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AL = function 00h save block of memory as file 01h update directory entry for existing file 02h set load address for existing file 03h set execution address for existing file 04h set attributes for existing file 05h read directory 06h delete file FFh load file DS:BX -> control block (see #03201)
Return:
FLAGS destroyed AL = file type 00h not found 01h file found 02h directory found FFh protected file
See Also: INT 40"Acorn" - INT 41"Acorn" - INT 44"Acorn" -
Format of BBC Master control block: Offset Size Description (Table 03201) 00h WORD address of CR-terminated filename 02h DWORD load address of file 06h DWORD execution address of file 0Ah DWORD start address of data to save 0Eh DWORD end address of data to save, or file attributes file attributes in low byte (see #03202) other three bytes are filing-system specific file attributes
Bitfields for BBC Master file attributes: Bit(s) Description (Table 03202) 0 no owner read access 1 no owner write access 2 not executable by owner 3 not deletable by owner 4 no public read access 5 no public write access 6 not executable with public access 7 not deletable with public access
Category: Other Operating Systems - Int 45h - A
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