nesdev.org

Great Hierophant wrote:I don't know of an emulator that supports disabling the short-noise period, although there were many early Famicoms that used revisionless 2A03 CPUs, and not just the square buttons. I would think that the Vs and Famicom versions of Balloon Fight were probably being developed in tandem. Even without the short noise there is still something of a buzz in the Vs System version, as shown in MAME.

There is a little buzz because (IIRC) one pulse channel is used at 25% duty to make a low buzz when the player is hit. It's also possible the MAME APU implementation is based on an existing NES emulator, which won't respect the lack of short noise.

mikejmoffitt wrote:

Great Hierophant wrote:I don't know of an emulator that supports disabling the short-noise period, although there were many early Famicoms that used revisionless 2A03 CPUs, and not just the square buttons. I would think that the Vs and Famicom versions of Balloon Fight were probably being developed in tandem. Even without the short noise there is still something of a buzz in the Vs System version, as shown in MAME.

There is a little buzz because (IIRC) one pulse channel is used at 25% duty to make a low buzz when the player is hit. It's also possible the MAME APU implementation is based on an existing NES emulator, which won't respect the lack of short noise.

That makes sense, although there is still something of a difference perhaps between the two. I thought that MAME did not implement the short noise period for accuracy purposes. However its PPU implementation will win no prizes.

Quick question: What colour is the screen when you turn the NES on with no game?

Polar Hacker wrote:Quick question: What colour is the screen when you turn the NES on with no game?

The simple answer would be color #00 - gray (or grey??), but I could be wrong. edit: colour or color? Gray or grey?

mikaelmoizt wrote:

Polar Hacker wrote:Quick question: What colour is the screen when you turn the NES on with no game?

The simple answer would be color #00 - gray, but I could be wrong.

nescolors.gif

I'm wondering if different revisions of motherboards have different colours. The one I have (04) is pink. I had one a little while back (didn't check the number), which had a green screen.

mikaelmoizt wrote:edit: colour or color? Gray or grey?

Depends on the country =P

The power-on-color is a function of trivial differences in the inverters that make up the PPU's palette RAM... and to a lesser extent, the exact rate at which Vcc rises when you turn the NES on. (I say "lesser" because that's more or less only a function of the electrolytics in the power supply)

So, differences in individual PPU dice, sure. Differences in how the electrolytics have aged, sure. But I doubt there's any significant trend across mainboard revisions without an accompanying change of PPU or the electrolytic sizes.


(tangent): Officially, "color" is US, "colour" is UK, and I don't know what the rest of the english-speaking world does.
Also, officially, "gray" is US, but I think that spelling is ugly

lidnariq wrote:The power-on-color is a function of trivial differences in the inverters that make up the PPU's palette RAM... and to a lesser extent, the exact rate at which Vcc rises when you turn the NES on. (I say "lesser" because that's more or less only a function of the electrolytics in the power supply)

So, differences in individual PPU dice, sure. Differences in how the electrolytics have aged, sure. But I doubt there's any significant trend across mainboard revisions without an accompanying change of PPU or the electrolytic sizes.


(tangent): Officially, "color" is US, "colour" is UK, and I don't know what the rest of the english-speaking world does.
Also, officially, "gray" is US, but I think that spelling is ugly

Interesting. I was wondering, because there is something similar for finding the firmware version on a DS. (https://en.wikipedia.org/wiki/Nintendo_ ... re_version)
Eh? = color.
I prefer grey as well.

lidnariq wrote:(post)

Interesting. I know there is always some power-on quirkiness to explain every time some one asks what color (see!) is defaulted and contents of ram for example.
My famiclone actually cycles between startups giving green, pinkish and grey(..) for some reason.

Also, I was taught British English in school. With all the bloody bollocks from worcestershire you can imagine

I don't think I've ever seen anything but gray on PAL NESes (not a huge sample). At least one of my NTSC NESes boots up to yellow.

Polar Hacker wrote:Quick question: What colour is the screen when you turn the NES on with no game?

I've seen systems that do 00 (dark gray) and systems that do 28 (yellow).

The DS effect (dubbed "TakeMeOut" by homebrewers during the DS era based on its resemblance to a PSP-related video that uses a Franz Ferdinand song) is different. It probably occurs because the firmware loads a value into the palette backdrop that's normally never used, and different versions of the firmware happen to have different values at that address.


"Take Me Out" mashed up with Mr. Resetti's theme

My Famicom usually boots grey. My NES usually boots blue.

I never seen anything but grey. Both on my late SCN PAL NES and all Famicoms I've come across.

tepples wrote:

Polar Hacker wrote:Quick question: What colour is the screen when you turn the NES on with no game?

I've seen systems that do 00 (dark gray) and systems that do 28 (yellow).

The DS effect (dubbed "TakeMeOut" by homebrewers during the DS era based on its resemblance to a PSP-related video that uses a Franz Ferdinand song) is different. It probably occurs because the firmware loads a value into the palette backdrop that's normally never used, and different versions of the firmware happen to have different values at that address.


"Take Me Out" mashed up with Mr. Resetti's theme

I never knew that was connect with the PSP. Cool. I don't think I seen a grey screen on a NES before. (It's not like I boot tons of NESs with no game inside). So, is there no connection between the board revisions and the screen color (colour)?

I've seen darker blue, gray, purple, and light blue screens on NES systems with no cartridge inside.