Pulsar 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.

Pulsar (Sega, 1981)

Memory Area:pulsar_io_map

Address Range

Length

Function

Description

0x0000-0x007F

128

Write

pulsar_io_w

0x0000

Mirror, Read Port

0x7c, IN0

0x0001	Unknown	Active Low
0x0002	Unknown	Active Low
0x0004	Special	Active High
0x0008	Unused	Active High
0x0008	Off	Active High
0x0000	On	Active High
0x0010	Joystick Down	Active Low
0x0020	Joystick Up	Active Low
0x00c0	Unused	Active Low

0x0001

Mirror, Read Port

0x7c, IN1

0x0001	Unknown	Active Low
0x0002	Unknown	Active Low
0x0004	Special	Active High
0x0008	Special	Active High
0x0010	Joystick Left	Active Low
0x0020	Joystick Right	Active Low
0x00c0	Unused	Active Low

0x0002

Mirror, Read Port

0x7c, IN2

0x0001	Unknown	Active Low
0x0002	Unknown	Active Low
0x0004	Unused	Active High
0x0004	Off	Active High
0x0000	On	Active High
0x0008	Special	Active High
0x0010	Start 1	Active Low
0x0020	Button 1	Active Low
0x00c0	Unused	Active Low

0x0003

Mirror, Read Port

0x7c, IN3

0x0001	Unknown	Active Low
0x0002	Unknown	Active Low
0x0004	Unused	Active High
0x0004	Off	Active High
0x0000	On	Active High
0x0008	Special	Active High
0x0010	Unknown	Active Low
0x0020	Start 2	Active Low
0x00c0	Unused	Active Low

Memory Area:vicdual_dualgame_map

Address Range	Length	Function	Description
0x0000-0x3FFF	16384	Mirror, ROM	0x4000,
0x8000-0x83FF	1024	Mirror, RAM Write, Shared	0x7000, videoram_w, videoram
0x8400-0x87FF	1024	Mirror, RAM	0x7000,
0x8800-0x8FFF	2048	Mirror, RAM Write, Shared	0x7000, characterram_w, characterram

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	790.u33	CRC(5e3816da) (Fluke: 2345)
0x0400-0x07FF	1024	791.u32	CRC(ce0aee83) (Fluke: 976C)
0x0800-0x0BFF	1024	792.u31	CRC(72d78cf1) (Fluke: 81FA)
0x0C00-0x0FFF	1024	793.u30	CRC(42155dd4) (Fluke: 13DF)
0x1000-0x13FF	1024	794.u29	CRC(11c7213a) (Fluke: 7C9E)
0x1400-0x17FF	1024	795.u28	CRC(d2f02e29) (Fluke: 0DF7)
0x1800-0x1BFF	1024	796.u27	CRC(67737a2e) (Fluke: C341)
0x1C00-0x1FFF	1024	797.u26	CRC(ec250b24) (Fluke: D3B1)
0x2000-0x23FF	1024	798.u8	CRC(1d34912d) (Fluke: 165B)
0x2400-0x27FF	1024	799.u7	CRC(f5695e4c) (Fluke: FEE7)
0x2800-0x2BFF	1024	800.u6	CRC(bf91ad92) (Fluke: B5F7)
0x2C00-0x2FFF	1024	801.u5	CRC(1e9721dc) (Fluke: 732D)
0x3000-0x33FF	1024	802.u4	CRC(d32d2192) (Fluke: 8E6B)
0x3400-0x37FF	1024	803.u3	CRC(3ede44d5) (Fluke: ED51)
0x3800-0x3BFF	1024	804.u2	CRC(62847b01) (Fluke: ACBF)
0x3C00-0x3FFF	1024	805.u1	CRC(ab418e86) (Fluke: 89DC)

Memory Area:proms

Address Range	Length	Label/Location	Description
0x0000-0x001F	32	316-0789.u49	CRC(7fc1861f) (Fluke: B98E)

Memory Area:user1

Address Range	Length	Label/Location	Description
0x0000-0x001F	32	316-0206.u14	CRC(9617d796),control PROM (Fluke: D5DA)