Super Mario 2 (J)

ncflagg · Post by **ncflagg** » Wed Nov 21, 2007 12:19 am

I would like to make a Dev cart and need pointed in the right direction. (have soldering experience)

I want to make a cart that I can put Super Mario Bros 2 (the real japenese version) on. I believe it's a 64k PRG 8k CHR MMC 3 Mapper 4? NES-TKROM-10 right?

I've looked for some directions and have come up short.

Any help greatly appreciated.

atari2600a · Post by **atari2600a** » Wed Nov 21, 2007 12:47 am

If you can find the same mapper, it wouldn't be much harder than finding someone to burn the images onto some ROMs for you, & then soldering them in...

http://www.nesreproductions.com/ will do it for $25 plus a mapper-compatible cart. Maybe you can strike a deal for just the ROMs for cheaper if you ask...

ncflagg · Post by **ncflagg** » Wed Nov 21, 2007 11:32 am

Thanks, for that. I would like to use sockets so I can swap chips for other game (I.E. SMB3 hacks). I'm looking for some direction on what socket pins to bend up, solder this pin to than point, possibly with pictures etc.

NotTheCommonDose · Post by **NotTheCommonDose** » Wed Nov 21, 2007 1:14 pm

I have a real mario usa cart I play with a famicom converter from gyromite.

ncflagg · Post by **ncflagg** » Wed Nov 21, 2007 1:34 pm

That's cool. But, I meant the version of Super Mario 2 that came out in Japan before the USA release. The one based on the original Super Mario Bros not Doki Doki Panic (I.E. no Turnip-throwing)

NotTheCommonDose · Post by **NotTheCommonDose** » Wed Nov 21, 2007 1:45 pm

The lost levels? Oh well I have a pirate of that somewhere. I'll see I can find it.

ncflagg · Post by **ncflagg** » Wed Nov 21, 2007 10:43 pm

I found some directions on converting carts to use EPROMS.
http://nesdev.com/NES%20EPROM%20Conversions.txt

TSROM (mapper 4):
PRG socket:
Bend up pins 1, 2, 24, 30 and 31 (or cut tracks 2, 24, 30 and 31)
Solder pin 2 to hole 24 (A16)
Solder pin 24 to GND (OE)
Solder pin 30 to hole 1 (A17)
Solder pin 31 to hole 2 (A18)
CHR socket:
Bend up pins 1, 2, 22, 24, 30, 31 (or cut tracks 2, 22, 24 and 30)
Solder pin 2 to hole 24 (A16)
Solder pin 22 to hole 31 (CE or CHR /A13)
Solder pin 24 to hole 2 (OE or CHR /RD)
Solder pin 30 to hole 1 (A17)

ncflagg · Post by **ncflagg** » Thu Nov 22, 2007 10:23 am

If I've done this right the SMB2(J) rom is 72KB so it should be a 64KB PRG file and an 8KB CHR file correct? Does that correspond to a 27C512 EPROM and a 2764 EPROM? How many nanoseconds should they be?

Where's a good place to get low-profile sockets and EPROMS?