4 En Raya 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.

4 En Raya (IDSA, 1990)

Memory Area:main_map

Address Range	Length	Function	Description
0x0000-0xFFFF	65536	Read/Write	fenraya_custom_map_r, fenraya_custom_map_w

Memory Area:main_portmap

Address Range

Length

Function

Description

0x0000

Read Port

DSW

0x0001	Difficulty	Active High
0x0001	Easy	Active High
0x0000	Hard	Active High
0x0002	Demo_Sounds	Active High
0x0002	Off	Active High
0x0000	On	Active High
0x0004	30	Active High
0x0000	16	Active High
0x0008	Slow	Active High
0x0000	Fast	Active High
0x0030	Coin_B	Active High
0x0030	1C_1C	Active High
0x0000	2C_3C	Active High
0x0010	1C_3C	Active High
0x0020	1C_4C	Active High
0x00c0	Coin_A	Active High
0x0040	2C_1C	Active High
0x00c0	1C_1C	Active High
0x0000	2C_3C	Active High
0x0080	1C_2C	Active High

0x0001

Read Port

INPUTS

0x0001	Joystick Left	Active Low
0x0002	Joystick Left	Active Low
0x0004	P1 Down	Active Low
0x0008	Joystick Right	Active Low
0x0010	P2 Down	Active Low
0x0020	Joystick Right	Active Low
0x0040	P1 Shot	Active Low
0x0080	P2 Shot	Active Low

0x0002

Read Port

SYSTEM

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

0x0023

Write

sound_data_w

0x0033

Write

sound_control_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:gfx1

Address Range	Length	Label/Location	Description
0x0000-0x1FFF	8192	1.bin	CRC(0e5072fd)
0x0000-0x1FFF	8192	1.bin	CRC(0e5072fd)
0x2000-0x3FFF	8192	2.bin	CRC(2b0a3793) (Fluke: F81E)
0x2000-0x3FFF	8192	2.bin	CRC(2b0a3793) (Fluke: F81E)
0x4000-0x5FFF	8192	3.bin	CRC(f6940836) (Fluke: 7433)
0x4000-0x5FFF	8192	3.bin	CRC(f6940836) (Fluke: 7433)

Memory Area:maincpu

Address Range	Length	Label/Location	Description
0x0000-0x7FFF	32768	5.bin	CRC(cf1cd151) (Fluke: 098E)
0x0000-0x7FFF	32768	5.bin	CRC(cf1cd151)
0x8000-0xBFFF	16384	4.bin	CRC(f9ec1be7) (Fluke: 0CE9)
0x8000-0xBFFF	16384	4.bin	CRC(f9ec1be7) (Fluke: 0CE9)

Memory Area:pal_prom

Address Range	Length	Label/Location	Description
0x0000-0x001F	32	1.bpr	CRC(dcbd2352),system control: used for memory mapping (Fluke: DE21)
0x0000-0x001F	32	1.bpr	CRC(dcbd2352),system control: used for memory mapping (Fluke: DE21)