Champion Base Ball 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.

Champion Base Ball (Alpha Denshi Co., 1983)

Memory Area:champbas_map

Address Range	Length	Function	Description
0x0000-0x5FFF	24576	ROM
0x7000-0x7001	2	Device Write	ay1, ay8910_device, data_address_w
0x8000-0x87FF	2048	RAM Write, Shared	tilemap_w, vram
0x8800-0x8FFF	2048	RAM, Shared	mainram
0xA000	1	Write	irq_enable_w
0xA000	1	Read Port	P1
0xA001	1	Write NOP	(// !WORK board output (no use?))
0xA002	1	Write	gfxbank_w
0xA003	1	Write	flipscreen_w
0xA004	1	Write	palette_bank_w
0xA005	1	Write NOP	(// n.c.)
0xA006	1	Write NOP	(// no MCU)
0xA007	1	Write NOP	(// no MCU)
0xA040	1	Read Port	P2
0xA060-0xA06F	16	Write Only, Shared	spriteram
0xA080	1	Device Write	soundlatch, generic_latch_8_device, write
0xA080	1	Mirror, Read Port	0x0020, DSW
0xA0C0	1	Read Port	SYSTEM
0xA0C0	1	Device Write	watchdog, watchdog_timer_device, reset_w

Memory Area:champbas_sound_map

Address Range	Length	Function	Description
0x0000-0x5FFF	24576	ROM
0x6000	1	Mirror, Device Read	0x1fff, soundlatch, generic_latch_8_device, read
0x8000	1	Mirror, Write NOP	0x1fff, (// 4-bit return code to main CPU (not used))
0xA000	1	Mirror, Device Write	0x1fff, soundlatch, generic_latch_8_device, clear_w
0xC000	1	Mirror, Device Write	0x1fff, dac, dac_byte_interface, write
0xE000-0xE3FF	1024	Mirror, RAM	0x1c00,

Memory Area:champbasj_map

Address Range	Length	Function	Description
0x6000-0x63FF	1024	Device Read/Write	alpha_8201, alpha_8201_device, ext_ram_r, ext_ram_w
0xA006	1	Write	mcu_start_w
0xA007	1	Write	mcu_switch_w

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:alpha_8201:mcu

Address Range	Length	Label/Location	Description
0x0000-0x1FFF	8192	alpha-8201_44801a75_2f25.bin	CRC(b77931ac) (Fluke: 3908)

Memory Area:audiocpu

Address Range	Length	Label/Location	Description
0x0000-0x1FFF	8192	16.2k	CRC(24c482ee) (Fluke: A3E5)
0x0000-0x1FFF	8192	16.2k	CRC(24c482ee) (Fluke: A3E5)
0x2000-0x3FFF	8192	17.2l	CRC(f10b148b) (Fluke: FA73)
0x2000-0x3FFF	8192	17.2l	CRC(f10b148b) (Fluke: FA73)
0x4000-0x5FFF	8192	18.2n	CRC(2dc484dd) (Fluke: 906A)
0x4000-0x5FFF	8192	18.2n	CRC(2dc484dd) (Fluke: 906A)

Memory Area:gfx1

Address Range	Length	Label/Location	Description
0x0000-0x1FFF	8192	14.5e	CRC(1b8202b3) (Fluke: 13F1)
0x0000-0x1FFF	8192	14.5e	CRC(1b8202b3) (Fluke: 13F1)

Memory Area:gfx2

Address Range	Length	Label/Location	Description
0x0000-0x1FFF	8192	15.5g	CRC(a67c0c40) (Fluke: F00D)
0x0000-0x1FFF	8192	15.5g	CRC(a67c0c40) (Fluke: F00D)

Memory Area:maincpu

Address Range	Length	Label/Location	Description
0x0000-0x1FFF	8192	11.2e	CRC(e2dfc166) (Fluke: 3B54)
0x2000-0x3FFF	8192	12.2g	CRC(7b4e5faa) (Fluke: 6981)
0x4000-0x5FFF	8192	13.2h	CRC(b201e31f) (Fluke: E6C7)

Memory Area:proms

Address Range	Length	Label/Location	Description
0x0000-0x001F	32	1e.bpr	CRC(f5ce825e),palette (Fluke: BC33)
0x0000-0x001F	32	1e.bpr	CRC(f5ce825e),palette (Fluke: BC33)
0x0020-0x011F	256	5k.bpr	CRC(2e481ffa),look-up table (Fluke: 272A)
0x0020-0x011F	256	5k.bpr	CRC(2e481ffa),look-up table (Fluke: 272A)
0x0020-0x011F	256	5k.bpr	CRC(2e481ffa),look-up table (Fluke: 272A)