nesdev.com

Do you really need the uncompressed 512 byte FAT sector, and the 512 byte DATA sector at the same time?

Whenever I hear the term "adventure" I picture someone picking up a sword and slaying dragons. Wouldn't that be a "big-game trophy hunting game", or a "fantasy safari slayer game"? I would say that real adventures are about solving any kind of bigger or smaller problems that are unexpectedly encoun...

Would an honest box for a Minesweeper clone look like a bunch of soldiers using metal detectors? Yes, except that mine clearing is a painstaking decades-long task, more likely left to civilians, not to soldiers posing with machine guns (and whom are suspectable of having planted mines in the first ...

PPS. All CDROM data sectors (including those on for CD-XA discs) are internally stored inside of 930h-byte CD-DA audio sectors. The bytes are encoded as optical codes (as far as I remember, each code is 10bit wide, with 256 valid codes for 256 bytes, and several invalid codes) (and maybe the optical...

CD-XA can use FORM1 sectors with 800h bytes and error correction, or optionally, FORM2 sectors with 914h bytes without error correction. The sector CRC is optional for FORM2, if the CRC is missing then you won't even see if there are errors. Maybe that's the problem? The burner might have tried to u...

Yes, that's interesting. Two basic questions:
- Is it lossless compression, allowing to restore the exact original BRR data?
- Did you already test different BRR files, including speech and other random sounds?

I wouldn't follow Nintento's naming scheme that strictly... you could hardly say that the RTC chip isn't a special chip because Nintendo had declared the RTC chip being... an SRAM chip? The nice thing about the Special Chip column is that it can contain a human-legible description of what kind of sp...

You don't need the launcher. What you need is being able to load homebrew, if that is working, then the first step should be dumping the emmc chip, and then check if it is corrupted... eg. try if the emmc dump works in no$gba, or decrypt it and use scandisk to check for errors. Btw. what did you do ...

The http://snescentral.com/pcblisting.php does look much better now, with the chipset info added to the board names. One thing is missing are the RTC cips... For SHVC-LJ3R-01 add special chip S-RTC. For SHVC-LDH3C-01 add special chip SPC7110 + RTC-5413. Why are the ST010..ST018 board listed with "0"...

That does still happen, even after power-off? And you can't boot any software? Looks bad, might be corrupted emmc, or corrupted wifi flash, or - more simple - bad contact on the wifi board connector. I would first check the wifi board, if fhat doesn't help... the older unlaunch versions did work wit...

dougeff wrote: ↑

Fri May 29, 2020 6:12 am

Are you sure you mean SNES?

I think the post is about SRAM in SNES cartridges... but...
VRAM is short for Video RAM.
But there is no video memory in SNES cartridges (unlike NES cartridges).
SNES cartridges that do contain SRAM are using it for saving game positions.

Just looked at the GBA footer hexdump. The entries with file offsets and sizes and padding bytes are actually as guessed... so the format should look as so: GBA ROM-images are reportedly stored in .code files (in NCCH .app files, which can also contain the usual NCCH icon/banner/logo). Nintendo is u...

MCU events 24-29 correspond to the same bits in reg 0x22. One event for each bit. Good to know! I had missed IRQ 26,27,28,29 in my MCU disassembly. Now I've found them... and IRQ 18,19,20,21 are also used: MCU[10h-13h] - MCU Interrupt Flags, bit0-31 (1=IRQ, cleared after read) (R) MCU[18h-1Bh] - MC...

There were a number of small problems like not waiting for MCU events when MCU reg 0x22 got written. Is that for the "push" bit in MCU[22h].bit1? The bootrom doesn't seem to wait for "push" events, I am wondering what the "push" is good for (and of course, what "push" means at all). The I2C-LCD reg...

Uploaded no$gba v3.01 - http://problemkaputt.de/gba.htm - with lots of new details in the GPU specs. 3DS GPU External Registers - Memory Control/Status Registers A new chapter, describing the GPU memory/status stuff. The more obvious registers are memory traffic counters. For the other registers it'...