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Posted By

Epy
on 2014-08-16
08:46:39
 Re: SD2IEC SID Player

I would like to show a clear view about PSID files. These files have two main parts, first part is the header the other is the remaining happy. The remaining part contains everything for the music: music score, instruments, player code, etc. As you can see the file contains the player code itself, that's why we can create easily PSID music player, we have to know nothing about music score, instruments and any other things with music. The header contains three important addresses: load address, init address, play address. The 'load address' says where we have to copy the PSID file without header, we have to call the 'init address' before playing music for initialization (with start song number if it has more than one song inside), and we have to call the play address for playing music 50 times per second (it depends on the SID file type). So I think the PRG extension is proper extension for SID file because it contains the player code.



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