Grudge Match Memory Map

Memory Area:audiocpu

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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.

Grudge Match (Bally Midway, 0)

Memory Area:cpu1_map

Address Range	Length	Function	Description
0x0000-0x07FF	2048	RAM, Shared	spriteram
0x0800-0x7FFF	30720	RAM Write, Shared	balsente_videoram_w, videoram
0x8000-0x8FFF	4096	RAM Write, Shared	balsente_paletteram_w, paletteram
0x9000-0x9007	8	Write	balsente_adc_select_w
0x9400-0x9401	2	Read	balsente_adc_data_r
0x9800-0x987F	128	Write	balsente_misc_output_w
0x9880-0x989F	32	Write	balsente_random_reset_w
0x98A0-0x98BF	32	Write	balsente_rombank_select_w
0x98C0-0x98DF	32	Write	balsente_palette_select_w
0x98E0-0x98FF	32	Device Write	watchdog, watchdog_timer_device, reset_w
0x9900	1	Read Port	SWH
0x9901	1	Read Port	SWG
0x9902	1	Read Port	IN0
0x9903	1	Read Port, Write NOP	IN1,
0x9A00-0x9A03	4	Read	balsente_random_num_r
0x9A04-0x9A05	2	Read/Write	balsente_m6850_r, balsente_m6850_w
0x9B00-0x9CFF	512	RAM, Shared	nvram (/* system+cart NOVRAM */)
0xA000-0xBFFF	8192	ROM Bank	bank1
0xC000-0xFFFF	16384	ROM Bank	bank2

Memory Area:cpu2_io_map

Address Range	Length	Function	Description
0x0000-0x0003	4	Read/Write	balsente_counter_8253_r, balsente_counter_8253_w
0x0008-0x000F	8	Read	balsente_counter_state_r
0x0008-0x0009	2	Write	balsente_counter_control_w
0x000A-0x000B	2	Write	balsente_dac_data_w
0x000C-0x000D	2	Write	balsente_register_addr_w
0x000E-0x000F	2	Write	balsente_chip_select_w

Memory Area:cpu2_map

Address Range	Length	Function	Description
0x0000-0x1FFF	8192	ROM
0x2000-0x5FFF	16384	RAM
0x6000-0x7FFF	8192	Write	balsente_m6850_sound_w
0xE000-0xFFFF	8192	Read	balsente_m6850_sound_r

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.

0x10000-0x17FFF

32768

grudge.ab0

CRC(260965ca) (Fluke: 7592)

0x18000-0x1FFFF

32768

grudge.ab4

CRC(c6cd734d) (Fluke: B983)

0x20000-0x27FFF

32768

grudge.cd0

CRC(e51db1f2) (Fluke: 2BDA)

0x28000-0x2FFFF

32768

grudge.cd4

CRC(6b60e47e) (Fluke: 2334)

Address Range	Length	Label/Location	Description
0x0000-0x1FFF	8192	sentesnd	CRC(4dd0a525) (Fluke: B1EC)