Table of Contents
Advertisement
FLT lood
Supervisor Controls
lnitioN FLT Load
KH:WS
Bring
Up
S"'rt 1/0 to 1/0
Ruet IAR
Tum Off Retry Trigger
Tum On lnhtbit IARCaunt Trigger
KH511
,,,....
Start 1/0
~--~Na=<"'End Updat•>
"- Request/
KH~l
1--0
1--0
NOTE l'":::,,_
Channel utes start 1/0 and select
channel lines, and
req~ts
a start
1/0
routine {priority
3
req).
lrol'll-
fen Nquest to position
~ister
G8161, GOl31, GFl21
NOTE 2
7
Priority 3 Request
KE881
Set Unit Addrnl an ALCH
I
OTC
to 1/0
Set Read Op°' Rood
Backwold on ALCH
OTC
to 1/0
Tum
Off
Reod Op or Read
llackwatd
on ALCH
KH551
KH551
KH551
KH551
Na
KH521
KH541
OTC
lo
1/0
OTC
lo
1/0
Idle Cycle
OTC
lo
1/0
Tum Ofr Start 1/0 to 1/0;
Tum On First
Word
FIGURE 25. FLT LOAD VlA TAPE
OTC KE-451
OTC KE-451
OTC
KE-451
OTC
KE-451
OTC
KE-451
Channel Nth unit address in B-reg
(byN O),
hnn•n"'
;t
to
c....,,
(byteO),
resets finish latch, requests CCW-2
routine (priority 2 req)
GBl61, Gflll
Channel sets op into I-reg
(byte
O) and
GP reg 5-7; sets op
reg
fT-om GP 5-7;
sets GP 1-2 to 00 for read, 11 for reod
badcword; sets IC to GP 1-2; sets finish
latch; transfen CCW-2 request into
position register
GB161-171, GClOl-131, GRl31
Chon Step: Cyc Ctr,
Rneh
Finish Latch
GAIJI
G8161
Chan
Steps
Cycle Counter
GAl31
Channel tets CI and C.4 lak:hes,
step cycle
counter,
starts A-clock,
iets
finish
latch, requests unit select,
tronsfen
request to position register
GA131· GBl61 171· GFl51 171 181
Channel
Selech
Tape and Checks
for Zero Status
Condition Code =0 Condition Code
I
0
Chon and unit
status
are in
KE051
C-.-eg, byte 1,
roller 2
If zero
status, channel
takes
in
data
from
tape
and when
C-reg
is full, transfers data to
8-reg
and requestsreadstore routine
GGIOI
Gate SOR
4-1
Turn Off
OTC
to t/0 Tgr.
Turn Off Inhibit IAR
Count into SAR
KH511
4-2
First
Second
or
s.con~
Pair of llllOrds
KHS41 4-3
Fint
KHS41
,,,,,.;Wait
<.:~'
Reod
Store Req
KH51
3~
End UpdaN (Stolus In)
KE-451
Chan
sets
memory
byte counter
reg, st9fl'S
cycle ctr, rnets finid'1 latch
Chon
tends data to
SOR
by
requesting and
executing read stoN routines. The data is
sent to the channel via the service
in--rviu
out
teqUel"IC•
which
takes a
byte
of
data into
the
C-reg
until it is full, then h'Onden data
to
the
1-r.g
f«
tnmltnittal to SOR
by
the
reod store routines. Process
contir'l..te$ until
tape ends
a,_ration by sending status
in.
Chan
1eh
finish latch
Gll61,171
GGlll
Priority R1!4f.Jest
KE881
NOTE: I. T!ie fint and second r'IJmben comnpond to the seqvence stat ond aequence counter,
respectively.
2. Where reference is made
to
a 1elector channel routine,
ton.
microprogram as shown on the
CAS is not
beirg
executed in ROS. Instead,
the
CPU is
simulating
these routines
by
sendi"fill
the
required
number of
DTC'l;
and the
selector channel responds
to
these
DTC
1 1
in tf.e some
manner that
it
responds during a norqt0I microprogrom.
3. This OTC is
held
octive until 4-4 time
to
retain the
chamel
ond unit stoh.tl
durirv
3-3 time.
Status is
displayed
on the left side of CPU roller 2
(ony
position).
4. This OTC is held active
until
-4-2 time ancf
~Ids
the dota
in
tt...
1-Ngister
until
it
is
set into
SOR at 4-1 time. The channel A-clock advances to Al tiJM; the
cycle
counter
is
at step l;
and the
position regis .. r indicates read store.
Chef!. requesh end update when tape
te""inotet record by tending stoM
in.
rhe
request is made ofter oper-
ational in falls follC1111ting the final
staM sequence
GG161
OTC
to
1/0
Idle
Cycle
DTC to
1/0
~
PCI'-...
equest "-.
to
KH521
2-5
2-6
2-7
OTC
KE45 I
OTC
KE451
Chon sets reconf encf latch,
s~pl
eye.le
cwntier ol'\d
rese~
finish
latch
GAl31
8161
GFlll
Chon Sek Finish Latch
GBJ61
Chon Mokes PCI Request
GG181
GBl71
' i f
v ••
PCI Reql;est
KE88 I
End Stotuo Chock
r- --
1
I
I
I
I
PC I E noble to l/O
KH531
Idle Cycle
3-1
NOTE 3
Set OTC
to
1/0 Trigger.
Select Storage
OTC
KE .. 51
KH551
KEIJI
3-2
Holt
oher
load
Auto Reread
..................................
I
I
' .- Backward
'
I
RoodC..,..J
I
I
I
<
Backspace
Off
Trigger
>"=---------~
KH555
On
Tu". On
Backspace
Tgr
Tum On Retry
Trigger
KH555
Tum Off OTC to 1/0
Trigger. Reset IAR
Kl1541
4~
KH551
OTC
ta 1/0
Rehy
Trigger
KH555 4-S
Off
Reset IAR. All counters
Go
tQ ~in
Store Mode
KH541
End of
Sequence
4-5
OTC
KE451
Chon requests
rrpt
routrne,
tronsfen req to pos register
G8171
G
181
Chon
sends
chon
and
unit statvs
to scan bus; deps
cycle
counter,
resets finish latch
GAl31, GBl61, GG171
-
-
--, Scan
Bus Bit 6 - Unit Check
Scan
Bus
Bitl2-0otoCheck
-~
3-3
Chan generates channel reset,
sen finish latch in idle mode
GB161
GGl71
Maintenance Features
(3/71)
43
Advertisement
Table of Contents
