Search found 398 matches
- Thu Dec 10, 2020 10:49 am
- Forum: NESdev
- Topic: .fds format: Can checksums be heuristically detected?
- Replies: 51
- Views: 18093
Re: .fds format: Can checksums be heuristically detected?
I have a stack of Roland sample disks, if you want to play around with them. Density is exactly the same as FDS. I've used FDSStick to read them out before, but haven't tried analyzing the format.
- Fri Dec 04, 2020 7:31 pm
- Forum: NESdev
- Topic: .fds format: Can checksums be heuristically detected?
- Replies: 51
- Views: 18093
Re: .fds format: Can checksums be heuristically detected?
I think the gap issues, and mechanism behind it is pretty well understood. There are games larger than 64k per side, so a 64k restriction doesn't make sense to me. NewRisingSun proposed a "kitchen sink" format that seemed reasonable to me but it was pulled. Seems like something like that is necessar...
- Sun Jul 19, 2020 7:47 pm
- Forum: NES Hardware and Flash Equipment
- Topic: FDSStick: writing back .raw files
- Replies: 4
- Views: 3488
Re: FDSStick: writing back .raw files
The FDSStick software looks for the first few bytes of a disk header ("block type 1"). It doesn't find it and gives up. I don't know how you're generating your raw files but something doesn't look right. Compare with a dumped image. Values in a .raw file are just timing between pulses on the data pi...
- Mon Jun 22, 2020 6:55 am
- Forum: NES Hardware and Flash Equipment
- Topic: FDSStick: writing back .raw files
- Replies: 4
- Views: 3488
Re: FDSStick: writing back .raw files
If you send me sample files I'll try to figure out what's wrong.
There is no header / footer, that's just junk data.
There is no header / footer, that's just junk data.
- Fri Oct 18, 2019 3:01 am
- Forum: NES Hardware and Flash Equipment
- Topic: Why are Famicom Disk Systems so picky?!@...
- Replies: 10
- Views: 7371
Re: Why are Famicom Disk Systems so picky?!@...
http://3dscapture.com/junk/FDSStick_debug_20171229.exe Use a known good disk (written by a properly calibrated drive) for adjusting your drive. Preferably a real commercial disk, not bootleg/copied. Push the "Test" button to scan a disk. The software shows a graphical representation (blue wavy line...
- Thu Apr 04, 2019 12:17 pm
- Forum: NESemdev
- Topic: Famicom Disk System emulation
- Replies: 17
- Views: 17206
Re: Famicom Disk System emulation
The wiki is crap. Brad Taylor's .txt file (linked at the bottom of the wiki) is much more useful.byuu wrote:Oh boy. The wiki needs some serious updates, then. I'll also add:
- Sat Mar 09, 2019 6:07 pm
- Forum: NES Hardware and Flash Equipment
- Topic: The state of PowerPak mappers
- Replies: 32
- Views: 20743
Re: The state of PowerPak mappers
You're free to use the code however you like, consider it public domain.
- Sat Mar 09, 2019 12:02 pm
- Forum: NES Hardware and Flash Equipment
- Topic: FDSStick (256M version) software question
- Replies: 5
- Views: 8986
- Fri Mar 08, 2019 2:24 pm
- Forum: NES Hardware and Flash Equipment
- Topic: FDSStick (256M version) software question
- Replies: 5
- Views: 8986
Re: FDSStick (256M version) software question
That code on github is ancient, it's not compatible with the current firmware. I can put up something more current, it might take a few days though.
- Mon Mar 04, 2019 1:44 am
- Forum: NES Hardware and Flash Equipment
- Topic: The state of PowerPak mappers
- Replies: 32
- Views: 20743
Re: The state of PowerPak mappers
It's been ages since I've gone over the powerpak MMC3 code, but I'll dig it up if there's something that needs fixing. I have MMC3A,B,C carts I can test on if needed.
- Thu Feb 14, 2019 5:05 pm
- Forum: NES Hardware and Flash Equipment
- Topic: Oversize FDS disk images
- Replies: 40
- Views: 37735
Re: Oversize FDS disk images
The largest Game Doctor image I have is 66458 bytes (and that's really pushing the limits). The largest Game Doctor game I've seen is 12 sides. I guess 13, if you want to count the saver disk -- some Game Doctor devices do save states which adds another disk, I don't know if you want to accomodate t...
- Mon Feb 11, 2019 6:05 pm
- Forum: NES Hardware and Flash Equipment
- Topic: Oversize FDS disk images
- Replies: 40
- Views: 37735
Re: Oversize FDS disk images
They are just cartridge games ported/hacked to run from disk (that was the purpose of Game Doctor after all). I'm not aware of any original games made specifically for game doctor hardware. There's nothing special about the disks themselves (aside from the size), they follow the standard FDS disk fo...
- Wed Feb 06, 2019 3:51 pm
- Forum: NES Hardware and Flash Equipment
- Topic: Oversize FDS disk images
- Replies: 40
- Views: 37735
Re: Oversize FDS disk images
Even if you're right, why make a format that relies on a bunch of assumptions? Simpler solutions exist, I don't know why you're doubling down on this point.
- Wed Feb 06, 2019 2:15 am
- Forum: NES Hardware and Flash Equipment
- Topic: Oversize FDS disk images
- Replies: 40
- Views: 37735
Re: Oversize FDS disk images
Welp, you asked for opinions, you got mine. I'm a fan of KISS.
It's your thing, do what you like. As you said, it's for your own emulator and not likely to see adoption anyway so go nuts and make a FDS 2.0.
It's your thing, do what you like. As you said, it's for your own emulator and not likely to see adoption anyway so go nuts and make a FDS 2.0.
- Wed Feb 06, 2019 1:59 am
- Forum: NES Hardware and Flash Equipment
- Topic: Oversize FDS disk images
- Replies: 40
- Views: 37735
Re: Oversize FDS disk images
*shrug* Inconvenience of multiple files, or inconvenience of another new unsupported (except in your own emulator) format. I prefer the former, personally... Every Game Doctor and Magicard disk still uses the \x01*NINTENDO-HVC* disk header, so I do not follow. If a game happens to have 0x01,0x2A in...