Miracle Derby - Ascot 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.

Miracle Derby - Ascot (Home Data, 1988)

Memory Area:cpu0_map

Address Range	Length	Function	Description
0x0000-0x7FFF	32768	ROM

Memory Area:cpu1_map

Address Range	Length	Function	Description
0x0000-0x3FFF	16384	RAM	(// videoram)
0x4000-0x5FFF	8192	RAM
0x6000-0x6FFF	4096	RAM	(/* work ram */)
0x7000-0x77FF	2048	RAM
0x7FFE	1	Read NOP	(//watchdog)
0x8000-0xFFFF	32768	ROM

Memory Area:cpu2_map

Address Range	Length	Function	Description
0x0000-0x3FFF	16384	RAM Write, Shared	mrokumei_videoram_w, videoram
0x4000-0x5FFF	8192	RAM
0x6000-0x6FFF	4096	RAM	(/* work ram */)
0x7000-0x77FF	2048	RAM
0x7800	1	Read/Write	mirderby_prot_r, mirderby_prot_w (// protection check? (or sound comms?))
0x7FFE	1	Read NOP	(//watchdog)
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:cpu0

Address Range	Length	Label/Location	Description
0x2000-0x7FFF	24576	x70_a11.1g	CRC(b394eef7) (Fluke: 8B66)

Memory Area:cpu1

Address Range	Length	Label/Location	Description
0x0000-0xFFFF	65536	x70_c01.14e	CRC(d79d072d) (Fluke: 1D68)

Memory Area:gfx1

Address Range	Length	Label/Location	Description
0x0000-0x7FFF	32768	x70_a03.8g	CRC(4e298b2d) (Fluke: ED04)

Memory Area:gfx2

Address Range	Length	Label/Location	Description
0x0000-0x1FFFF	131072	x70_a04.5g	CRC(14392fdb) (Fluke: 15F3)

Memory Area:maincpu

Address Range	Length	Label/Location	Description
0x8000-0xFFFF	32768	x70_b02.12e	CRC(76c9bb6f) (Fluke: 2A03)

Memory Area:proms

Address Range	Length	Label/Location	Description
0x0000-0x00FF	256	x70a07.8l	CRC(7d4c9712) (Fluke: 97A9)
0x0100-0x01FF	256	x70a08.7l	CRC(c4e77174) (Fluke: 29E6)
0x0200-0x02FF	256	x70a09.6l	CRC(d0187957) (Fluke: CBBF)