Mega Double Poker Memory Map

Contributors
Contributors
- Contributor Account
- Sign Up
On-Line Databases
On-Line Databases
Main
Main
Education
Education
My Restorations
My Restorations
- Restorations
- Conversions
Restoring Games
Restoring Games
Repairing Games
Repairing Games
Resources
Resources
Miscellaneous
Miscellaneous

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.

Mega Double Poker (Blitz System Inc., 1990)

Memory Area:mcu_map

Address Range	Length	Function	Description
0x0080-0x07FF	1920	ROM

Memory Area:megadpkr_map

Address Range

Length

Function

Description

0x0000-0x07FF

2048

RAM

(//AM_SHARE("nvram") /* battery backed RAM */)

0x0844-0x0847

Device Read/Write

pia0, pia6821_device, read, write

0x0848-0x084B

Device Read/Write

pia1, pia6821_device, read, write

0x0001	Unused	Active Low
0x0002	Unused	Active Low
0x0004	Unused	Active Low
0x0008	Unused	Active Low
0x0010	Off	Active High
0x0000	On	Active High
0x0020	Off	Active High
0x0000	On	Active High
0x0040	Off	Active High
0x0000	On	Active High
0x0080	Off	Active High
0x0000	On	Active High

0x1000-0x13FF

1024

RAM Write, Shared

megadpkr_videoram_w, videoram

0x10F4-0x10F7

Device Read/Write

pia0, pia6821_device, read, write

0x10F8-0x10FB

Device Read/Write

pia1, pia6821_device, read, write

0x0001	Unused	Active Low
0x0002	Unused	Active Low
0x0004	Unused	Active Low
0x0008	Unused	Active Low
0x0010	Off	Active High
0x0000	On	Active High
0x0020	Off	Active High
0x0000	On	Active High
0x0040	Off	Active High
0x0000	On	Active High
0x0080	Off	Active High
0x0000	On	Active High

0x1800-0x1BFF

1024

RAM Write, Shared

megadpkr_colorram_w, colorram

0xC000-0xFFFF

16384

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:cpubank

Address Range	Length	Label/Location	Description
0x8000-0xFFFF	32768	mega-3.u3	CRC(ff0a46c6)

Memory Area:maincpu

Address Range	Length	Label/Location	Description
0x8000-0xFFFF	32768	mega-2.u2	CRC(2b133b92)

Memory Area:mcu

Address Range	Length	Label/Location	Description
0x0000-0x07FF	2048	mega-1.u1

Memory Area:proms

Address Range	Length	Label/Location	Description
0x0000-0x00FF	256	m3-7611-5.7d	CRC(7f31066b) (Fluke: 4532)
0x0000-0x00FF	256	m3-7611-5.7d	CRC(7f31066b) (Fluke: 4532)