Joshi Volleyball 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.

Joshi Volleyball (Allumer / Taito Corporation, 1983)

Memory Area:cpu1_map

Address Range	Length	Function	Description
0x0000-0x8FFF	36864	ROM
0x9000-0x9FFF	4096	RAM
0xA000-0xA37F	896	RAM
0xA380-0xA3FF	128	RAM, Shared	spritetile_ram
0xA400-0xA77F	896	RAM
0xA780-0xA7FF	128	RAM, Shared	spritexy_ram
0xA980	1	Write	charbank_w
0xAA80	1	Write	videoctrl_w (/* flip screen, char palette bank */)
0xAB00	1	Write	scroll_w
0xAB80-0xABFF	128	Write Only, Shared	spriteattram
0xB000-0xB7FF	2048	RAM Write, Shared	videoram_w, videoram

Memory Area:josvolly_cpu1_io_map

Address Range	Length	Function	Description
0x007E-0x007F	2	Device Read/Write	josvolly_8741, josvolly8741_4pack_device, read_0, write_0

Memory Area:josvolly_cpu2_io_map

Address Range	Length	Function	Description
0x0000	1	Read/Write	fake_0_r, ay8910_control_port_0_w
0x0001	1	Device Read/Write	ay1, ay8910_device, data_r, data_w
0x0040	1	Read/Write	fake_1_r, ay8910_control_port_1_w
0x0041	1	Device Read/Write	ay2, ay8910_device, data_r, data_w
0x0081	1	Device Write	josvolly_8741, josvolly8741_4pack_device, nmi_enable_w
0x00C1	1	Read/Write NOP	(// irq clear)

Memory Area:josvolly_cpu2_map

Address Range

Length

Function

Description

0x0000-0x3FFF

16384

ROM

0x4000-0x43FF

1024

RAM, Shared

cpu2_ram

0x8000

Read Port

IN1 (// 1PL)

0x0001	Joystick Right	Active Low
0x0002	Joystick Left	Active Low
0x0004	Joystick Up	Active Low
0x0008	Joystick Down	Active Low
0x0010	Button 1	Active Low
0x0020	Button 2	Active Low
0x0040	Unknown	Active High
0x0080	Unknown	Active High

0x8001

Read Port

IN2 (// 2PL / ACK)

0x0001	Joystick Right	Active Low
0x0002	Joystick Left	Active Low
0x0020	Joystick Up	Active Low
0x0010	Joystick Down	Active Low
0x0004	Button 1	Active Low
0x0008	Button 2	Active Low
0x0040	Unknown	Active High
0x0080	Unknown	Active High

0x8002

Read Port

IN0 (// START)

0x0001	Start 2	Active Low
0x0002	Start 1	Active Low
0x0004	Coin 2	Active Low
0x0008	Coin 1	Active Low
0x0010	Unknown	Active High
0x0020	Unknown	Active High
0x0040	Unknown	Active High
0x0080	Unknown	Active High

0xA000-0xA001

Device Read/Write

josvolly_8741, josvolly8741_4pack_device, read_1, write_1

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:audiocpu

Address Range	Length	Label/Location	Description
0x0000-0x0FFF	4096	aa3-12.2h	CRC(3796bbf6) (Fluke: 1652)
0x2000-0x3FFF	8192	aa0-13.2j	CRC(58cc89ac) (Fluke: 4258)

Memory Area:gfx1

Address Range	Length	Label/Location	Description
0x0000-0x1FFF	8192	aa0-10.9n	CRC(207c4f42),tiles (Fluke: 9BDD)
0x2000-0x2FFF	4096	aa1-11.9p	CRC(c130464a) (Fluke: E1AB)

Memory Area:gfx2

Address Range	Length	Label/Location	Description
0x0000-0x1FFF	8192	aa0-6.9e	CRC(c2c2401a),sprites (Fluke: 0F6C)

Memory Area:gfx3

Address Range	Length	Label/Location	Description
0x0000-0x1FFF	8192	aa0-7.9f	CRC(da836231) (Fluke: 91AD)
0x2000-0x3FFF	8192	aa0-8.9h	CRC(a0426d57) (Fluke: 5A9E)

Memory Area:maincpu

Address Range	Length	Label/Location	Description
0x0000-0x1FFF	8192	aa2-1.2c	CRC(27f740a5) (Fluke: 17B8)
0x2000-0x3FFF	8192	aa1-2.2d	CRC(3e02e3e1) (Fluke: 86AF)
0x4000-0x5FFF	8192	aa0-3.2e	CRC(72843ffe) (Fluke: 0D18)
0x6000-0x7FFF	8192	aa1-4.2f	CRC(22c1466e) (Fluke: 513A)

Memory Area:mcu

Address Range	Length	Label/Location	Description
0x0000-0x03FF	1024	aa003.bin	CRC(68b399d9)

Memory Area:proms

Address Range	Length	Label/Location	Description
0x0000-0x00FF	256	a1.10k	CRC(09f7b56a),palette red? (Fluke: 7D6F)
0x0100-0x01FF	256	a2.9k	CRC(852eceac),palette green? (Fluke: 88D5)
0x0200-0x02FF	256	a3.9j	CRC(1312718b),palette blue? (Fluke: AFCD)
0x0300-0x03FF	256	a4.8c	CRC(1dcec967),sprite lookup table (Fluke: EB9D)
0x0400-0x041F	32	003.4e	CRC(43a548b8),address decoder? not used (Fluke: 5A45)
0x0420-0x043F	32	004.4d	CRC(43a548b8),address decoder? not used (Fluke: 5A45)
0x0440-0x045F	32	005.3h	CRC(e8d6dec0),address decoder? not used (Fluke: 4A8D)

Memory Area:user1

Address Range	Length	Label/Location	Description
0x0000-0x1FFF	8192	aa0-14.4j	CRC(436fe91f) (Fluke: E663)