Commodore 1581 - Page 115

BUFMOVE DV
$9E
TRKWRTDV
SPREAD
$A2
SP_WRITE
PSEEK DV
TREAD_DV
TWRTJDV
TPREAD_DV
TPWRTJDV
DETWP_DV
FORMATDK DV
$A6
$A8
$AA
$AC
$B2
$B4
$B6
$F0
Moves data between the job queue buffer and
the track cache buffer. The track parameter in
the job queue denotes the position in the track
cache buffer to transfer to/from. The sector
parameter denotes the following:
Bit 7 : Direction (1 = to track cache
buffer)
Bit 6 : Mark Flag (set/clear the 'track
cache modified' flag)
Bit 5 : Transfer (1 = do the transfer)
Bits 4-0 : # of 256 byte blocks to transfer
With bit 7 set, the corresponding physical track
position in the job queue (HDRS2) must be
updated for the purpose of telling the control
ler what physical track the track cache buffer
belongs to. In addition the side var (SIDS) must
also be updated.
Dumps the track cache buffer to the disk (only
if the track cache modified flag is set).
Reads the specified physical sector directly into
RAM starting at #0 ($0300). It does not use the
track cache buffer. The sector is always read
from the disk regardless of the current con
tents of the track cache.
Writes to the specified physical sector directly.
It does not use the track cache. Data to be
written starts at buffer #0 ($0300).
Seeks to the specified physical track.
Reads logical address without transferring to
the job queue buffer.
Writes,a logical address without transferring
from the job queue buffer.
Reads a physical address without transferring
to the job queue buffer.
Writes a physical address without transferring
from the job queue buffer.
Checks if the disk inserted is write protected.
Returns $00 if disk is not protected, else $08.
Formats the disk with the default physical for
mat.
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