OSWORD &70
OSWORD &70 (112) - Read master sequence number and status byte ADFS
On exit: XY?0=Master Sequence Number XY?1=status byte: b7=Tube present, b6=Tube claimed by ADFS, b5=hard drive controller present, b4=n/u, b3=n/u, b2=*OPT1 flag, b1=Bad Free Space Map, b0=IRQ pending.
See Also
Jgharston 14:03, 26 May 2009 (UTC)