Some Famicom games not dumping

[RascalDungeon]

I recently dumped a batch of Famicom games. Most of them dumped no problem, but a handful of them I have been unable to dump. The problem games are:

Contra
Gradius II
Highway Star
Parodius Da
Salamander

Some of them only dump 1kB files. Others dump the full chips, but the ROMs are bad/corrupt. I had spent a lot of time cleaning every pin/contact in the chain, with no improvement.

Suggestions on how to proceed?

[RascalDungeon]

I am using the latest firmware.

[StanMOI]

Show us PCB of game cartridge, please (frontside/backside)

[RascalDungeon]

I would if I could, but these are Famicom carts and I won't risk opening them. The last time I opened one, it broke the tabs inside and I had to expoy it back together.

[RascalDungeon]

So I opened some carts, broke 4 tabs in the process. Here ya go:

https://imgur.com/a/some-pcbs-bFQ1WRH

[StanMOI]

All seems to be good.
Do "gold finger" has been cleaned with 90° of alcohol too ?

[nsx0r]

All seems to be good.

Well not really: Highway Star is the bootleg version by Kaiser and most likely uses a mapper that is not currently supported by the OSCR.

[StanMOI]

That's why it not working.
Ask Sanni to add this mapper.

[nsx0r]

I just added support for mapper 312 in the code, now it needs testing.
As for the other Konami carts we definitely need more info.

[nsx0r]

That would require some testing and I don't have these cartridges right now, so if you have some time to spare you can join the Discord server and message me.

[handles888]

Something might be wrong with the 14.7 nes.txt. When I tried to dump my Mario 3 rev 1 Famicom cart, it kept coming up as one of those world champion carts. I grabbed the nes.txt from 14.5 and pasted it to the SD card and it started working perfectly again. I didn’t change the firmware on the sanni. It’s still 14.7, I just replaced the nes.txt. I need to do some more testing to make sure that this is the case, but I would give this a shot if I were you.

The 14.7 firmware was pulling correct CRC and checksum, just nes.txt is assigning it the wrong cart.

[RascalDungeon]

How do you get the older nes.txt? I have been trying to figure out how to get it, but can't figure it out.

[RascalDungeon]

Ok, so I was able to put the nes.txt from v14.3 on my SD card and try to dump the carts, but I run into the same issue. I couldn't find nes.txt for v14.5.