Search found 567 matches
- Mon Mar 13, 2023 7:25 pm
- Forum: NESdev
- Topic: DPCM + $2007 reads
- Replies: 22
- Views: 1791
Re: DPCM + $2007 reads
Honestly, I think the simplest workaround is to disable the DMC channel before the $2007 reads. Since you're aiming to use this in a pause menu, you can get away with playing a song which does not use DPCM. Otherwise, muting DMC can just be masked as some audio effect a la SMBUSA, where the pause t...
- Sun Mar 05, 2023 10:44 am
- Forum: NESdev
- Topic: Garbage Collector for CC65
- Replies: 31
- Views: 2253
Re: Garbage Collector for CC65
It can make sense if one makes a game with a somewhat lightweight scripting engine. Ideally, the garbage collector should run frequently with small collection steps so it is quick to run in the general case that the scripting engine doesn't generate more garbage than the collector can collect. The s...
- Wed Mar 01, 2023 5:42 am
- Forum: NESemdev
- Topic: PAL color palette emulation
- Replies: 90
- Views: 75877
Re: PAL color palette emulation
I remember the description of the output DAC as a resistor chain, but I never saw before a drawing with the color emphasis.
And BTW, welcome back! Long time no see!
And BTW, welcome back! Long time no see!
- Sun Feb 12, 2023 7:14 pm
- Forum: Wiki Issues
- Topic: Trying not to destroy Contents infobox
- Replies: 2
- Views: 870
- Mon Jan 30, 2023 8:17 pm
- Forum: General Stuff
- Topic: Living without a personal smartphone
- Replies: 69
- Views: 30741
- Mon Jan 30, 2023 5:04 pm
- Forum: NESdev
- Topic: Can't get my old famicom work
- Replies: 16
- Views: 1388
Re: Can't get my old famicom work
You might be able to check with a multimeter without opening it, if you have one. I'm guessing the outside of one of those video/audio outputs are connected to ground. Maybe you can determine the power input ground by seeing which side has continuity with the audio/video plugs. Post a couple pics o...
- Sat Jan 28, 2023 7:48 pm
- Forum: NESemdev
- Topic: Mesen - Emulator
- Replies: 415
- Views: 251046
Re: Mesen - Emulator
I'm currently packaging it for Arch Linux (edit: done! ), so installing there will be simpler; I just opened a PR that fixes some build errors I encountered along the way. Thank you for the lighter dependencies, by the way! Nice, thank you! Will vote for your package once I install it and play arou...
- Sat Jan 28, 2023 8:35 am
- Forum: NESdev
- Topic: Can't get my old famicom work
- Replies: 16
- Views: 1388
Re: Can't get my old famicom work
That AC brick is definitely not enough, 500mA+ @ 7V+ is needed to make things reliably run. Polarity is center negative like MD1, SMS and many other Japanese made things. Reverse polarity is likely to cause damage to the 7805 in there. How do you know the polarity? This is a famiclone, it can be an...
- Sat Jan 28, 2023 8:33 am
- Forum: NESemdev
- Topic: Mesen - Emulator
- Replies: 415
- Views: 251046
Re: Mesen - Emulator
This emu is on GitHub. If you can, submit your issues (or suggestions) here, it will be easier for Sour to manage, instead of looking at a thread that will go large in a matter of time.
(Can't help but feel sorry for a developer!)
(Can't help but feel sorry for a developer!)
- Fri Jan 27, 2023 11:19 am
- Forum: NESdev
- Topic: Can't get my old famicom work
- Replies: 16
- Views: 1388
Re: Can't get my old famicom work
The adapter can only deliver 250mA, I highly doubt it is enough (except if the famiclone uses modern components and uses less energy). Find something that delivers 750mA or more. Also, I can't see the polarity of the DC current for the famiclone, but you have to know this before plugging the power i...
- Fri Jan 20, 2023 9:41 am
- Forum: General Stuff
- Topic: Desired Possible Inventions
- Replies: 13
- Views: 1483
Re: Desired Possible Inventions
Probably pressure; after all there's quite a bit of pressure in a unopened can or bottle, and it only goes flat after opening.
Besides, my solution to this problem is to only buy cans. Not that I drink much soft drinks for that matter.
Besides, my solution to this problem is to only buy cans. Not that I drink much soft drinks for that matter.
- Sat Jan 14, 2023 9:18 pm
- Forum: NES Music
- Topic: Saw Wave on DPCM channel w/ Famitracker
- Replies: 14
- Views: 2545
Re: Saw Wave on DPCM channel w/ Famitracker
I understood that bit, but I was making sure you didn't attempt to make an NSF out of it.
- Fri Jan 13, 2023 3:39 pm
- Forum: NES Music
- Topic: Saw Wave on DPCM channel w/ Famitracker
- Replies: 14
- Views: 2545
Re: Saw Wave on DPCM channel w/ Famitracker
Just in case, what are you trying to achieve? Whatever you want to do has to be in a NES program (*.nes file); you can't do this in an NSF file, because you can't use (*) IRQs in NSF files, and the DMC sawtooth waves heavily relies on them. *: being pedantic, but in an NSF file you can rely on IRQ f...
- Wed Jan 11, 2023 11:15 am
- Forum: SNESdev
- Topic: What is wrong with my SNES?
- Replies: 3
- Views: 989
Re: What is wrong with my SNES?
Maybe, maybe the pull-up resistor on the data line of the 2nd controler is burnt/broken, and the controler data is indeterminate? I don't see why that would happen, but it could certainly read illegal controler values (left+right up+down etc) but only if the 2nd controler is absent. Many games freak...
- Wed Jan 11, 2023 6:29 am
- Forum: NES Hardware and Flash Equipment
- Topic: Modern Mapper Replacement Chips?
- Replies: 27
- Views: 2362
Re: Modern Mapper Replacement Chips?
An naive implementation of multiplication by difference of squares would use 512 bytes for a LUT (256 16-bit values), and would require an 8-bit difference+lsr, an 8-bit mean, 2 16-bits lookup and a 16-bit difference. In the ballpark of 50 cycles or so?