Search found 336 matches

by frantik
Sun Nov 29, 2020 6:16 pm
Forum: NES Music
Topic: PCM Drum machine / sampler
Replies: 24
Views: 11990

Re: PCM Drum machine / sampler

This is something that's been in the back of my mind for a while... still need to work on the interface but the proof of concept is working! I've got timing linked to NMI so that samples can be pitched via variable sample rate. I'm using a " clockslide " to create variable sample rates, which is som...
by frantik
Wed Oct 07, 2020 1:24 am
Forum: NES Music
Topic: Is $4011's default value $00 at start up?
Replies: 7
Views: 1252

Re: Is $4011's default value $00 at start up?

Oddly, SMB does something like that, too. It ramps it up to $30 when you're playing, then ramps it down to $00 when you die. But why, it's a mystery. yeah, that's the game I'm adding the sounds too :D (turn on audio).. that's an old version with the pops I was mentioning. SMB only ramps up while ma...
by frantik
Tue Oct 06, 2020 10:54 pm
Forum: NES Music
Topic: Is $4011's default value $00 at start up?
Replies: 7
Views: 1252

Re: Is $4011's default value $00 at start up?

I can live with the pop at start up but the code I'm adding these samples later sets 4011 back to 00 to use the volume control that you mentioned. I never heard it pop at start up until I added my code. I think I might try out the ramping in and out thing, I don't think it should be audible if it's ...
by frantik
Tue Oct 06, 2020 6:51 pm
Forum: NES Music
Topic: Is $4011's default value $00 at start up?
Replies: 7
Views: 1252

Is $4011's default value $00 at start up?

I'm working on some code which streams PCM audio to 4011.. with 7 bit pcm data, the value of $40 represents the middle of the waveform and is "silence".. but I notice in emulators that I'm getting a "pop" in my initialization code when I set 4011 to $40 before I play the samples. I'm not sure if thi...
by frantik
Sat Oct 03, 2020 3:24 pm
Forum: NES Graphics
Topic: Is $08 "brown" or "olive" ? Why does it vary so much from screen to screen?
Replies: 29
Views: 10010

Re: Is $08 "brown" or "olive" ? Why does it vary so much from screen to screen?

I noticed Nintendo released Super Mario Bros 35 the other day.. they clearly have decided than $22 is officially that weird purplish color.. it's interesting if you look at SMB hack screen shots over time, more recent hacks tend to use the purple color but older ones are a range of blue shades. Kind...
by frantik
Wed Sep 23, 2020 4:10 pm
Forum: NES Graphics
Topic: Is $08 "brown" or "olive" ? Why does it vary so much from screen to screen?
Replies: 29
Views: 10010

Re: Is $08 "brown" or "olive" ? Why does it vary so much from screen to screen?

It seems like even various NTSC filters can't agree on this color.. in Mesen if you choose Blargg's NTSC filter, you will get more olive tones, while Bisqwit's is definitely brown. I feel like Bisqwit's is closer to my TV though the composite effect is really heavy handed. I went through various col...
by frantik
Mon Sep 21, 2020 6:15 pm
Forum: NESdev
Topic: MMC1 acting differently on PowerPak vs Emulator, not always bankswitching
Replies: 2
Views: 1493

Re: MMC1 acting differently on PowerPak vs Emulator, not always bankswitching

Thanks, that was indeed the problem! I was worried it was gonna be something complicated
by frantik
Mon Sep 21, 2020 5:51 pm
Forum: NESdev
Topic: MMC1 acting differently on PowerPak vs Emulator, not always bankswitching
Replies: 2
Views: 1493

MMC1 acting differently on PowerPak vs Emulator, not always bankswitching

I have a rom which implements "animation" by flipping the CHR bank every few frames. There are 8 banks of CHR (4 pairs of background and sprite data) This has been working fine for a long time. I recently added an additional two banks of CHR onto this rom to add an intro. On multiple emulators every...
by frantik
Wed Sep 09, 2020 6:31 am
Forum: Newbie Help Center
Topic: Trying to save with MMC1 and FCEUX
Replies: 5
Views: 2836

Re: Trying to save with MMC1 and FCEUX

got dem save games going.. aww yissss even added a nice lil menu interface ala super mario world.. some of the most complex 6502 code I've written so far, starting to pretty comfortable with it as a language
by frantik
Mon Sep 07, 2020 12:39 pm
Forum: NES Graphics
Topic: Is $08 "brown" or "olive" ? Why does it vary so much from screen to screen?
Replies: 29
Views: 10010

Re: Is $08 "brown" or "olive" ? Why does it vary so much from screen to screen?

lidnariq wrote:
Sun Sep 06, 2020 8:16 pm
not the human eye and brain :P
you do bring up yet another layer of difficulty with color perception though... :twisted:
by frantik
Sun Sep 06, 2020 8:02 pm
Forum: NES Graphics
Topic: Is $08 "brown" or "olive" ? Why does it vary so much from screen to screen?
Replies: 29
Views: 10010

Re: Is $08 "brown" or "olive" ? Why does it vary so much from screen to screen?

Color $08 according to this site: RGB #523000 color description : Very dark orange [Brown tone]. according to which site? that color is much more what $08 looks like on my tv.. but every "accurate" emulator and lcd display includes way more green Again? https://www.colorhexa.com/808000 where are th...
by frantik
Sun Sep 06, 2020 2:45 pm
Forum: Newbie Help Center
Topic: Trying to save with MMC1 and FCEUX
Replies: 5
Views: 2836

Re: Trying to save with MMC1 and FCEUX

If FCEUX is your main emulator, might be worth pointing out that it also has an iNES header editor at this point. It's in the debug menu. (It's not in the 2.2.3 official release, but the interim build here has it.) thanks I'll check it out.. also just subbed to your you tube channel last night, I r...
by frantik
Sun Sep 06, 2020 12:58 pm
Forum: NES Graphics
Topic: Is $08 "brown" or "olive" ? Why does it vary so much from screen to screen?
Replies: 29
Views: 10010

Re: Is $08 "brown" or "olive" ? Why does it vary so much from screen to screen?

Zepper wrote:
Sat Sep 05, 2020 6:03 am
Color $08 according to this site:
RGB #523000 color description : Very dark orange [Brown tone].
according to which site? that color is much more what $08 looks like on my tv.. but every "accurate" emulator and lcd display includes way more green
by frantik
Thu Sep 03, 2020 2:07 am
Forum: NES Graphics
Topic: Is $08 "brown" or "olive" ? Why does it vary so much from screen to screen?
Replies: 29
Views: 10010

Re: Is $08 "brown" or "olive" ? Why does it vary so much from screen to screen?

And you're gonna have issues from CRT to CRT (not just red-push or not, but how people have settings adjusted). And there's still the same issue on LCD to LCD. Depending on the color, it could have issues there as well (PC-Engine 9bit color palette has a few problem colors like this, even on LCDs)....
by frantik
Thu Sep 03, 2020 1:42 am
Forum: Newbie Help Center
Topic: Trying to save with MMC1 and FCEUX
Replies: 5
Views: 2836

Re: Trying to save with MMC1 and FCEUX

lidnariq wrote:
Wed Sep 02, 2020 10:18 pm
Maybe try Mesen's or Nintendulator's header editor?
thanks I used Nintendolators editor and realized I was looking at the wrong byte in the header :roll: :roll: :roll: I knew it was something simple