Pleiads 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.

Pleiads (Tehkan, 1981)

Memory Area:phoenix_memory_map

Address Range	Length	Function	Description
0x0000-0x3FFF	16384	ROM
0x4000-0x4FFF	4096	Read Bank, Write	bank1, phoenix_videoram_w (/* 2 pages selected by bit 0 of the video register */)
0x5000-0x53FF	1024	Write	phoenix_videoreg_w
0x5800-0x5BFF	1024	Write	phoenix_scroll_w
0x6000-0x63FF	1024	Device Write	cust, phoenix_sound_device, control_a_w
0x6800-0x6BFF	1024	Device Write	cust, phoenix_sound_device, control_b_w
0x7000-0x73FF	1024	Read Port	IN0 (/* IN0 or IN1 */)
0x7800-0x7BFF	1024	Read Port	DSW0 (/* DSW */)

Memory Area:pleiads_memory_map

Address Range	Length	Function	Description
0x0000-0x3FFF	16384	ROM
0x4000-0x4FFF	4096	Read Bank, Write	bank1, phoenix_videoram_w (/* 2 pages selected by bit 0 of the video register */)
0x5000-0x53FF	1024	Write	pleiads_videoreg_w
0x5800-0x5BFF	1024	Write	phoenix_scroll_w
0x6000-0x63FF	1024	Device Write	pleiads_custom, pleiads_sound_device, control_a_w
0x6800-0x6BFF	1024	Device Write	pleiads_custom, pleiads_sound_device, control_b_w
0x7000-0x73FF	1024	Read Port	IN0 (/* IN0 or IN1 + protection */)
0x7800-0x7BFF	1024	Read Port	DSW0 (/* DSW */)

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:bgtiles

Address Range	Length	Label/Location	Description
0x0000-0x07FF	2048	ic23.bin	CRC(4e30f9e7),IC 45 on real board (Fluke: BA98)
0x0800-0x0FFF	2048	ic24.bin	CRC(5188fc29),IC 44 on real board (Fluke: 3224)

Memory Area:fgtiles

Address Range	Length	Label/Location	Description
0x0000-0x07FF	2048	ic39.bin	CRC(85866607),IC 27 on real board (Fluke: 8D6E)
0x0800-0x0FFF	2048	ic40.bin	CRC(a841d511),IC 26 on real board (Fluke: A181)

Memory Area:maincpu

Address Range	Length	Label/Location	Description
0x0000-0x07FF	2048	ic47.r1	CRC(960212c8) (Fluke: CF57)
0x0800-0x0FFF	2048	ic48.r2	CRC(b254217c) (Fluke: 0EA4)
0x1000-0x17FF	2048	ic47.bin	CRC(87e700bb),IC 49 on real board (Fluke: 779F)
0x1800-0x1FFF	2048	ic48.bin	CRC(2d5198d0),IC 50 on real board (Fluke: D1F1)
0x2000-0x27FF	2048	ic51.r5	CRC(49c629bc) (Fluke: 329F)
0x2800-0x2FFF	2048	ic50.bin	CRC(f1a8a00d),IC 52 on real board (Fluke: A852)
0x3000-0x37FF	2048	ic53.r7	CRC(b5f07fbc) (Fluke: 6C6A)
0x3800-0x3FFF	2048	ic52.bin	CRC(b1b5a8a6),IC 54 on real board (Fluke: F961)

Memory Area:proms

Address Range	Length	Label/Location	Description
0x0000-0x00FF	256	7611-5.33	CRC(e38eeb83),palette low bits (Fluke: FBC4)
0x0100-0x01FF	256	7611-5.26	CRC(7a1bcb1e),palette high bits (Fluke: F041)