Search found 186 matches

by LocalH
Tue Apr 18, 2023 12:10 pm
Forum: NESdev
Topic: mid-scanline split scrolling using timed code?
Replies: 7
Views: 1093

Re: mid-scanline split scrolling using timed code?

Dwedit wrote: Mon Apr 17, 2023 11:21 am Flickering looks okay on slow LCD displays, and terrible on CRTs.
Flickering is only really bad on a CRT when the contrast between the flickered luminances is high. If you take two colors of similar luminance, you can flicker between them without being objectionable.
by LocalH
Sun Apr 16, 2023 7:46 am
Forum: NESdev
Topic: 64 columns in NES?
Replies: 7
Views: 1045

Re: 64 columns in NES?

If you are flickering things, then you don't even need the CHR-RAM, just one font for left side and one font for right side. Oh that's right, the NES does have enough RAM for the two nametables, so CHR-RAM wouldn't be needed to put whatever text you'd want on screen. You can tell my NES knowledge i...
by LocalH
Sat Apr 15, 2023 1:47 pm
Forum: NESdev
Topic: 64 columns in NES?
Replies: 7
Views: 1045

Re: 64 columns in NES?

If you don't mind the flicker of it, there's what I'd call the "cheap" method: have two sets of tiles, with 4x8 glyphs stored on the left and right halves of the 8x8 tiles, have two nametables for left and right half characters, and alternate between the nametables every frame, and of cour...
by LocalH
Fri Apr 14, 2023 6:34 pm
Forum: Newbie Help Center
Topic: Help understanding NTSC 525 lines per frame vs NES's 262
Replies: 15
Views: 3162

Re: Help understanding NTSC 525 lines per frame vs NES's 262

It's ingenious how the half line creates the interlacing. Basically, the horizontal deflection *never stops*, it merely resets to the left hand side of the screen at each hblank. Similarly, the vertical deflection never stops, and in fact each scan line ends at a slightly lower position than it star...
by LocalH
Sun Jun 12, 2022 9:44 am
Forum: General Stuff
Topic: Looking for tvnoise2000.nes (nes demo from pouet.net).
Replies: 5
Views: 3192

Re: Looking for tvnoise2000.nes (nes demo from pouet.net).

I tried but for some reason I was unable to quickly figure out how. When I click the Attachments tab, it didn't seem to do anything on my end. Turns out it was related to a Greasemonkey script I have installed for this "bionic reading" thing that helps me read faster. Seems like I'll have ...
by LocalH
Sat Jun 11, 2022 9:32 am
Forum: General Stuff
Topic: Looking for tvnoise2000.nes (nes demo from pouet.net).
Replies: 5
Views: 3192

Re: Looking for tvnoise2000.nes (nes demo from pouet.net).

Few months old post, but I just uploaded the ROM here: https://www.mediafire.com/file/06dmskh6 ... 0.nes/file

Sorry for MediaFire, it's what I had handy for a quick upload.
by LocalH
Sat Jan 30, 2021 10:35 pm
Forum: Homebrew Projects
Topic: [DEV - DONE] Nintendo World Championships 1990 Competition Cartridge NES - PERFECT REPRO
Replies: 19
Views: 14151

Re: [DEV - DONE] Nintendo World Championships 1990 Competition Cartridge NES - PERFECT REPRO

So, is there any hint anywhere in or on the cart itself, that it is indeed a repro? I don't know if I'm cool with what is essentially a perfect counterfeit being actively sold. You may not be passing it off as legitimate, but someone who buys one from you could potentially do so. Certainly, impressi...
by LocalH
Tue Jan 26, 2021 11:37 am
Forum: Other Retro Dev
Topic: Overdrive 2 scene by scene
Replies: 6
Views: 10312

Re: Overdrive 2 scene by scene

4:15 no idea how to replicate "broken border" here Since this is a PAL thing, you may not need to if you wish to accomplish NTSC compatibility. The SNES has an overscan mode that gives it 15 more pixels, though that may not be enough of a border. Given the video chips that I've seen to ha...
by LocalH
Sat Dec 19, 2020 1:44 pm
Forum: General Stuff
Topic: Super Mario Bros.: Why all the floating money?
Replies: 77
Views: 48667

Re: Super Mario Bros.: Why all the floating money?

so, how bout them coins?
by LocalH
Thu Dec 10, 2020 1:33 pm
Forum: NESdev
Topic: Broken Palette Links / and another Palette Choice
Replies: 16
Views: 17538

Re: Broken Palette Links / and another Palette Choice

Except that's not true! No CRT TV I've ever seen displays 0 IRE as Really Black, and so -14 IRE has always been Even Darker ... as long as it doesn't lose sync. The difference would be harder to perceive - in the US, at least - with a properly calibrated set (where setup is considered "black&q...
by LocalH
Wed Dec 09, 2020 11:28 pm
Forum: NESdev
Topic: .fds format: Can checksums be heuristically detected?
Replies: 51
Views: 30642

Re: .fds format: Can checksums be heuristically detected?

I suppose the existence of a low-level image can be useful for independent verification that the higher-level image indeed is unmodified and contains all the necessary information. But I would not want to deal with the low-level image outside that narrow application. The idea of loading a 50 MiB se...
by LocalH
Wed Dec 09, 2020 10:44 pm
Forum: NESdev
Topic: .fds format: Can checksums be heuristically detected?
Replies: 51
Views: 30642

Re: .fds format: Can checksums be heuristically detected?

I understand the justification for no-CRC dumps, although the preservationist in me doesn't really like anything less than bit-perfect dumps of the entire disk contents, whether or not we "need" them. Not sure if flux transition dumps would be necessary but that's kinda the ultimate concep...
by LocalH
Sat Dec 05, 2020 2:13 am
Forum: NESdev
Topic: Weird SMB3 pirate cart
Replies: 10
Views: 4760

Re: Weird SMB3 pirate cart

You don't even need to get to world 2. Get the first one from 1-3, get the second one from 1-Fortress, then immediately use one to get to warp zone, and use the second one while you're inside warp zone. Instant world 8.
by LocalH
Sun Aug 16, 2020 9:40 am
Forum: SNESdev Homebrew Projects
Topic: [demo] SNES Sonic
Replies: 259
Views: 222012

Re: [demo] SNES Sonic

Damn, nicely done
by LocalH
Fri Oct 04, 2019 9:47 am
Forum: NESdev
Topic: How can we keep our NES development resources around?
Replies: 23
Views: 20826

Re: How can we keep our NES development resources around?

For 3rd party links I've cited on the wiki, I've started adding (commented out) links to backups of these 3rd party links using archive.is Slightly relevant, if a user happens to be using Cloudflare's 1.1.1.1 DNS resolver, these archived links will be unreachable (something to do with Cloudflare no...