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I've played around with my FDS unit recently and now managed to get some code running on it, thanks to blargg's serial routines! The objective is to find out the exact behavior and tweak the sound in the tracker accordingly, as there still are some known differences (the exact modulator behavior being one example).
I can also use this setup to play NSFs, so I thought I'd take some recording requests in case anyone is interested.
There are some limitations that must be considered, since I'm using an unmodified FDS RAM cart:
- Only FTMs are accepted since the NSF needs to be special built. (MML might work too since the player source is available, but I haven't tried that yet)
- The RAM cart is 32kB so exported NSFs cannot exceed this size.
- DPCM sample space is limited to 8kB! This is because the FDS BIOS occupies the last 8kB.
- Only 60Hz songs. The FDS is supposed to have an IRQ timer so this might change later.
Rushjet1's FDX would be a good place to start I think!
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I record (some) NSFs on hardware. Feel free to [url=http://www.famitracker.com/forum/posts.php?id=3633]request a hardware render.
[quote=robro]This is going to sound like a stupid question, but is this only for ftms that use the FDS expansion (ie a vrc7 track wouldn't work)?[/quote]
[quote=jsr]I would but that song violates both the 60Hz and 32kB limits, unfortunately.[/quote]
Ohhh of course, silly me. Diregard me.. :\
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Follow me on [url=https://twitter.com/jrlepage2a03]Twitter.
I record (some) NSFs on hardware. Feel free to [url=http://www.famitracker.com/forum/posts.php?id=3633]request a hardware render.
I'd be really interested to hear danooct's and Flashygoodness's [url=http://www.youtube.com/watch?annotation_id=annotation_951222&feature=iv&src_vid=zth4nf05jS4&v=Z3UCpg1iMxA]Want you Gone cover from Portal 2, but there's only an nsf available for download and nsfimport destroyed most of the FM. So if any of you have an actual ftm of that, it would be great, I'd really like to know what it sounds like on real hardware.
[quote=robro]but anyway, here's an FDS track of mine
[/quote]
Here's the recording: [url=http://famitracker.com/files/fds/robro__unfinished_dc6_entry.flac]robro__unfinished_dc6_entry.flac
[quote=Patashu]I was going to suggest some FDS songs by Blitz Lunar, but both are over 32kb. Sadface.
[/quote]
Haha those was among the first songs I tried.
[quote=za909]but there's only an nsf available for download [/quote]
I actually got plain NSFs working too, but then the space is limited to 24kB. Here it is: [url=http://famitracker.com/files/fds/want_you_gone_fds.flac]want_you_gone_fds.flac