nesdev.org

I have RE'ed the script systems for Ultima 4 and 5. They use a more limited scripting system than what you have described, so that's probably not going to be of much use to you :D My opinion is that if you don't care about internationalization then one-byte codes should be fine. This gives you 128 p...

Any kind of time frame on this? I would really like to know before I drop $100 on an EEPROM programmer and an MMC1 dev board.

Thanks for all of your hard work!

IIRC, that's SNROM->SUROM, right? Hehe. But here's pinout to Mask ROMS. Will need rewired. http://nesdev.com/NES%20ROM%20Pinouts.txt Thanks! I missed that link. None of the other documents specifically listed the 256KB chip. Looking at this there are a number of differences I will need to work arou...

Let me first say that I know enough about EE to be dangerous :D Can someone who knows a thing or two about this tell me if my plan is sound? 1. Purchase an Ultima: Exodus cart from a local reseller (there are plenty, and this game bites). 2. Purchase 512K Flash ROMs from Digikey (and a ZIF socket). ...

Quote: I am using a JSR / RTS for the collision test. I wounder if in-lining this would help much. JSR/RTS inside a loop could add to alot of extra time. I tend to inline everything that is only done in a single place... Hell, I'll even duplicate a routine if using it inlined results in significant...

Many older games (like the Ultima series) establish tile ranges, and every tile within a particular range has a different function. An example range map might look like this: $00 - $3f Collide, flat $40 - $5f Collide, Slope Down Left $60 - $7f Collide, Slope Down Right $80 - $8f Liquid surface $90 -...

OK, I'm verging on thread-jacking at this point :D I'll turn the conversation more generic. Are you all using the entire sprite area as the bounding rectangle or are you using X and Y offsets with a width and height? I am doing the latter for more accurate collision detection, but it eats CPU time d...

This has been a very timely discussion as I am implementing collision detection this week :D Here is my approach, but it is taking 42 scan lines for 8 enemies, 5 bullets and 1 player. I'd love some advice on how I can improve this. I am basically implementing the collision grouping idea of the OP bu...

Hey, maybe you could use that to seed your PRNG :D Put seven different seed values as the first byte of your low seven banks, then on power up lda $8000 and use that as your seed. Seriously though, you should just be able to solder a wire from the Write Enable pin on the edge connector to the Write ...

Thank you all for your input! The discussion has been very valuable to me. I've been given permission by the Wife to purchase a top-loader and a PowerPak soon, provided I get new glasses first

Thank again! Look for my alpha demo on the homebrew board soon!

$90 USD for a top-loader, $45 USD for a deck. Deck loaders drive me insane though

So I guess it's not a fast cycle time I am really after. I just want to find the most cost-effective way of testing on real hardware. I could swing the Power Pak. Does anyone have experience with how the Power Pak's MMC1 compares to the MMC1 Dev Board that RetroZone offers? I would assume they are P...

What is the current status of this project? This sounds perfect for my budget and my development needs.

Can I get the schematics for the cart and USB->NES cable and code? More importantly, can anyone flash the boot loader for me?

Hello! I'm finally sitting down to write that NES space shooter I've always wanted to make but am having some issues figuring out a cheap and effective way to test on real hardware. I am trying to keep my costs low so my CFO (read: Wife) doesn't fire (read: kill, mutilate and destroy) me. I have sea...

Holy cow, that site is like stepping back into 1994! Freakin' everything is an animated GIF, even the backgrounds!