Honeywell 6000 Series Reference Manual page 30

WIUTE ASCII
This instruction is the same as the Write instruction except that it inciicates the ASCII
mode.
WRITE AND COMPARE
This instruction verifies the writing of data at the device.
READ NONSTANDARD SIZE SECTOR
This instruction is used to read all the fields on a sector of nonstandard size. The
track forInat must be the saIne as for the
DSUI90/DSU190~.
format.
READ TRACK HEADER
This instruction transfers the home address and the record zero (RO) count and data
fields of the required track to the EUS. The format of the data sent to the EUS is shown in
Figure 2-12.
o
WORD 1
WORD 2
o
WORD 3
0
3 4
WORD 4
I
HBZb
I
0
WORD 5
DATA
a
Track Indicator
b
Must be zero
7 8
FLAG
7 8
DATA
7 8
HOME ADDRESS
15 16
C"iLINDER
NUMBER
HEAD
NUMBER
RO COUNT FIELD
11
12 19 20
CYLINDER
NUMBER
RO COUNT FIELD
15 16 17 18
RECORD
NUMBER
RO DATA FIELD
11 12 19 20
DATA
RO DATA FIELD
15 16
DATA DATA
23 24
CYLINDER
NUMBER
23 24
DATA
23
~4
Figure Z-lZ,,! Track Header Format
Z-14
HEAD
NUMBER
27 28
b
MHZ
27 28
DATA
31 32
35
35
HEAD
NUMBER
31 32 35
35
DATA
31 32 35
0000
I
DB37