Search found 493 matches

by clueless
Thu Sep 18, 2008 2:56 pm
Forum: Newbie Help Center
Topic: 8-way scroll, MMC1, status bar, name-table layout
Replies: 17
Views: 6003

8-way scroll, MMC1, status bar, name-table layout

I'm using the MMC1 mapper. I would like to have a small status bar at the top of the screen, with the rest of the screen scrolling independently in any direction. I plan on using the sprite-0 hit detection to set the $2006, $2005 scroll regs. What I'm trying to figure out is the best way to make use...
by clueless
Sat Sep 13, 2008 10:07 pm
Forum: Newbie Help Center
Topic: Recommendations on when to integrate sound support
Replies: 20
Views: 7169

If you're ever interested in reverse-engineering a commercial sound engine for CPU-saving tricks, Isolated Warrior (and probably most other games developed by KID) might be worth your time. It has some pretty "complicated" music, yet uses less CPU than some other relatively simple engines (i.e. Meg...
by clueless
Sat Sep 13, 2008 9:58 pm
Forum: Newbie Help Center
Topic: Recommendations on when to integrate sound support
Replies: 20
Views: 7169

wow! cool. someone used it :) but.. your PNG file doesn't look any different from the original game. Did you make any changes? The main reason why I wrote the editor is that I wanted to know what the over-world looked like when zoomed out. The game never provided any kind of "map" like that. You wer...
by clueless
Sat Sep 13, 2008 5:35 pm
Forum: Newbie Help Center
Topic: Recommendations on when to integrate sound support
Replies: 20
Views: 7169

Don't forget crazy stuff like DMC IRQ. Codemasters used that instead of an MMC3. I haven't... It is weird... I actually thought of that on my own and then read about it a few days later while reading the forum archive. :) I might experiment with it when the time comes. btw- The fancy ending music o...
by clueless
Sat Sep 13, 2008 5:22 pm
Forum: Newbie Help Center
Topic: Recommendations on when to integrate sound support
Replies: 20
Views: 7169

If you want to build carts, it's best to keep it simple. I'm pretty sure I could design a mapper like what you described, using a couple bucks worth of very common parts. Even better if your game can get by without an IRQ counter. Sounds like you want UNROM with an IRQ. Yup, sounds about right. But...
by clueless
Sat Sep 13, 2008 1:23 pm
Forum: Newbie Help Center
Topic: Recommendations on when to integrate sound support
Replies: 20
Views: 7169

Thanks for the advice. I'm really not sure what part of the "game" that I'm going to start on. I figure I want to be able to handle 8-way scrolling on an MMC1 cart. MMC1 means that most likely there won't be a status bar, or it will be at the very top and split-scrolled via sprite-0 hits. 8-way scro...
by clueless
Thu Sep 11, 2008 10:51 am
Forum: Newbie Help Center
Topic: Recommendations on when to integrate sound support
Replies: 20
Views: 7169

Thanks tepples, that idea sounds really cool.

ps- I'm curious about most people's avatar choices. What is your avatar from?
by clueless
Thu Sep 11, 2008 8:37 am
Forum: Newbie Help Center
Topic: Recommendations on when to integrate sound support
Replies: 20
Views: 7169

Recommendations on when to integrate sound support

Hello everyone, Is it better to get a game engine working without sound and then add it in (background theme music, 'event' based sounds, etc...)? Or is it better to begin working on sound support as soon as you can get a few tiles displayed? My assumption here is that sound support eats into the CP...
by clueless
Wed Sep 10, 2008 5:52 pm
Forum: NESdev
Topic: Joystick read without using temp RAM intermediate.
Replies: 31
Views: 12016

Is it feasible to build a circuit that toggles the mic input such that you can adjust this rate via a PC or simple variable resistor? If so, what would be the "optimal" frequency and duty-cycle to induce the worse interference when reading the joystick? Would a test like this even be useful or produ...
by clueless
Wed Sep 10, 2008 2:25 pm
Forum: Newbie Help Center
Topic: Breakpoints in FCEUXD
Replies: 16
Views: 5541

I'm sure you know tons more about the 6502 than I do, but I would never reserve something like that in the stack! That's somewhere I usually just don't touch. Even for saving the status of a register, I never do things like pla/pha, I just use a ZP temp var. I have like 8 reserved as plain temporar...
by clueless
Wed Sep 10, 2008 1:10 pm
Forum: Web Issues
Topic: Loopy's disappearing posts
Replies: 2
Views: 12179

Loopy's disappearing posts

Hello, I've read (but not really retained - there were sooooo many) almost every post in these forums over the past few weeks. I've noticed that almost all (if not all) of "loopy's" posts were removed around August 20, 2008. Any idea why? I gather that loopy is some sort of guru - so this loss of in...
by clueless
Wed Sep 10, 2008 12:48 pm
Forum: Newbie Help Center
Topic: Breakpoints in FCEUXD
Replies: 16
Views: 5541

And also, welcome to the NESdev community! I think you'll find the NES to be a very straight forward system. There aren't lots of things to learn about it, and since you know 6502 very well, you'll learn really really fast. Or, at least faster than I did (I didn't know how to program at all when I ...
by clueless
Wed Sep 10, 2008 12:24 pm
Forum: Newbie Help Center
Topic: Breakpoints in FCEUXD
Replies: 16
Views: 5541

Well, I'm not sure what the problem would be. I would normally just stick an STA $4500 in the code where I want it to break. But say if something is being written to in RAM and I don't know where from, I'd like to break on any write to that address. Maybe try the newest version of it? There was som...