Search found 546 matches

by Jarhmander
Sat Jan 28, 2023 7:48 pm
Forum: NESemdev
Topic: Mesen - Emulator
Replies: 37
Views: 3589

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...
by Jarhmander
Sat Jan 28, 2023 8:35 am
Forum: NESdev
Topic: Can't get my old famicom work
Replies: 13
Views: 269

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...
by Jarhmander
Sat Jan 28, 2023 8:33 am
Forum: NESemdev
Topic: Mesen - Emulator
Replies: 37
Views: 3589

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!)
by Jarhmander
Fri Jan 27, 2023 11:19 am
Forum: NESdev
Topic: Can't get my old famicom work
Replies: 13
Views: 269

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...
by Jarhmander
Fri Jan 20, 2023 9:41 am
Forum: General Stuff
Topic: Desired Possible Inventions
Replies: 13
Views: 540

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.
by Jarhmander
Sat Jan 14, 2023 9:18 pm
Forum: NES Music
Topic: Saw Wave on DPCM channel w/ Famitracker
Replies: 14
Views: 642

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.
by Jarhmander
Fri Jan 13, 2023 3:39 pm
Forum: NES Music
Topic: Saw Wave on DPCM channel w/ Famitracker
Replies: 14
Views: 642

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...
by Jarhmander
Wed Jan 11, 2023 11:15 am
Forum: SNESdev
Topic: What is wrong with my SNES?
Replies: 3
Views: 315

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...
by Jarhmander
Wed Jan 11, 2023 6:29 am
Forum: NES Hardware and Flash Equipment
Topic: Modern Mapper Replacement Chips?
Replies: 27
Views: 1131

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?
by Jarhmander
Sun Jan 08, 2023 9:05 pm
Forum: GBDev
Topic: GameBoy Program Counter behaviour
Replies: 4
Views: 532

Re: GameBoy Program Counter behaviour

Open bus is whatever appeared on the data bus last; thus it is the last value the CPU have read/written. Indeed, if the last CPU fetch is the low byte of an memory address, then yes, that would be the open bus value, but if the instruction at 7FFF is a two or three byte instruction, then its remaini...
by Jarhmander
Sun Jan 08, 2023 12:27 pm
Forum: phpBB Issues
Topic: Weird smiley in some thread title
Replies: 9
Views: 722

Re: Weird smiley in some thread title

You made it disappear, didn't you? I can't see it anymore.
by Jarhmander
Wed Jan 04, 2023 2:03 pm
Forum: phpBB Issues
Topic: Weird smiley in some thread title
Replies: 9
Views: 722

Weird smiley in some thread title

Does anyone know what can cause that stray smiley? Does anyone see it when looking at that thread? On Chrome (108.0.5359.128) using Android 10. Screenshot_20230104_155133_com.android.chrome.jpg I can see it too when using Firefox (108.1.0 (Build #2015920443), 49ccb63dd+) It seems that the smiley is ...
by Jarhmander
Fri Sep 30, 2022 7:59 pm
Forum: Web Issues
Topic: HTTPS is broken
Replies: 30
Views: 44461

Re: HTTPS is broken

Thank you for your quick response!
by Jarhmander
Tue Sep 20, 2022 7:09 pm
Forum: General Stuff
Topic: Why a lot of 8-bit (or alike) developers think we loved excessive difficulty?
Replies: 49
Views: 13850

Re: Why a lot of 8-bit (or alike) developers think we loved excessive difficulty?

Call me a n00b, but I could only beat Megaman (1) on the PowerPak with save states. I also completed the 1st "run" of Recca with save states, there is simply no way I can beat this game normally, especially with the last boss which is insanely hard.
by Jarhmander
Tue Sep 06, 2022 11:32 am
Forum: SNESdev
Topic: Was the SPC700's noise channel based on the 2a03's noise channel?
Replies: 25
Views: 2605

Re: Was the SPC700's noise channel based on the 2a03's noise channel?

And I interpreted it as "it sounds bland in that game", sounding like a NES game. This was said in contrast to Super Mario World which used the LFSR noise cleverly to make good looking sounds. I wasn't aware of that, that's really neat.