nesdev.org

Do you mean you're having trouble running ROM's on SLROM boards? I can't remember any problem with my SLROM devcart.

yes, it is wierd, i made a few with SLROM-05 and 06, and they work fine. when i used an 04 and 03 they had the messed up graphics. i never have a problem with the MMC3 mapper games, so i am wondering what is going on.

I don't know if there is much differences between the revisions of SLROM. Usually revision added coupling capacities, or slightly changed the layout. This should matter few if the game works or not. To personal experience, SNROM-03 always lost saves due to the lack of a coupling capacity on the SRAM, wich was added in SNROM-05.
Maybe it's just a coincidence and your SLROM-03 boards are dirty. Mirroring don't affect characters themselves, it only affect the screen setup. I think it was also a coincidence that your CNROM board worked better after changing the mirroring. Mirroring should only affect the graphics when scrolling, where a lot of glitches should appear on the background, but not on the character itself.

Anyone know where to get the modified Goonies rom? I tried the one mentioned earlier in the thread and keep getting the same garbled graphics.

Goonies (J) [hM03] should do (CNROM hacked goonies). Else if you want to make your own hardware goonies, it shouldn't be hard to modify the CNROM board so that it act like Goonies board, I guess you just have to tie A13 on the CHRROM to A14 on the mapper, and you're done (I'm not sure tough).

Don't understand about the A14 on the mapper. I know where A13 on the eprom is. But what pin would be A14 on the mapper. Or do I tie A13 to A14 on the eprom. Thanks for the help

Sorry my post above is completely wrong you should do a lot more changes if you want to change a CNROM board to goonies mapper. Just hack the game to use CNROM and you're done (no rewiring needed). I think the hack that is already arround works with bus conflicts, so no problem here.

Could you point me in the right direction? I hate to be a pain in butt, but this one is really starting to aggrevate me. It's the one I can't figure out. I've tried the hm03 roms and none of them seem to work even though they say that it uses a cnrom board using tnines.

You tried putting Goonies (J) [hM03] on a CNROM board, and you say it doesn't work ? Are you sure you did it correctly ?

Pretty sure I did. I got your contra cart working and several others. I don't know what I could be doing wrong. I used tnines to split the rom and burned it like any other rom. Put solder on the V pad. and cleaned off the H pad. Even tried it the other way around. Still nothing.

That's weird. Unless you got a different ROM than me, the ROM alredy avoids bus conflicts. To make sure, run your ROM through FCEUltra or FCEUXD, and log all writes to $8000-$ffff. Then check if the game writes where a ROM byte of the same value is stored.
If you get nothing at all (not scrabled graphics or anything) then you should have something wrong on the PRG side.

Still the same problem. Sound works great. I can start the game I can move my guy and everything. But still the scrambled graphics. I'll probably just pick up a Famicom cart and use one of my Gryomite boards. Thanks for the help though. Would it matter if I disabled the CIC chip on board the nes? It hasn't been an issue on any other game. But that's the only thing I've done to my nes.