Psycho-Nics Oscar 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.

Psycho-Nics Oscar (Data East USA, 1988)

Memory Area:oscar_map

Address Range	Length	Function	Description
0x0000-0x0EFF	3840	RAM, Shared	share1
0x0F00-0x0FFF	256	RAM
0x1000-0x1FFF	4096	RAM, Shared	share2
0x2000-0x27FF	2048	RAM Write, Shared	dec8_videoram_w, videoram
0x2800-0x2FFF	2048	Device Read/Write	tilegen1, deco_bac06_device, pf_data_8bit_r, pf_data_8bit_w
0x3000-0x37FF	2048	RAM, Shared	spriteram (/* Sprites */)
0x3800-0x3BFF	1024	RAM Device Write, Shared	palette, palette_device, write, palette
0x3C00	1	Read Port	IN0
0x3C00-0x3C07	8	Device Write	tilegen1, deco_bac06_device, pf_control0_8bit_w
0x3C01	1	Read Port	IN1
0x3C02	1	Read Port	IN2 (/* VBL & coins */)
0x3C03	1	Read Port	DSW0 (/* Dip 1 */)
0x3C04	1	Read Port	DSW1
0x3C10-0x3C1F	16	Device Write	tilegen1, deco_bac06_device, pf_control1_8bit_w
0x3C80	1	Write	dec8_mxc06_karn_buffer_spriteram_w (/* DMA */)
0x3D00	1	Write	dec8_bank_w (/* BNKS */)
0x3D80	1	Write	dec8_sound_w (/* SOUN */)
0x3E00	1	Write NOP	(/* COINCL */)
0x3E80-0x3E83	4	Write	oscar_int_w
0x4000-0x7FFF	16384	ROM Bank	bank1
0x8000-0xFFFF	32768	ROM

Memory Area:oscar_s_map

Address Range	Length	Function	Description
0x0000-0x05FF	1536	RAM
0x2000-0x2001	2	Device Write	ym1, ym2203_device, write
0x4000-0x4001	2	Device Write	ym2, ym3526_device, write
0x6000	1	Device Read	soundlatch, generic_latch_8_device, read
0x8000-0xFFFF	32768	ROM

Memory Area:oscar_sub_map

Address Range	Length	Function	Description
0x0000-0x0EFF	3840	RAM, Shared	share1
0x0F00-0x0FFF	256	RAM
0x1000-0x1FFF	4096	RAM, Shared	share2
0x3E80-0x3E83	4	Write	oscar_int_w
0x4000-0xFFFF	49152	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
0x8000-0xFFFF	32768	ed12	CRC(432031c5) (Fluke: 3E17)

Memory Area:gfx1

Address Range	Length	Label/Location	Description
0x0000-0x3FFF	16384	ed08	CRC(308ac264) (Fluke: 8BC7)

Memory Area:gfx2

Address Range	Length	Label/Location	Description
0x0000-0xFFFF	65536	ed04	CRC(416a791b) (Fluke: 5050)
0x20000-0x2FFFF	65536	ed05	CRC(fcdba431) (Fluke: 0185)
0x40000-0x4FFFF	65536	ed06	CRC(7d50bebc) (Fluke: 1932)
0x60000-0x6FFFF	65536	ed07	CRC(8fdf0fa5) (Fluke: E159)

Memory Area:gfx3

Address Range	Length	Label/Location	Description
0x0000-0xFFFF	65536	ed01	CRC(d3a58e9e) (Fluke: F783)
0x20000-0x2FFFF	65536	ed03	CRC(4fc4fb0f) (Fluke: D81C)
0x40000-0x4FFFF	65536	ed00	CRC(ac201f2d) (Fluke: 75DF)
0x60000-0x6FFFF	65536	ed02	CRC(7ddc5651) (Fluke: 1634)

Memory Area:maincpu

Address Range	Length	Label/Location	Description
0x0000-0xFFFF	65536	ed11	CRC(10e5d919) (Fluke: 2533)
0x8000-0xFFFF	32768	ed10	CRC(f9b0d4d4) (Fluke: 36BF)
0x10000-0x1FFFF	65536	ed09	CRC(e2d4bba9) (Fluke: 38F5)

Memory Area:mcu

Address Range	Length	Label/Location	Description
0x0000-0x0FFF	4096	id8751h.mcu

Memory Area:proms

Address Range	Length	Label/Location	Description
0x0000-0x01FF	512	du-13.bin	CRC(bea1f87e),Priority (Not yet used) (Fluke: 158A)