Loading files: Difference between revisions
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Revision as of 05:59, 16 April 2011
BIOS calls BIOSF_LOADFILE ($C00552) and BIOSF_LOADFILEX ($C00564) are used to load files from the CD.
The BIOSF_LOADFILE call displays a loading animation, while BIOSF_LOADFILEX (better name ?) doesn't.
Register A0 needs to point to a block indicating:
- The filename, ended by a 0 byte
- The bank number (8bit)
- An optional pad byte to align:
- Destination address (32bit)
The destination memory is automatically chosen according to the file's extension.
Rules:
- SPR files have 1MiB banks. PCM files have 512KiB banks. Other types aren't banked.
- FIX files and PCM files need to have their destination address multiplied by 2.
BIOS RAM adresses for currently loaded sectors, total sectors ?...