817

(11 replies, posted in General Discussion)

http://www.youtube.com/user/bibinson

Yes. Don't do the mod exactly like this. smile
Use a jack with a nut like the one Apeshit posted a pic of, so the force is applied there instead.
Or find a connector with only one jack, so the back is metal and the pins are on the bottom.
Or, if you want to fixate the jack using the current method, you could maybe put hot glue behind the jack. But then you may still have the same problem, and it's also harder to bend back the pins if there's a problem.

Out-Line wrote:

Criticisms are accepted.

Well, if you insist. It seems like you're putting the connector in the space on the side without being fixed to the case in any way. Every time you insert the plug, you apply a small bit of pressure to the pins on the back, and they might bend and short in the long term. This is not an immediate problem, but worth keeping in mind.

kitsch wrote:

since youtube is a google company now, is otromatic[at]gmail[dot]com not linked to him somehow just by some default process?  (at the least, a working email he would be able to access, hopefully forwarded to one he checks)

Nope, not necessarily. While all YT accounts have to be linked to a Google account nowadays, there's no guarantee that the names match.

This may just be a DNS configuration error. The domain doesn't have any entries, but the page is still online on the IP address 194.150.236.81. You could add

194.150.236.81    ilbm.info www.ilbm.info

to your hosts file to be able to access it. However, it's only a front page with some of his art and... a contact address. ink at ilbm dot info. However, this address will also be dead as long as the domain is misconfigured. However, he still owns the domain, and looking at the whois records, you can find a contact e-mail address.
http://who.is/whois/ilbm.info

Full stop.

821

(15 replies, posted in Other Hardware)

Justo nit(ro)pick a little more. DNA and mineral spirits are not the same thing. DNA is denaturated alocohol, ie ethanol with a bitter ingredient added to stop you from drinking it. Mineral spirit is a hydrocarbon based solvent, pretty much the same thing as gasoline, but longer carbon chains, so a little denser and a little higher boiling point than gasoline. I would be wary of using mineral spirit on electronics because I'd be afraid it might degrade the quality of the chip carrier, or the glue between the board and the copper. I don't know for sure that this is the case, I would avoid it unless I knew it was safe. I'm not talking about immediate destruction here, but long term reliability, say that the cartridge edge connectors might be more likely start to come loose after 1000 insertions.

822

(15 replies, posted in Other Hardware)

Actually, the isopropanol+toothbrush method isn't really necessary in this case. It's great for removing flux residues after soldering, because this type of residue doesn't dissolve well in water, so you need both a solvent and some force to get it off.

What I would recommend, unless you live in an area with hard water (ie mineral rich water) is to open up the cartridge, take out the battery, rinse it in tap water, and leave it to dry.
Note that removing the battery erases any save data, so make sure you back it up before doing this.
The crucial part is getting it dry. Something like rice or silica gel bags can be useful here.

Additional information:

There are three different ways electronics can fail due to water.
1) The component itself is sensitive to moisture, typically because it contains something that can react with water. For a GB cartridge, this would be the battery, which contains lithium, and the electrolytic capacitors, which contain an aluminum electrolyte. They will probably both be sealed well enough that a quick rinse will not destroy them, but at least you can remove the battery so you probably should. Other than that, the components do not get damaged by short exposure to water.
2) Shorting. If the device is powered while exposed to water, especially a liquid with a lot of electrolytes like, uhm, beer, two points in the ciruit might be shorted and cause damage. Unless something is actually damaged while the liquid is still on the circuit, this is not fatal.
3) Corrosion. The traces on the circuit board, the solder and the component leads are obviously made out of metal and might corrode ("rust"). This process can be accelerated if any kind of electrolytes are present. Not that simply leaving the PCB to dry is not enough if there's residue left, as will almost certainly be the case with the beer. Moisture will be picked from the air and slowly corrode whatever components are covered in the gunk. You should absolutely clean this up one way or the other.

As for point 3, hard tap water, and even soft tap water will leave some amount of residue. I wouldn't worry about that unless you can see a visible amount of residue when the water dries up. If you can get it or make it, distilled water is even better. Making it could be a fun experiment. If you're still in school, they probably have bottles of distilled water in the chemistry halls.

Good luck.

823

(44 replies, posted in Trading Post)

Still up for grabs.

Hmm. You can't get the wave channel to sound EXACTLY like one of the pulse channels. What about CH1 and CH2 share a MIDI channel, and CH3 has it's own MIDI channel, or alternatively a key split, for use with a keyboard.

Like this apparently:

I'm very interested in these but can't really afford to pay even 50€ for anything right now. I'm interested in kind of clones to do teardowns and high-res photo documentation. See this. I know it might be much to ask, but do you think it would be possible for me to borrow one of those for a while for such purposes?

826

(3 replies, posted in Software & Plug-ins)

The author officially supports running BGB in Wine on x86 processors. Raspberry Pi is using an ARM CPU, however. You could pester the author to port it to RPi, but I have a feeling he won't do it, at the very least not in time for your project.

stargazer wrote:

Just buy it from DJ transformer. I hear he's a reputable guy. wink

Is this sarcasm, or have you missed the threads about him?

828

(18 replies, posted in Nintendo Handhelds)

Cuddle Television: What the hell are you talking about?

829

(19 replies, posted in General Discussion)

Possibly of interest; http://chipmusic.org/forums/topic/6141/fate-of-midines/

830

(18 replies, posted in Nintendo Handhelds)

The checksum value is just two bytes, or 16 bits big, so it can take on any value between 0 and 65535 (or in hexadecimal 0-FFFF). Since this is far less than the many thousands of bits that a typical ROM contains, there must be many (out of all completely random combinations) of ROM contents that give the same checksum.

831

(18 replies, posted in Nintendo Handhelds)

014E-014F

http://nocash.emubase.de/pandocs.htm#thecartridgeheader

832

(18 replies, posted in Nintendo Handhelds)

The checksum is a value that is calculated from all the bytes in the ROM to ensure that the ROM has not been corrupted. If there are any changes in the ROM, the checksum changes (unless you're extremely unlucky) and a verification process can detect this. Nintendo used this back in the day when people submitted Gameboy games on floppy disks to make sure the ROMs were not corrupted. If you care about this value being correct, you can use the RGBFix tool from the RGBDS assembler package.

You can also do this in BGB. Press esc to bring up the debugger window. Select file, fix checksums then file, save as and select where you want to save the file.