Bottom of the Ninth 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.

Bottom of the Ninth (Konami, 1989)

Memory Area:audio_map

Address Range	Length	Function	Description
0x0000-0x7FFF	32768	ROM
0x8000-0x87FF	2048	RAM
0x9000	1	Write	sound_bank_w
0xA000-0xA00D	14	Device Read/Write	k007232_1, k007232_device, read, write
0xB000-0xB00D	14	Device Read/Write	k007232_2, k007232_device, read, write
0xD000	1	Device Read	soundlatch, generic_latch_8_device, read
0xF000	1	Write	nmi_enable_w

Memory Area:main_map

Address Range

Length

Function

Description

0x0000-0x07FF

2048

Read/Write

bottom9_bankedram1_r, bottom9_bankedram1_w

0x0000-0x3FFF

16384

Read/Write

k052109_051960_r, k052109_051960_w

0x1F80

Write

bankswitch_w

0x1F90

Write

bottom9_1f90_w

0x1FA0

Device Write

watchdog, watchdog_timer_device, reset_w

0x1FB0

Device Write

soundlatch, generic_latch_8_device, write

0x1FC0

Write

bottom9_sh_irqtrigger_w

0x1FD0

Read Port

SYSTEM

0x0001	Coin 1	Active Low
0x0002	Coin 2	Active Low
0x0004	Coin 3	Active Low
0x0008	Unused	Active Low
0x0010	Flip_Screen	Active High
0x0010	Off	Active High
0x0000	On	Active High
0x0080	Normal	Active High
0x0000	Auto	Active High

0x1FD1

Read Port

0x1FD2

Read Port

0x1FD3

Read Port

DSW1

0x1FE0

Read Port

DSW2

0x0007	1'00	Active High
0x0006	1'10	Active High
0x0005	1'20	Active High
0x0004	1'30	Active High
0x0003	1'40	Active High
0x0002	1'50	Active High
0x0001	2'00	Active High
0x0000	2'10	Active High
0x0018	00	Active High
0x0010	20	Active High
0x0008	30	Active High
0x0000	40	Active High
0x0060	Difficulty	Active High
0x0060	Easy	Active High
0x0040	Normal	Active High
0x0020	Difficult	Active High
0x0000	Very_Difficult	Active High
0x0080	Demo_Sounds	Active High
0x0080	Off	Active High
0x0000	On	Active High

0x1FF0-0x1FFF

Device Write

k051316, k051316_device, ctrl_w

0x2000-0x27FF

2048

Read/Write, Shared

bottom9_bankedram2_r, bottom9_bankedram2_w, palette

0x4000-0x5FFF

8192

RAM

0x6000-0x7FFF

8192

ROM Bank

bank1

0x8000-0xFFFF

32768

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:audiocpu

Address Range	Length	Label/Location	Description
0x0000-0x7FFF	32768	891j01.g8	CRC(31b0a0a8) (Fluke: 2FCE)
0x0000-0x7FFF	32768	891j01.g8	CRC(31b0a0a8) (Fluke: 2FCE)

Memory Area:k007232_1

Address Range	Length	Label/Location	Description
0x0000-0xFFFF	65536	891e08a	CRC(cef667bf) (Fluke: CA8C)
0x0000-0xFFFF	65536	891e08a	CRC(cef667bf) (Fluke: CA8C)
0x10000-0x1FFFF	65536	891e08b	CRC(f7c14a7a) (Fluke: E8B8)
0x10000-0x1FFFF	65536	891e08b	CRC(f7c14a7a) (Fluke: E8B8)
0x20000-0x2FFFF	65536	891e08c	CRC(756b7f3c) (Fluke: 3536)
0x20000-0x2FFFF	65536	891e08c	CRC(756b7f3c) (Fluke: 3536)
0x30000-0x3FFFF	65536	891e08d	CRC(cd0d7305) (Fluke: 72F9)
0x30000-0x3FFFF	65536	891e08d	CRC(cd0d7305) (Fluke: 72F9)

Memory Area:k007232_2

Address Range	Length	Label/Location	Description
0x0000-0xFFFF	65536	891e04a	CRC(daebbc74) (Fluke: 97BE)
0x0000-0xFFFF	65536	891e04a	CRC(daebbc74) (Fluke: 97BE)
0x10000-0x1FFFF	65536	891e04b	CRC(5ffb9ad1) (Fluke: D1F6)
0x10000-0x1FFFF	65536	891e04b	CRC(5ffb9ad1) (Fluke: D1F6)
0x20000-0x2FFFF	65536	891e04c	CRC(2dbbf16b) (Fluke: C98B)
0x20000-0x2FFFF	65536	891e04c	CRC(2dbbf16b) (Fluke: C98B)
0x30000-0x3FFFF	65536	891e04d	CRC(8b0cd2cc) (Fluke: CE64)
0x30000-0x3FFFF	65536	891e04d	CRC(8b0cd2cc) (Fluke: CE64)

Memory Area:k051316

Address Range	Length	Label/Location	Description
0x0000-0xFFFF	65536	891e07a	CRC(b8d8b939),zoom/rotate (Fluke: 9D99)
0x0000-0xFFFF	65536	891e07a	CRC(b8d8b939),zoom/rotate (Fluke: 9D99)
0x10000-0x1FFFF	65536	891e07b	CRC(83b2f92d) (Fluke: 4360)
0x10000-0x1FFFF	65536	891e07b	CRC(83b2f92d) (Fluke: 4360)

Memory Area:maincpu

Address Range	Length	Label/Location	Description
0x10000-0x1FFFF	65536	891n03.k17	CRC(8b083ff3) (Fluke: 953B)
0x10000-0x1FFFF	65536	891n03.k17	CRC(8b083ff3) (Fluke: 953B)
0x20000-0x27FFF	32768	891-t02.k15	CRC(2c10ced2) (Fluke: 99CD)

Memory Area:proms

Address Range	Length	Label/Location	Description
0x0000-0x00FF	256	891b11.f23	CRC(ecb854aa),priority encoder (not used) (Fluke: DA0B)
0x0000-0x00FF	256	891b11.f23	CRC(ecb854aa),priority encoder (not used) (Fluke: DA0B)