Lap By Lap 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.

Lap By Lap (Inder, 1986)

Memory Area:lapbylap_map

Address Range	Length	Function	Description
0x0000-0x1FFF	8192	ROM
0x2000-0x20FF	256	Write	disp_w
0x4000-0x43FF	1024	RAM	(// pair of 2114)
0x4400-0x44FF	256	RAM, Shared	nvram (// pair of 5101, battery-backed)
0x4800-0x480A	11	Read/Write	sw_r,sw_w
0x4900	1	Write	sol_canasta_w
0x4901-0x4907	7	Write	lamp_w
0x4B00	1	Write	sndcmd_lapbylap_w

Memory Area:lapbylap_sub_map

Address Range	Length	Function	Description
0x0000-0x1FFF	8192	ROM
0x8000-0x87FF	2048	RAM	(// 6116)
0x9000	1	Device Write	ay1, ay8910_device, address_w
0x9001	1	Device Read	ay1, ay8910_device, data_r
0x9002	1	Device Write	ay1, ay8910_device, data_w
0xA000	1	Device Write	ay2, ay8910_device, address_w
0xA001	1	Device Read	ay2, ay8910_device, data_r
0xA002	1	Device Write	ay2, ay8910_device, data_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:audiocpu

Address Range	Length	Label/Location	Description
0x0000-0x1FFF	8192	lblsr0.bin	CRC(cbaddf02)

Memory Area:maincpu

Address Range	Length	Label/Location	Description
0x0000-0x0FFF	4096	lblr0.bin	CRC(2970f31a)
0x1000-0x1FFF	4096	lblr1.bin	CRC(94787c10)