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comparison
(continued)
time-of-day-clock
4-16
compatibility
1-2
I/O operation
12-5
of BC-mode PSW with System/360
4-3
completion of instruction
5-5
conceptual sequence
5-8
effect on storage-operand accesses
5-11
conclusion of I/O operations
12-40
condition code
5-5
deferred
12-11
for SIOF function
12-22
in CSW
12-47
for I/O operations
12-11
in PSW
4-5, 4-6
settings
C-l
tested by BRANCH ON CONDITION
instruction
7-9
validity bit for
11-10
conditions for interruption
(see
interruption)
CONNECT PAGE (CTP) instruction
10-3
connected state
3-5
connection of storage pages
3-4
connective
(see
logical connective)
consistency (storage operand)
5-11
console device
13-1
control
4-1
as an I/O command
12-37
instructions
10-1
manual
(see
manual operations)
page and page-frame
3-6
register
2-3
description and assignments
4-7
save area for
3-10
validity bit for
11-11
control unit
2-4, 12-2
end (I/O unit status)
12-48
sharing of
12-5
conversion
binary-to-decimal
7 -16
decimal-to-binary
7 -15
floating-point-number
basic example
A-5
instruction-sequence examples
A-31
of program from BC to EC mode
10-11
CONVERT TO BINARY (CVB) instruction
7-15
example
A-12
CONVERT TO DECIMAL (CVD) instruction
7-16
example
A-12
count field
in CCW
12-29
in CSW
12-47
contents of
12-58
counter updating (example)
A-37
counting operations
7 -10
CPU (central processing unit)
2-1
checkpoint
11-2
hangup due to string of interruptions
4-2
identification (lD)
10-12
model number
10-12
registers
2-2
save area for
3-10
retry
11-2
serialization
5-12
state
4-1
no effect on time-of-day clock
4-16
timer
4-19
cxlcmal interruption
6-8
save area for
3-10
CPU
(continued)
validity. bit for
11-11
version code
10-12
CR
(see
control register)
CSW (channel-status word)
12-47
current PSW
4-2, 5-5
stored during interruption
6-1
d
D field of instruction
5-4
damage
external
11-9
mask bit for
11-12
instruction-processing
11-8
interval-timer
11-9
system
11-8
timing-facility
11-9
data
chaining of (I/O)
12-3 2
check (bit in I/O-sense data)
12-38
exception
6-11
format for
decimal instructions
8-1
floating-point instructions
9-2
general instructions
7-2
I/O-sense
12-38
prefetching for output operation
12-30
decimal
comparison
8-5
digit codes
8-1
divide exception
6-11
instructions
8-1
examples
A-25
number representation
8-1
examples
A-4
operand overlap
8-3
overflow
exception
6-11
mask in PSW
4-5, 4-7
rounding and shifting
8-10
sign codes
8-1
decima1-to-binary conversion
7-15
decision making
5-5
DECONFIGURE PAGE (DEP) instruction
10-4
deferred condition code
(see
condition code, deferred)
degradation (machine-check condition)
11-9
mask bit for
11-12
delay, in storing
5-10
delayed (machine-check condition)
destructive overlap
7 -23
detect field (in limited channel logout)
device
(see
1/
0 device)
address
(see
I/O address)
consote
13-1
DIAGNOSE instruction
digit codes (decimal)
digit selector
8-6
direct-access storage
disabling
10-4
8-1
3-1
for interruptions
6-4
of interval timer
4-20
disallowed interruptions
6-4
11-10
12-60
DISCONNECT PAGE (DCTP) instruction
10-5
disconnected state
3-5
displacement
5-4
display (manual controls)
13-2
DIVIDE (D,DR) binary instructions
7-16
example
A-12
Index
X-3
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