Search found 1114 matches

by nocash
Tue Jan 21, 2020 10:43 pm
Forum: Other Retro Dev
Topic: 3DS reverse engineering
Replies: 180
Views: 93134

Re: 3DS reverse engineering

Would it help to put the two diodes in parallel? I imagine that way they'd at least give the same voltage drop, but half the current would be passing through each. That would be about same voltage drop as one diode (half drop of two diodes in series). And I have heard that two diodes in parallel is...
by nocash
Tue Jan 21, 2020 1:04 pm
Forum: Other Retro Dev
Topic: 3DS reverse engineering
Replies: 180
Views: 93134

Re: 3DS reverse engineering

Quite hot like 50'C or a bit more. It doesn't cause burns on my fingers, but it's ways above just 25'C.
Well, yes, that might be room temperature 18'C plus 25'C... but it feels a bit hotter than that.
by nocash
Tue Jan 21, 2020 12:38 pm
Forum: Other Retro Dev
Topic: 3DS reverse engineering
Replies: 180
Views: 93134

Re: 3DS reverse engineering

The RL78 short address disassembly was in fact wrong, my MCU disassembly is about 10000 lines, and it did have about 500 mistakes with wrong addresses : / I got it repaired by spending 3-4 days on carefully using search/replace to fix the addresses (the RAM addresses were relative easy (but needed c...
by nocash
Mon Jan 13, 2020 8:40 pm
Forum: NES Graphics
Topic: Free NES assets
Replies: 6
Views: 6106

Re: Free NES assets

On the stonelands picture... I am lost... what are floors and what are walls?
by nocash
Mon Jan 13, 2020 5:56 pm
Forum: Other Retro Dev
Topic: 3DS reverse engineering
Replies: 180
Views: 93134

Re: 3DS reverse engineering

The battery charging is still bad. It takes endless to reach 100%, still consumes 0.15A when switched off with battery at 100%, and tends to discharge overnight to 0% when switched off, without charger attached (I've tried to power-off from within wifiboot, and fastboot, and it's both 0.15A). So, we...
by nocash
Sat Jan 11, 2020 2:38 am
Forum: phpBB Issues
Topic: Auditing your own word censors.
Replies: 16
Views: 679

Re: Auditing your own code.

I like the replacement, it's quite funny, and it does hardly hit non-spam posts. The post about building a PC for my mom was probably meant as-so... although some people do probably really build PCs for getting paid with special goods ; ) If anything, it's possibly a bit unfair for real moms. Someth...
by nocash
Sat Jan 11, 2020 12:30 am
Forum: Other Retro Dev
Topic: 3DS reverse engineering
Replies: 180
Views: 93134

Re: 3DS reverse engineering

Very empty. LiIon/LiPoly discharge curves look like this: https://i.stack.imgur.com/LV91V.gif Definitely not normal. Fully powered off it can survive months without charge. Thanks. Okay, if 3.6V is empty, and if it isn't caused by known software issues... I've now checked the fuse on the back side ...
by nocash
Fri Jan 10, 2020 6:10 pm
Forum: phpBB Issues
Topic: Auditing your own word censors.
Replies: 16
Views: 679

Re: Auditing your own code.

The filter does replace "via-gra" by "my mom", maybe other words, too. That might explain some confusing spam posts that had occured in past some years, like people offering to "buy (my mom) online"... it might also shed new light on posts from people telling that they were "building a desktop PC fo...
by nocash
Fri Jan 10, 2020 2:51 am
Forum: NESdev
Topic: Auditing your own code.
Replies: 9
Views: 845

Re: Auditing your own code.

I have some doubts that we are talking about the "binary and related files" of a NES ROM image here... might be as well another generic spam post? On the other hand, an infected NES game would probably also display spam messages about !cruddy 3V bootleg carts (word replaced by spam filter) instead o...
by nocash
Fri Jan 10, 2020 1:45 am
Forum: Other Retro Dev
Topic: 3DS reverse engineering
Replies: 180
Views: 93134

Re: 3DS reverse engineering

Just checked again... the New3DS Xl battery is Li-Ion 1750mAh 3.7V (not 4.2V)... and I am measuring 3.6V on the battery contacts (on the raw/removed battery, and same voltage also when charging, with console being either powered on or off)). Does that sound charged, or did you mean that it should ex...
by nocash
Thu Jan 09, 2020 11:46 pm
Forum: Other Retro Dev
Topic: 3DS reverse engineering
Replies: 180
Views: 93134

Re: 3DS reverse engineering

Time for Battery/Power related stuff... First of, while messing with the battery pins, I've blown the fuse near the external supply connector, and melted the 4pin coils next to it. After removing/briding that components... the damn thing does still work... destroying the power supply would have been...
by nocash
Wed Jan 08, 2020 8:54 pm
Forum: Other Retro Dev
Topic: 3DS reverse engineering
Replies: 180
Views: 93134

Re: 3DS reverse engineering

Oh, I had misremembered that (I was thinking that it happened only on SHA_OUT readback, instead of SHA_IN). Hmmm, there are various ways to DMA (via NDMA, XDMA, CDMA) and various ways to do CPU transfers... I have tested ARM9 CPU and ARM9 NDMA, both just writing 64Kbytes of "filldata" to the SHA uni...
by nocash
Tue Jan 07, 2020 8:05 pm
Forum: Other Retro Dev
Topic: 3DS reverse engineering
Replies: 180
Views: 93134

Re: 3DS reverse engineering

And some more info on SHA Registers . Apart from general clean-up, new details are... That the length is being counted in byte-units, and that (and when) the length is automatically being updated by hardware... and info on how to write single bytes to the FIFO (eg. needed & working when length is od...
by nocash
Tue Jan 07, 2020 7:23 pm
Forum: Other Retro Dev
Topic: 3DS reverse engineering
Replies: 180
Views: 93134

Re: 3DS reverse engineering

Okay, PKCS means Public-Key Cryptography Standards, and that OID stuff is called ASN.1. Yeah, that seems to pre-date the RFC 4880 OpenPGP specs that I had referred to. The advantage of the OpenPGP specs is that they contain some kind of eye-catching tables; the PKCS specs are looking so abstract tha...
by nocash
Sun Jan 05, 2020 10:51 pm
Forum: Other Retro Dev
Topic: 3DS reverse engineering
Replies: 180
Views: 93134

Re: 3DS reverse engineering

RSA hardware is now more or less rev-engineered on hardware level. The old docs did have "big-endian" confused with "little-endian" byte order, plus unspecified "normal" and "reversed" word orders, and very little info on data aborts and slotcnt/slotsize registers... I have rewritten pretty much ev...