0x33FFF	8192	cpu_2732_ic15_rom8_rev1.8g	CRC(ff26fb29) (Fluke: C3C6)
0x32000-0x33FFF	8192	cpu_2732_ic15_rom8_rev1.8g	CRC(ff26fb29) (Fluke: C3C6)
0x34000-0x35FFF	8192	cpu_2732_ic13_rom6_rev2.6i	CRC(5f107db5) (Fluke: 89E5)
0x40000-0x41FFF	8192	cpu_2732_ic25_rom18_rev1.10i	CRC(47580af5) (Fluke: E260)
0x40000-0x41FFF	8192	cpu_2732_ic25_rom18_rev1.10i	CRC(47580af5) (Fluke: E260)
0x42000-0x43FFF	8192	cpu_2732_ic23_rom16_rev1.10g	CRC(869b5942) (Fluke: F87D)
0x42000-0x43FFF	8192	cpu_2732_ic23_rom16_rev1.10g	CRC(869b5942) (Fluke: F87D)
0x44000-0x45FFF	8192	cpu_2732_ic21_rom14_rev1.9i	CRC(0bbd867c) (Fluke: F5BC)
0x44000-0x45FFF	8192	cpu_2732_ic21_rom14_rev1.9i	CRC(0bbd867c) (Fluke: F5BC)
0x46000-0x47FFF	8192	cpu_2732_ic19_rom12_rev1.9g	CRC(b9221ed1) (Fluke: DE74)
0x46000-0x47FFF	8192	cpu_2732_ic19_rom12_rev1.9g	CRC(b9221ed1) (Fluke: DE74)

Memory Area:proms

Address Range	Length	Label/Location	Description
0x0000-0x00FF	256	vid_82s129_ic47_a-5282-10294.15d	CRC(efb03024)
0x0000-0x00FF	256	vid_82s129_ic47_a-5282-10294.15d	CRC(efb03024)
0x0000-0x01FF	512	vid_82s147a_ic60_a-5282-10292.12f	CRC(0ea3f7fb)
0x0000-0x001F	32	vid_82s123_ic14_a-5282-10295.2b	CRC(85057e40)
0x0000-0x01FF	512	vid_82s147a_ic60_a-5282-10292.12f	CRC(0ea3f7fb)
0x0000-0x001F	32	vid_82s123_ic14_a-5282-10295.2b	CRC(85057e40)

Memory Area:soundcpu

Address Range	Length	Label/Location	Description
0xE000-0xFFFF	8192	cpu_2764_ic8_rom1_rev1.0f	CRC(84517c3c) (Fluke: 4431)
0xE000-0xFFFF	8192	cpu_2764_ic8_rom1_rev1.0f	CRC(84517c3c) (Fluke: 4431)