Commodore 1581 - Page 114

WRTSDDV
$90
WRTVER.DV
SEEKHD_DV
SEEKPHD_DV
RESTOREJW
JUMPC_DV
EXBUF_DV
RESET_DV
MOTONDV
MOTOFF_DV
MOTONI DV
MOTOFFI DV
SEEKJDV
FORMAT_DV
DISKINJDV
LEDACTON DV
LEDACTOFF DV
ERRLEDON DV
ERRLEDOFF DV
SIDEDV
SAO
$B0
$B8
$C0
$D0
$E0
$82
$84
$86
$88
$8A
$8C
$8E
$92
$94
$96
$98
$9A
$9C
Writes the job queue's buffer data to a particu
lar logical track, sector. If the same track is
already in the track cache, then this involves
only transferring the job queue buffer data to
the track cache buffer. If a different track's data
is in the track cache, then it must first be
dumped to the disk (only if it was modified),
the desired track read into the track cache buff
er, and finally the job queue buffer's data trans
ferred to the track cache.
Verifies the track cache buffer's data against the
specified logical track's data.
Logs in a disk by reading information from the
first header encountered on the disk into RAM
so that it can be used by the DOS. The track
cache buffer is not updated.
Seeks to a particular logical track, sector. The
track cache is not updated.
Restores the read/write head to track 0
('bump').
Executes the code in the corresponding job
queue buffer.
Executes the code in the corresponding job
queue buffer after the motor is up to speed and
the head is on track.
Resets the disk controller and associated varia
bles.
Turns on the spindle motor (overlays a $01 in
the Job Queue after the spin-up sequence is
complete).
Turns the spindle motor off after the spin-
down sequence is complete.
Turns the spindle motor on immediately.
Turns the spindle motor off immediately.
Seeks to a particular physical track (cylinder).
The current physical track position should be
put in the track parameter of HDRS.
Formats one physical track (one half of a cylin
der). The head must be placed physically over
the proper cylinder, and the head electronics
must be selected for the side desired.
Determines if there is a disk inserted in the
drive.
Turns on the activity LED.
Turns off the activity LED.
Enables error LED blinking.
Disables error LED blinking.
Sets up the side select electronics to the value
specified (in SIDS). "*
105