Search found 8044 matches
- Sat Jun 19, 2021 2:34 am
- Forum: NESdev
- Topic: Somebody is selling my game
- Replies: 15
- Views: 5148
Re: Somebody is selling my game
It's only half-surprising, and one of the reasons I began to be less interested in game development in the 1st place... Distributing the ROM for free yourself is not a license for others to do so. There's a huge difference between Action 53 including it with your permission, and OCDReproductions jus...
- Tue Jun 15, 2021 3:17 am
- Forum: General Stuff
- Topic: Fake low power KM62256BLS SRAM from aliexpress
- Replies: 2
- Views: 2073
Re: Fake low power KM62256BLS SRAM from aliexpress
It's crazy they bother to make fake chips for chips that are obsolete since ~25 years
- Fri Jun 11, 2021 5:28 am
- Forum: Newbie Help Center
- Topic: Questions About DPCM and PCM
- Replies: 21
- Views: 4491
Re: Questions About DPCM and PCM
Or the more elegant : lda #%00010000 sta $4015 - bit $4015 bne - ;) But if you're going to spend 100% of your CPU time for sample playback anyway, you might just as well use $4011 instead and get better quality/bitrate ratio. A real DPCM engine in a real game will most likely handle this stuff only ...
- Mon May 31, 2021 1:39 am
- Forum: NESdev
- Topic: What are ROM Nametables useful for?
- Replies: 24
- Views: 9702
Re: What are ROM Nametables useful for?
I don't remember inspecting the internal funtionning of any game using ROM Nametables, so I can't answer directly. However, it's clear that while ROM nametables could be used for title screens, game over screens, and other static screens, they are little useful in these case because : 1) It is not p...
- Tue May 25, 2021 2:48 am
- Forum: General Stuff
- Topic: Becoming an FPGA Engineer
- Replies: 48
- Views: 13302
Re: Becoming an FPGA Engineer
AFAIK there's only one model that has an open source toolchain, so if at all possible, you should target that. Otherwise you're stuck with one vendor's whims and programs, that may change, become deprecated, and with experience that doesn't transfer well to any other vendor. I can't say for now but...
- Mon May 24, 2021 1:46 am
- Forum: NESdev
- Topic: D (decimal) flag
- Replies: 9
- Views: 3277
Re: D (decimal) flag
Is there any reasonable way to use this flag on the NES? It seems potentially useful to have a general-use flag that gets pushed and pulled from the stack automatically. It is automatically pushed to and pulled from the stack only on interrupts (NMI and IRQs). I fail to see any practical use of thi...
- Thu May 20, 2021 11:12 am
- Forum: NESdev
- Topic: CHR swap in finer than 1k chunks?
- Replies: 13
- Views: 4210
Re: CHR swap in finer than 1k chunks?
That's a very interesting idea! Has it ever been implemented?. My second question is wouldn't that consume too much of the CPU's time? It is pretty much proportional to how tall the area where the effect is enabled would be. If you want this for the whole screen it would eat basically the whole CPU...
- Thu May 20, 2021 10:56 am
- Forum: NESdev
- Topic: CHR swap in finer than 1k chunks?
- Replies: 13
- Views: 4210
Re: CHR swap in finer than 1k chunks?
Just in case you're not familiar with how the MMC5 does things: it takes advantage of the fact that 8x16 sprites can fetch patterns from both pattern tables, and that background patterns and sprite patterns are fetched at different times, so in 8x16 mode it gives you 8 x 1KB banks just for sprites,...
- Tue May 18, 2021 3:18 am
- Forum: NESdev
- Topic: Is PPU_DATA read slow?
- Replies: 18
- Views: 10898
Re: Is PPU_DATA read slow?
Just saying I've seen games doing that. Shadowing $80 bytes for attributes isn't particularly efficient either.
- Tue May 18, 2021 12:35 am
- Forum: NESdev
- Topic: Is PPU_DATA read slow?
- Replies: 18
- Views: 10898
Re: Is PPU_DATA read slow?
Because reading from the PPU is so restrictive, it's generally only used for storing blocks of data in CHR-ROM. [...] So don't read from the PPU unless you are storing data in CHR-ROM. You need to stop any DMC samples from playing during that time. Just to nickpit, there's another common usage of V...
- Thu May 06, 2021 12:31 am
- Forum: General Stuff
- Topic: How were Neo Geo games so big?
- Replies: 22
- Views: 13826
Re: How were Neo Geo games so big?
Because you're conusing megabits and megabytes. 1 megabyte is 8 megabits. Also 46 megabits seems a very unlikely value, 48 megabits (one ROM of 32 and one of 16) seems like a much more likely value. So that's only 1,5 times larger than either of the Donkey Kong Country games on the SNES, and not 12....
- Tue Apr 27, 2021 11:34 pm
- Forum: General Stuff
- Topic: Zelda II - The Adventure of Link... SUCKED
- Replies: 31
- Views: 18183
Re: Zelda II - The Adventure of Link... SUCKED
Personally, while I always loved to play Zelda games for one hour or two, I never went further in any games of the series, no matter the generation or the platform. There just lacks something that made me continue playing them in a "hardcore" way. Zelda II is no exception but the main issu...
- Wed Apr 21, 2021 2:00 am
- Forum: General Stuff
- Topic: Loss of interest for computer scinence, anyone else ?
- Replies: 40
- Views: 24832
Re: Loss of interest for computer scinence, anyone else ?
Lifeguard, bringing in carts at the grocery store, picking up garbage on the side of the road, apartment maintenance guy, video game tester, cook, those are all just fun exciting jobs that are everywhere but don't pay anything. Bringin carts at the grocery store is fun ? Picking up garbage is fun ?...
- Tue Apr 20, 2021 2:06 am
- Forum: NESdev
- Topic: Game loop order
- Replies: 8
- Views: 5877
Re: Game loop order
Even if your game is not scrolling, it's nice to have good practice from the start.I'm not fussing with scrolling on my first game, but I really appreciate the tips about the camera, as I will eventually need it
So basically do shadow OAM last and you'll be fine.
- Tue Apr 20, 2021 1:35 am
- Forum: General Stuff
- Topic: Loss of interest for computer scinence, anyone else ?
- Replies: 40
- Views: 24832
Re: Loss of interest for computer scinence, anyone else ?
Well thank goodness you're here then at least. Being here and being able to do some NES dev for a project has saved me from going mad. Haha, thanks and you're weclome. I'm mostly here because I like the nesdev folks and culture and all, but I haven't done actual nesdev since at least 4 years unfort...