Search found 76 matches

by Karatorian
Fri Oct 25, 2013 12:01 pm
Forum: NES Hardware and Flash Equipment
Topic: SOLVED - Debugging an MMC3 Dev Cart
Replies: 9
Views: 4292

Re: Debugging an MMC3 Dev Cart

I was able to solder leads onto the PRG rom I clipped off the donor board and read back the correct data, so I've ruled out my EEPROM programming setup as the problem. Must still be something wrong with my wiring. I've found that it's actually required to tie /CE to ground for most EPROMs due to tim...
by Karatorian
Thu Oct 10, 2013 5:23 pm
Forum: NESdev
Topic: Super Mario Bros on MMC3
Replies: 26
Views: 12779

Re: Super Mario Bros on MMC3

Our solution to the patching problem was crossing our fingers and hoping to not get sued. Not the best strategy, but so far, so good.

Considering that source code was also made available, we couldn't exactly keep our hands clean anyway.
by Karatorian
Thu Oct 10, 2013 5:18 pm
Forum: NESdev
Topic: So... How do I know if a mapper actually supports 4-screen?
Replies: 10
Views: 3434

Re: So... How do I know if a mapper actually supports 4-scre

Pokun wrote:Off topic, but I don't see why you think such a well made game is a bad game.
From what I can tell, Bregalad thinks all games suck...
by Karatorian
Thu Oct 10, 2013 4:36 pm
Forum: NES Hardware and Flash Equipment
Topic: SOLVED - Debugging an MMC3 Dev Cart
Replies: 9
Views: 4292

Re: Debugging an MMC3 Dev Cart

Are the original Mask ROMs still intact? If so, you could verify by dumping them. Unfortunately, the original mask ROMs aren't entirely intact. I took the easy route to desoldering them and clipped the pins off. There's probably enough of the pins left to solder some wires onto, but it'd be a prett...
by Karatorian
Mon Oct 07, 2013 11:48 pm
Forum: NES Hardware and Flash Equipment
Topic: SOLVED - Debugging an MMC3 Dev Cart
Replies: 9
Views: 4292

Re: Debugging an MMC3 Dev Cart

Thanks a bunch lidnariq for messing about with hardware for me. My "bench supply" is a hacked PC power supply, so I don't have the option to put out arbitrary voltages. (I should probably hack up something to fix that.) You've eliminated two of the potential issues, so I can concentrate on the rest....
by Karatorian
Mon Oct 07, 2013 9:14 pm
Forum: 2011 NESdev Competition
Topic: Streemerz bundle
Replies: 190
Views: 168772

Re: Streemerz bundle

The website says the second run is a preorder, but it also says that it'll start shipping in early August. As it's now September, are orders now shipping, or has there been some sort of delay? In other words, if I order one tonight, will it ship shortly, or will I have to wait?
by Karatorian
Mon Oct 07, 2013 4:52 pm
Forum: General Stuff
Topic: Reproduction carts board/forum/section
Replies: 78
Views: 133176

Re: Reproduction carts board/forum/section

I'm not entirely sure how I feel about this. But I voted other, just so I could drop in my two bits here. The assumption that all questions about rewiring donor carts are about making reproductions and piracy is false. One project I'm working on right now is an MMC3 dev cart. I don't actually have a...
by Karatorian
Mon Oct 07, 2013 3:40 pm
Forum: NES Hardware and Flash Equipment
Topic: SOLVED - Debugging an MMC3 Dev Cart
Replies: 9
Views: 4292

SOLVED - Debugging an MMC3 Dev Cart

I built a dev cart out of an NES-TLROM-03 board ( this one in particular), but it doesn't seem to work and I'd like some help I removed the roms and replaced them with 28 pin sockets (from which I'd clipped pins 1, 22, and 27 to support rewiring). I then ran jumper wires as follows: Board Socket PRG...
by Karatorian
Sat Oct 05, 2013 12:22 pm
Forum: NESdev
Topic: Super Mario Bros on MMC3
Replies: 26
Views: 12779

Re: Super Mario Bros on MMC3

In an SMB hack I worked on, we expanded the ROM by moving the music data and code to a dedicated bank. This freed up a huge amount of space for lots of hacks. The reset vector was changed to point to the mapper initialization routine, which jumped to the original init routine once it was setup. The ...
by Karatorian
Tue Oct 01, 2013 7:02 am
Forum: NES Music
Topic: Intentional PPU hum...
Replies: 40
Views: 22158

Re: Intentional PPU hum...

I don't know much about the signal levels on RCA cables, but what would happen if you took a Y cable (I've got one I use to split the mono audio to left and right), and used it to mix the audio out and video out together? Would this be safe? Would the levels be such that you could usefully combine P...
by Karatorian
Sat Mar 10, 2012 4:59 am
Forum: nesdevWiki
Topic: Welcome your new wiki overlord (?)
Replies: 13
Views: 10681

The angle Tepples mentioned of automagically tying wiki accounts to BB accounts would be the best solution if it can be made to work.
by Karatorian
Thu Mar 08, 2012 7:02 pm
Forum: nesdevWiki
Topic: New users or not?
Replies: 23
Views: 18301

While I don't know all the technical details behind phpBB and MediaWiki, it seems like it ought to be possible to tie the wiki user accounts directly to the board accounts. So only board accounts in good standing even have wiki accounts. That would allow your existing spam fighting to also combat wi...
by Karatorian
Wed Mar 07, 2012 7:56 pm
Forum: General Stuff
Topic: Is this an unusual hobby (making useless schematic diagrams)
Replies: 11
Views: 4925

Not at all strange, as long as you're comfortable being a geek. Heck, just the other day I designed a couple of block diagrams of a mapper I don't intend to build (and one of which was wrong), just to illustrate a discussion.
by Karatorian
Mon Mar 05, 2012 7:53 pm
Forum: NESdev
Topic: Hack working on FCEUX, but not on Nestopia/real console
Replies: 24
Views: 11455

Well, you'll have to initialize it for it to function correctly on hardware. Real SRAM is essentially random on a cold boot and keeps the old value (probably) on a warm boot.
by Karatorian
Mon Mar 05, 2012 7:34 am
Forum: NESdev
Topic: Hack working on FCEUX, but not on Nestopia/real console
Replies: 24
Views: 11455

Have you tried Nintendulator? It works fine on Nintendulator so that doesn't help me. I'm looking at your DTE routine, but I'm not seeing anything the mapper could be interpreting as mapper writes. However, I'm probably missing something. What assembler is this written for? I ask because the "$=$FF...