Posted: 10/15/2004 9:06 AM
(Edited: 10/17/2004 1:20 AM)
Post subject: "Unknown format type" error when opening FDS'
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gunbarrel
Joined: 10/14/2004
Posts: 3
See topic. I've played around with the INI file and I have the BIOS rom, but still it just won't load any FDS games. Instead I get the error message in the topic. They are verified FDS games and they run properly in FCE-U. Any thoughts?
Posted: 10/15/2004 9:12 AM
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Quietust
He/Him
Emulator Coder, Former player
Joined: 7/14/2004
Posts: 250
Apparently, there are two types of .FDS files. One type is exactly 65000*N bytes long and has no special header on the front. The other type is 65000*N+16 bytes long and has a short header identifying the file and indicating how many disk sides it has. Famtasia likely only supports the latter format.
* Quietust, QMT Productions P.S. If you don't get this note, let me know and I'll write you another
Posted: 10/15/2004 2:35 PM
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gunbarrel
Joined: 10/14/2004
Posts: 3
Yep, you were right. Checked the header in a hex editor and indeed, it was missing the proper header. Found a tool called FDS Spray that fixed this among other things (adding a header if missing and so on). So if anyone else should encounter the same problem, this is the simple solution. And thank you for the help Quietust!