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Read All Cylinders With All Heads
To read all cylinders
with
all heads use the
following procedure:
10
Set READ/ACCESS/WRI'1'E switch
to
READ.
2. Set REPEAT/SINGLE switch
to REPEM'.
3. Set R/W ONLY/RESET switch to
NEtl'rDL.
4. Select head 00 as described
in
Bead
Selection procedure.
5. Set Mode Select switch to SEQ FWD.
6. Set
INP~
switches for one track seek.
7. Set S'l'ART/S'1'OP switch to START.
Address
will
be
read on track 000
by
head 00,
etc.
When last track is read switch
STAR'l'/S'1'OP switch to S'1'OP.
Repeat test
selectinq next higher order head
and
read all tracks.
Continue until all
heads have read all tracks.
Write Operations
A write operation can be performed in con-
junction with a seek operation or separately.
If performed with a seek operation, the seek
is completed first, then the track is written.
The write 'operation beqins at Index and ends
at the next Index.
The bit pattern loaded
into the PAT'l'ERN display is written on the
track {after a delay of 630
~sec
from the
leading edqe of Index.
Write One Track
'1'0
write one track perform the following
steps:
1. Set READ/ACCESS/WRITE switch to write.
2. Set REPEAT/SINGLE switch to SINGLE.
3. Set R/W ONLY/RESE'l' switch to NEUTRAL.
4. Load bit pattern as follows:
2-14
a. Set Mode Select switch to OPPER.
b. Set INPUT switches (32 through 1) to
upper six bits of bit pattern.
c. Actuate LOAD/SEQ BEADS switch to LOAD
and let switch return to neutral.
Verify that pattern is displayed by
LOWER PATTERN indicators.
d. Set Mode Select switch to LOWER.
e. Set INPUT switches (32 through 1) to
lower six bits or bit pattern.
f. Actuate LOAD/SEQ HEADS swi tah to
LOAD and let switch return to neutral.
Verify that pattern is displayed
by
LONER
P~
indicators.
5. Select desired head as described in
Bead Selection procedure.
6. Access
to
desired track as described
in
Seek Operations.
7.
To
write track aqain, actuate START/STOP
switch.
Repeat START/S'1'OP step for each
write operation.
To
select new head on same track without
accessing perfor.m the follOwing steps:
8. Set R/W ONLY/RESET switch to R/W ONLY.
9. Select desired head as described in
Head Selection procedure.
10. Set START/STOP switch to START.
'1'0
write that track aqain, actuate
ST~/
S'1'OP swi tah.
Repeat STAR'l'/S'l'OP step
tor
each write operation.
To
~ite
continuous with one head without
accessing perform the following steps:
11. Set REPEAT/SINGLE switch to REPEAT.
12. Set S'l'ART/STOP switch to START Track
will be continuously written until
ST~/S'l'OP
switch is set to STOP.
write More Than One Track
To
write more than one track perform the
following steps:
1. Set READ/ACCESS/WRITE switch to write.
2. Set REPEAT/SINGLE switch to REPEAT.
3. Set R/W ONLY/RESET swi-ch to NEUTRAL.
4. Load bit pattern as follows:
a. Set Mode Select switch to UPPER.
b. Set INPUT switches (32 through 1) to
upper six bits of bit pattern.
c. Actuate LOAD/SEQ HEADS switch to LOAD
and let switch return to neutral.
Verify that pattern is displayed by
UPPER PATTERN indicators.
d. Set Mode Select switch to LOWER.
e. Set INPUT switches (32 through 1) to
lower six bits of bit pattern.
83318200
C
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