Search found 311 matches

by Petruza
Tue Feb 03, 2009 7:58 am
Forum: General Stuff
Topic: Is there an emulator of a non-existent system?
Replies: 21
Views: 8470

HAHAHAHAAHAH Ok guys! stop the phillosophical crazyness, I mean emulators that emulate a computer that doesn't exist....
Like inventing a whole new processor with instruction set, memory space, graphics chip, and such...
by Petruza
Mon Feb 02, 2009 8:59 pm
Forum: General Stuff
Topic: Is there an emulator of a non-existent system?
Replies: 21
Views: 8470

Is there an emulator of a non-existent system?

Yes, I know it may be a silly idea, but I don't know, it came to my mind, and there's so much out there in the internet, someone may have made one.
Do you know any?
by Petruza
Mon Feb 02, 2009 7:54 pm
Forum: NESdev
Topic: rNES - a NES library for cc65 - version 0.1 released
Replies: 67
Views: 47591

- Probably a bug in my emulator (RockNES), I still need to trace the code. Well, it works on Nintendulator and Nestopia, but not on FCEUX. Yes, it's strange, my progs run perfectly on FCEUXD but not at all on FCEUX. EDIT: hmm, it's buggy from beta 8, works fine on beta <= 7... Interesting. Well, it...
by Petruza
Mon Feb 02, 2009 3:25 pm
Forum: NESdev
Topic: rNES - a NES library for cc65 - version 0.1 released
Replies: 67
Views: 47591

He is the author of RockNES, so he probably meant the lastest version. Oh, that was he meant by "My" emu. =D Yeah, that's the correct way to hide unused sprites. For better performance, you don't even have to clear the whole page, simply setting the Y coordinates to $F0 or more will hide ...
by Petruza
Mon Feb 02, 2009 5:59 am
Forum: NESdev
Topic: rNES - a NES library for cc65 - version 0.1 released
Replies: 67
Views: 47591

It's good to see some effort done for the C version of CC65...Good work! Thanks! Looks promising. However you should learn some assembly. Also I'd have to go to GBA dev seeing how they do games in C, and maybe try to do similar libraries for the NES, so that they are suitable for game use. Thanks! ...
by Petruza
Mon Feb 02, 2009 5:51 am
Forum: NESdev
Topic: rNES - a NES library for cc65 - version 0.1 released
Replies: 67
Views: 47591

- My emu displays wrong colors: - Any help? :( Letters' colors are right. The earth seems to have a problem. What emulator and version is it? http://img172.imageshack.us/img172/5483/bugft2.png OH! now that I see your screenshot, your emulator shows the first and last rows of tiles... And I can see ...
by Petruza
Mon Feb 02, 2009 4:18 am
Forum: NESdev
Topic: Confused about the resolution
Replies: 4
Views: 2591

Well, there are 240 actual scanlines rendered to the screen, although the first and last 8 aren't usually seen on the screen of TVs and emulators. the remaining VBlank, and the other 2 Tokumaru mentions, aren't really lines of pixels rendered anywhere, but rather the time that it would last if they ...
by Petruza
Sun Feb 01, 2009 7:30 pm
Forum: NESdev
Topic: rNES - a NES library for cc65 - version 0.1 released
Replies: 67
Views: 47591

rNES - a NES library for cc65 - version 0.1 released

Well, here's the quick and dirty first release of rNES, a library for NES apps and games development, written in C for cc65. Hope some newbie can benefit from this Contributions, criticism and ideas are welcome! http://tachdaun.com.ar/rnes/rNES-0.1.zip http://www.freeimagehosting.net/uploads/e83e6ee...
by Petruza
Sun Feb 01, 2009 10:14 am
Forum: Newbie Help Center
Topic: Trying to understand nametable mirroring
Replies: 7
Views: 3178

Thanks! now I get it.
by Petruza
Sun Feb 01, 2009 7:22 am
Forum: Newbie Help Center
Topic: Trying to understand nametable mirroring
Replies: 7
Views: 3178

But it does horizontal scrolling ( obviously ) then how come it scrolls horizontally if the nametable on the right is a mirror of the nametable on the left?
I have to check it now on FCEXUD because I don't get it.
by Petruza
Sun Feb 01, 2009 7:18 am
Forum: Newbie Help Center
Topic: About iNES mappers, memory sizes...
Replies: 8
Views: 4129

Re: About iNES mappers, memory sizes...

Let's say I want to make a library and a game or some app, and I only plan it to be run on NES emulators, and not build a cartridge to be run on the actual console Anyway, yes, I could develop for a number of more powerful platforms. Believe me I am, and I will, but in this forum, I want to focus o...
by Petruza
Sun Feb 01, 2009 12:28 am
Forum: Newbie Help Center
Topic: About iNES mappers, memory sizes...
Replies: 8
Views: 4129

Re: About iNES mappers, memory sizes...

tepples wrote:Game Boy Advance instead of NES
No thanks, NES is the reason I'm posting in this forum.
tepples wrote:Or you can make it in Java.
If this is some kind of sarcasm, Idon't get it.
I've developed games in Java for cell phones, and C++ for Wintel, but that's not what I'm looking for in this forum.
by Petruza
Sun Feb 01, 2009 12:23 am
Forum: Newbie Help Center
Topic: Trying to understand nametable mirroring
Replies: 7
Views: 3178

Thanks, it's like I suspected, my doubt was about why was mirroring mentioned instead of scrolling, that made me think mirroring was in itself important. Everywhere "vertical mirroring" is metioned, what really matters, from the point of view of the programmer, is "horizontal scrollin...
by Petruza
Sat Jan 31, 2009 7:56 pm
Forum: Newbie Help Center
Topic: Trying to understand nametable mirroring
Replies: 7
Views: 3178

Trying to understand nametable mirroring

Hi, so far I've understood this: Vertical mirroring means both bottom nametables are a copy ( mirror ) of the top nametables, where you write to, and you can scroll between them horizontally. Horizontal mirroring is the opposite. And third, you can have 2way scrolling which has no mirroring, and you...
by Petruza
Sat Jan 31, 2009 7:30 pm
Forum: Newbie Help Center
Topic: About iNES mappers, memory sizes...
Replies: 8
Views: 4129

About iNES mappers, memory sizes...

Hi, I've read about iNES mappers on the Nesdev wiki and got surprised to know that for example, there's a mapper with 128K for CHR-ROM! While I was thinking how to fit all the game's tiles in 4k... Let's say I want to make a library and a game or some app, and I only plan it to be run on emulators, ...