Search found 8045 matches
- Tue Mar 26, 2024 12:52 am
- Forum: Newbie Help Center
- Topic: Help with 2-byte indexing lookup table
- Replies: 5
- Views: 300
Re: Help with 2-byte indexing lookup table
I think this is intended for learning purpose where the "lda #$0c" would be repaced with a more complex calculation leading to a variable result. If the entry is fixed to #$0c I'd even scrap the lookup table completely and load the immediate values directly into the registers. Also, having...
- Sun Mar 03, 2024 10:28 am
- Forum: NES Music
- Topic: More NSF Requests
- Replies: 3263
- Views: 1589453
Re: More NSF Requests
Much, much better !
Thank you very, very much !
- Wed Feb 28, 2024 1:28 am
- Forum: NESdev
- Topic: MMC5 and third pattern nametable
- Replies: 30
- Views: 2326
Re: MMC5 and third pattern nametable
Assuming the nomenclature is the "A" set is associated with registers $5120-$5127 and "B" set with $5128-$512b, as it is the case in both Goroh's document and Dish's notes: If your PPU code follows the same cycle-by-cycle memory fetch pattern that the real chip does (which it loo...
- Thu Feb 22, 2024 9:00 am
- Forum: NESdev
- Topic: MMC5 and third pattern nametable
- Replies: 30
- Views: 2326
Re: MMC5 and third pattern nametable
Post said that it synchronizes to the two NT reads at end of scanline, then counts down 256 dots or 128 total memory accesses. And why does it count 256 dots? AFAIK, the MMC5 can't count "dots", as those can't be seen directly on the PPU bus, but it can count memory accesses by watching /...
- Wed Feb 21, 2024 3:09 pm
- Forum: SNESdev
- Topic: SPC700 is similar to Paula ?
- Replies: 7
- Views: 668
Re: SPC700 is similar to Paula ?
This guy is simply a stupid troll IMO . +1 I am unfamiliar with Paula, but it sounds like it has much less features than the SPC700 : Not a dedicated CPU for sound, no fine left and right volume control, no ADSR volume enveloppe, no noise mode, no pitch modulation, no echo buffer, and obviously no ...
- Wed Feb 21, 2024 2:54 pm
- Forum: NESdev
- Topic: MMC5 and third pattern nametable
- Replies: 30
- Views: 2326
Re: MMC5 and third pattern nametable
When using 8x16 sprites, the PPU ignores the sprite pattern table address I assume here its saying it ignores 2000.5 isn't it? No, it's refering to $2000.3 which selects the pattern table for sprites. This bit is ignored when $2000.5 is set (8x16 sprites) - this is always the case no matter the map...
- Wed Feb 21, 2024 3:54 am
- Forum: General Stuff
- Topic: Public transit
- Replies: 10
- Views: 681
Re: Public transit
When I want to go somewhere, if it is close then I would prefer to walk. [...] (But, it would be better to reduce the pollution of light, noise, chemicals, etc by cars and trucks and also bus. Therefore, I should prefer to walk; but, some people don't like to do walk.) I'd love to walk if the way l...
- Tue Feb 20, 2024 6:08 am
- Forum: Wiki Issues
- Topic: Using artificial intelligence to give clearer description of hardware on the Wiki
- Replies: 0
- Views: 690
Using artificial intelligence to give clearer description of hardware on the Wiki
When working on a technical documentation such as the NESdev wiki, it's hard to keep the information consistant and easy to understand. Common pitfalls would be : Have the necessary information scattered on a page, or even worse on multiple page. Make assumptions that the reader knows something. Or ...
- Mon Feb 19, 2024 3:00 pm
- Forum: NES Music
- Topic: More NSF Requests
- Replies: 3263
- Views: 1589453
Re: More NSF Requests
I've noted that the NSF rips of Square no Tom Sawyer I have arround are somehow bad rips. The music seems to work at 1st glance, but in most songs the track are stuck on a repeat loop and don't play the entiere song. Sometimes the different channels aren't looping simultaneously. Is there a correct ...
- Mon Feb 19, 2024 2:18 pm
- Forum: General Stuff
- Topic: Public transit
- Replies: 10
- Views: 681
Re: Public transit
Not in my city right now. The bus service here has 58 days of scheduled downtime per year: the 52 Sundays and six major holidays. Today is a Sunday. At least on those days when it is in operation, it still accepts cash. USA are well known for it's (compared to other 1st world countries) terrible qu...
- Mon Feb 19, 2024 1:44 am
- Forum: NESdev
- Topic: MMC5 and third pattern nametable
- Replies: 30
- Views: 2326
Re: MMC5 and third pattern nametable
Don't worry it's fine to ask questions and having some trouble not getting it to work. First of all, there is something weird and unique about the MMC5 in that it monitors writes to $2000 in order to keep track of whether the PPU uses 8x8 or 8x16 sprites, and the bankswitching registers used to rend...
- Fri Feb 16, 2024 1:32 am
- Forum: General Stuff
- Topic: DMCA Anti-Circumvention Laws and Video Game Dumping
- Replies: 39
- Views: 2693
Re: DMCA Anti-Circumvention Laws and Video Game Dumping
Actually public and private things are and to some point always were intermixed. For example here in Switzerland you can have your account in a public bank, but the cart will still be handled by one of the major private companies you mentioned. Some communities have some form of public car rental se...
- Thu Feb 15, 2024 3:02 pm
- Forum: Wiki Issues
- Topic: Questions & Clarifications regarding APU Sweep
- Replies: 1
- Views: 239
Re: Questions & Clarifications regarding APU Sweep
The Wikipedia page on barrel shifters is just that - it is a page about all barrel shifters, not the very specific one in the NES APU's sweep function. Obviously the sweep barrel shifter does a right shift and not a rotate - if it did a rotate the frequency would not sweep but instead quickly rotate...
- Thu Feb 15, 2024 2:52 pm
- Forum: General Stuff
- Topic: DMCA Anti-Circumvention Laws and Video Game Dumping
- Replies: 39
- Views: 2693
Re: DMCA Anti-Circumvention Laws and Video Game Dumping
What I mean is the parking itself is a symptom of the car, a "nice to have" that has been morphed into a "need to have" by the forces of commerce and industry. The car is a product you purchase from a company benefitting from decades of social manipulation. It isn't a need, but ...
- Thu Feb 15, 2024 8:19 am
- Forum: NESdev
- Topic: Final Fight 3 (mapper 90), get rid of multiplier, issues
- Replies: 12
- Views: 3110
Re: Final Fight 3 (mapper 90), get rid of multiplier, issues
This means that this game used an ASIC multiplier just to do 2 constant by constant multiplications, which could have been done at compile time 2 multiplications by 10, which are very easily done in pure 6502 And that's all ? If I understood well this is just a Chinese bootleg, but still it sounds l...