Main Index Routine Index Memory Index Previous Page Next Page $77-$78: Start track & sector ID of file to find & read (encrypted) $79: Number of parameters to copy in $0587 routine (negative, usually $FD=-3) Initial value from Directory entry is not used. $7A: Offset pointer for file transfer parameters. Initial value for very first data sector is obtained from Directory entry. $7B: File transfer of very first data sector starts in buffer [$7B*$100] (only buffer [$0300] or [$0400]). The 5 above values are obtained from the Track 18 Directory entry of the file to be loaded. [$7A], [$7B] are not encrypted (e.g. take a look at the Directory of a D64 image). RapidLok-Reference: LDA $77,X : $0325 STA $77,X : $07D0 STX $79 : $0387 LDX $79 : $05B9 STX $79 : $05C2 STA $79 : $05FE STA $7A : $05B3 LDY $7A : $05B7 STY $7A : $05C5 LDX $7B : $05A9 Previous Page / Next Page