Bandai Famicom board maskrom pinout?

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Nesmodder82
Posts: 7
Joined: Fri Nov 27, 2020 11:26 am

Bandai Famicom board maskrom pinout?

Post by Nesmodder82 »

I'm trying to chip swap my copy of Dragon Ball Z: Kyoushuu! Saiyajin with an english patched version and I can't seem to figure out the mask rom pin out. I've tried standard JDEC and the NES maskrom pin out for their 256k maskroms but its not working. The game loads, music plays and the game accepts inputs but the graphics are just garbage. Sprites are where they're supposed to be but they're just garbage. Does this mean the PRG is wired correctly but the CHR is not or what I've never done this type of board before. Ive de soldered the CHR and verified the programming its good 100 exact match. I'm using the translation from https://www.romhacking.net/translations/647/. It works fine in my emulator but i cant find any info on maskrom pin outs for the PCB Class BANDAI-LZ93D50+24C01 and Mapper 159. I'm using M27C2001 for eproms. Any help would be greatly appreciated. :D
lidnariq
Posts: 11432
Joined: Sun Apr 13, 2008 11:12 am

Re: Bandai Famicom board maskrom pinout?

Post by lidnariq »

You'll have to figure it out yourself. At least we already have a pinout for the mapper IC itself: https://www.nesdev.org/wiki/Bandai_LZ93D50_pinout
Nesmodder82
Posts: 7
Joined: Fri Nov 27, 2020 11:26 am

Re: Bandai Famicom board maskrom pinout?

Post by Nesmodder82 »

Cool thank you so much. :beer: Just to be clear I need to check for continuity between the mapper pins and the CHR and PRG holes on the board to figure out what signal goes where right? I'm just making sure I understand this process correctly. I always wondered how the other board maskroms pinouts were figured out. This would totally makes sense.
lidnariq
Posts: 11432
Joined: Sun Apr 13, 2008 11:12 am

Re: Bandai Famicom board maskrom pinout?

Post by lidnariq »

Yeah - for each of the pins on the mask ROM, figure out what other pin it goes to - might be mapper, might be card edge.
Nesmodder82
Posts: 7
Joined: Fri Nov 27, 2020 11:26 am

Re: Bandai Famicom board maskrom pinout?

Post by Nesmodder82 »

Ok after much Buzzing with a multi-meter the pin out is an exact match for NES 256k mask roms. On further inspection it looks like I just lifted pin 22 as well as pin 24 for some reason. In my defense I was tired and I'm not a smart man.... :roll: Dosen't matter though because now I know how to reverse engineer the mask rom sockets in all the boards so wooooooooooooooo! :D Thanks again that was fun/ Sorry to bother. Also the game works great now that pin 22 of CHR isn't floating. :oops:
Nesmodder82
Posts: 7
Joined: Fri Nov 27, 2020 11:26 am

Re: Bandai Famicom board maskrom pinout?

Post by Nesmodder82 »

I Figured this out as well for the FCG-2 boards. Posting it here. I'm gonna do another LZ93D50 board next so I'll chart that one as well later and post it here for anyone else whose interested in translating their DBZ famicom games.

Bandai Dragon Ball: Dai Maou Fukkatsu or (Bandai FCG-2) MaskRom Pinout

PCB CHR & PRG are 28 Hole M27C2001 is 32 pin some modification must be done so (Pin) refers to 32 pin layout (Hole) refers to 28 pin layout. I/E Pin 16 goes in hole 14 as both are ground. Some case modification had to be done as well. The center plastic stud had to be cut in half down the middle to accommodate for the larger chip size. I would not recommend removing this stud completely as it is load bearing when the cartridge is inserted into the system.

CHR

A15 - |01 28| - +5v
A12 - |02 27| - A14
A7 - |03 26| - A13
A6 - |04 25| - A8
A5 - |05 24| - A9
A4 - |06 23| - A11
A3 - |07 22| - A16
A2 - |08 21| - A10
A1 - |09 20| - CE/
A0 - |10 19| - D7
D0 - |11 18| - D6
D1 - |12 17| - D5
D2 - |13 16| - D4
GND - |14 15| - D3
-------
Wiring for M27C2001 CHR Lift Pins 1,2,24,30,31,32 Pin 2 - Hole 22* Pin 32 - Hole 28 (or +5v)* Pin 24 - Hole 16 (or GND)
PRG

A15 - |01 28| - +5v
A12 - |02 27| - A14
A7 - |03 26| - A13
A6 - |04 25| - A8
A5 - |05 24| - A9
A4 - |06 23| - A11
A3 - |07 22| - A16
A2 - |08 21| - A10
A1 - |09 20| - CE/
A0 - |10 19| - D7
D0 - |11 18| - D6
D1 - |12 17| - D5
D2 - |13 16| - D4
GND - |14 15| - D3
-------

Wiring for M27C2001 PRG Lift Pins 1,2,24,30,31,32 Pin 2 - Hole 22* Pin 32 - Hole 28 (or +5v) *Pin 30 - Pin 40 of FCG-2 Mapper (A17) *Pin 24 - Hole 16 (GND)
EDIT :Formatting
ndbytes
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Joined: Wed Apr 20, 2022 9:57 am

Re: Bandai Famicom board maskrom pinout?

Post by ndbytes »

Do you have any plans doing some other of Bandai boards?
Nesmodder82
Posts: 7
Joined: Fri Nov 27, 2020 11:26 am

Re: Bandai Famicom board maskrom pinout?

Post by Nesmodder82 »

So on further inspection I found that all of the Bandai boards I have so far match the NES maskrom pin outs found here https://www.nesdev.com/NES%20ROM%20Pinouts.txt which are sorted by size and type. This pin out list can be used to chip swap translation patches in all the boards I have. Unfortunately Dragon ball 3: Gokuu Den does not have a proper translation that I could find yet but the other 5 games in the series do.
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