OSWORD &7C

OSWORD &7C (124) - Multiple-track single density FDC command HDFS

On entry:
 XY?0   =drive number
 XY!1   =address
 XY+5..6=start sector
 XY+7..8=number of sectors to transfer
 XY?9   =8271 FDC command as for OSWORD &7F (127)
If the drive number is &FF the previously-used drive is used.

See Also

• http://mdfs.net/Docs/Comp/BBC/Oswords

Jgharston 13:18, 26 May 2009 (UTC)