Search found 152 matches

by Bavi_H
Thu Aug 04, 2022 4:22 pm
Forum: NES Graphics
Topic: Trying to figure out which RGB palette is canonical
Replies: 36
Views: 2048

Re: Trying to figure out which RGB palette is canonical

How come that the hues on the PPU are in angles, degrees and clockwise etc, and not voltage levels? (Adapted from previous post Re: Palette/colors clarification :) In the NTSC composite signal, the signal is made of phase , amplitude , and average level as shown in this diagram [image link updated ...
by Bavi_H
Fri Jul 22, 2022 10:22 pm
Forum: SNESdev
Topic: Upside down controller
Replies: 46
Views: 2334

Re: Upside down controller

In modern NES releases, Gruniożerca 3 has an upside-down controller setting. From the announcement post here at Nesdev Forums: Controls & Accessibility Although standard input conventions (A to accept, start to pause, etc.) have been followed, additional input methods are also accepted to allow ...
by Bavi_H
Wed Jul 13, 2022 4:26 pm
Forum: NESdev
Topic: An issue regarding a custom code
Replies: 18
Views: 2099

Re: An issue regarding a custom code

This was also recently posted at ROMhacking.net Forum: An issue regarding a custom 6502 assembly code . There, I raised the same concerns about the comments not quite matching the hex code and asked some questions. Timaeus explained they were working from bisqwit's Megaman 1 disassembly, which I fou...
by Bavi_H
Thu Jun 30, 2022 4:18 pm
Forum: NESdev
Topic: Different behaviour between real NES and Emulators in Battle City
Replies: 31
Views: 1802

Re: Different behaviour between real NES and Emulators in Battle City

In your first post, it looks like you modified an emulator screenshot to show what the screen looked like with your repo cart. If you can take an actual photo of the screen, we might notice some pattern in the image that indicates some kind of fault between signal lines. For example, It looks like t...
by Bavi_H
Thu Jun 30, 2022 2:22 pm
Forum: NESdev
Topic: Different behaviour between real NES and Emulators in Battle City
Replies: 31
Views: 1802

Re: Different behaviour between real NES and Emulators in Battle City

If, using the tile editor in Mesen, I clear the brick tiles, the title is now inbisible, but in the demo screen collisions between bullets/tanks still happen against this now "invisible" Battle City title. Look at what happens if you use the tile editor in Mesen to clear the tiles for the...
by Bavi_H
Thu Jun 30, 2022 7:54 am
Forum: NESdev
Topic: Different behaviour between real NES and Emulators in Battle City
Replies: 31
Views: 1802

Re: Different behaviour between real NES and Emulators in Battle City

I checked using Mesen and Battle City does indeed 2 uninitialized RAM reads at the beginning (before showing the BATTLE CITY title) One: [$0110 to $011F] Note: In order to keep values like the high score after a reset, a game will check some uninitialized memory to see if it is an expected value th...
by Bavi_H
Thu Jun 30, 2022 7:41 am
Forum: NESdev
Topic: Different behaviour between real NES and Emulators in Battle City
Replies: 31
Views: 1802

Re: Different behaviour between real NES and Emulators in Battle City

In order to draw the "BATTLE CITY" bricks, it looks like the PRG code reads CHR tile definition bytes for the letters in "BATTLE CITY", builds up tile IDs for the corresponding brick quadrant tiles in RAM, then copies those tile IDs from RAM to the nametable. In your repo cart, c...
by Bavi_H
Sat Jun 11, 2022 10:19 am
Forum: phpBB Issues
Topic: Losing login cookie constantly
Replies: 11
Views: 835

Re: Losing session cookie constantly

Note: I think the messages about the missing SameSite attribute are referring to new cookies the server just sent. In other words, those messages probably aren't a helpful lead to figure out what caused the previous cookies to get discarded or otherwise not sent to the server. The messages just seem...
by Bavi_H
Sat May 28, 2022 7:12 am
Forum: SNESdev
Topic: Regarding 4:3 and 8:7. . . .
Replies: 90
Views: 4121

Re: Regarding 4:3 and 8:7. . . .

are you confused about what I mean when I talk about how things look like when proportionally correct vs proportionally incorrect? If your assessment only involves looking at a particular game in the different possible ratios, then picking the one that looks best to you without actually measuring a...
by Bavi_H
Fri May 27, 2022 8:04 pm
Forum: SNESdev
Topic: Regarding 4:3 and 8:7. . . .
Replies: 90
Views: 4121

Re: Regarding 4:3 and 8:7. . . .

how are you judging what is proportionally correct. Perfect Circles? circles are certainly one of but not the only things that can have correct proportions. If you specify specific graphical items in each game that you believe should appear as a perfect circle or a perfect square or state the exact...
by Bavi_H
Thu May 19, 2022 10:53 am
Forum: 2022 NESdev Competition
Topic: Onyx: A Text Adventure
Replies: 19
Views: 1727

Re: Onyx: A Text Adventure

I am looking for feedback on the interface. Having to use the B button to select things feels unusual. I think using A to select things is more common? Consider clearing the bottom panes between commands. Because the text in the bottom panes is still visible during the MORE prompts, it sort of feel...
by Bavi_H
Wed May 18, 2022 3:13 am
Forum: NES Music
Topic: FDS unable to utilize the DPCM channel?
Replies: 11
Views: 798

Re: FDS unable to utilize the DPCM channel?

Playing several FDS games over the years, I couldn't help but notice that none of them use the DPCM channel for drums or samples. [...] It got me wondering, could disk loaded games utilize the channel at all? If so, which game(s) use(d) it? I've recently been examining and building ROM hacks for th...
by Bavi_H
Fri Jan 28, 2022 10:04 pm
Forum: Newbie Help Center
Topic: How to make Castlevania start on the second loop? (stage 19)
Replies: 3
Views: 558

Re: How to make Castlevania start on the second loop? (stage 19)

Here's some ideas how I would approach this: Use the cheat search feature of an emulator to scan for a RAM address that remains at the same value at various points in time on the first level, then changes to a new value when you progress to the next level. Alternatively, look in the wiki section of ...
by Bavi_H
Sun May 16, 2021 4:27 pm
Forum: Homebrew Projects
Topic: Witch n' Wiz - Out Now!
Replies: 20
Views: 14671

Re: Witch n' Wiz - Puzzle Platformer

lidnariq wrote: Sun May 16, 2021 4:22 pmI like the music visualization tool. Is it public?
Yes! I saw rainwarrior re-tweet it a few days ago:

https://twitter.com/cacciatc/status/1393430880073371651
https://github.com/zeta0134/mesen-piano-roll
by Bavi_H
Sat Apr 24, 2021 5:36 pm
Forum: Newbie Help Center
Topic: Conversion chart for APU writes to notes?
Replies: 14
Views: 7737

Re: Conversion chart for APU writes to notes?

These pages on the Nesdev wiki may also be useful:

APU basics - Playing a musical note
APU period table