NAME MNEMONIC TYPE EXCEPTIONS CODE Subtract Unnorm- alized (Long) SWR RRF,C S, E,LS 2F
Subtract Unnorm- alized (Long) SW RXF,C A,S, E,LS 6F
Subtract Un norm-
alized (Short) SUR RRF,C S, E,LS 3F
Subtract Unnorm- alized (Short) SU RXF,C A,S, E,LS 7F
Floating-Point Divide (FK)
Division by a floating-point number with zero fraction
is attempted.
The operation is suppressed.
The instruction-length code is 1 or 2.
NAME MNEMONIC TYPE EXCEPTIONS Divide (Long) NDDR RRF S,U,E,FK
Divide (Long) NDD RXF A,S,U,E,FK Divide (Short) NDER RRF S,U,E,FK Divide (Short) NDE RXF A,S,U,E,FK Editing CHAR- EXAM- TRlG- RESULT ACTER NAME AND INE GER DIGIT CHAR- CODE PURPOSE DIGIT STATUS STATUS ACTER 00100000 digit select yes s=1 digit
s=o d not 0 digit s=O d=O fill 00100001 significance yes s=1 digit
start s=O d not 0 digit s=O d=O fill 0010 0010 field no fill
separator
other message no s=1 leave
insertion s=O fill NOTES d Source digit CODE 2D
6D
3D
7D
TRIG­
GER SET S trigger (1: minus sign, digits, or pattern used; 0: plus sign, fill used)
digit
fill
leave
other
A source digit replaces the pattern character.
The fill character replaces the pattern character.
The pattern character remains unchanged.
Any other pattern character.
Timer 111111111 23 24 25 26 27 28 29 30 31
System Control Panel
Operator Controls NAME
Emergency Pull Power On Power Off Interrupt
Wait
Manual
System
Test
Load
Load Unit Load Prefix Select>O >0 Multisystem feature
IMPLEMENTATION Pull switeh
Key, backlighted
Key
Key
Light
Light
Light
Light
Light
Three rotary switches
Key
Key switch Intervention Contlrols NAME
System Reset
Stop
Rate
Start
Storage Select
Address
Data Store Display Set IC
Address Compare
Alternate >0 Multisystem feature IMPLEMENTATION Key
Key
Rotary switch
Key
Rotary or key switch
Rotary or key switches
Rotary or key switches
Key
Key
Key
Rotary or key switches
Light
States of Wait and Manual lights SYSTEM MANUAL WAIT CPU I/O LIGHT LIGHT LIGHT STATE STATE off off off Not allowed when power is on
off off on Waiting Not operating
off on off Stopped Not operating
off on on Stopped, Not operating
waiting
on off off Running Undetermined
on off on Waiting Operating
on on off Stopped Operating
on on on Stopped, Operating
waiting
Input/Output ()perations Input / Output Address Assignment ADDRESS 000 xxx x xxx x 001 xxxx xxxx 010 xxxx xxxx 011 xxxx xxxx 100 xxx x xxxx 101 xxxx xxxx 110 xxxx xxxx
III xxxx xxxx ASSIGNMENT Devices on the multiplexor channel
Devices on selector channel 1
Devices on selector channel 2
Devices on selector channel 3
Dcvices on selector channel 4
Devices on selector channel 5
Devices on selector channel 6
Invalid
Address on Multiplexor Channel ADDRESS 00000000 to 0111 1111 1000 xxxx 1001 xxxx 1010 xxxx 1011 xxxx 1100 xxxx 1101 xxxx 1110 xxxx
1111 xxxx Input / Output States I/O Device
Available
Working
Not operational
Interruption pending ASSIGNMENT Devices that do not share a sub channel
Devices on shared subehannel 0 Devices on shared subehannel 1
Devices on shared sub channel 2
Devices on shared sub channel 3
Dcvices on shared subchannel 4
Devices on shared subehanncl 5
Devices on shared subehannel 6
Devices on shared subehannel 7
A None of the following statcs
W Device executing an operation
N Device Bot operational
I Interruption condition pending in device Appendix G 153
Channel
A None of the following states Available
Interruption pending I Interruption immediately available
from channel
Working
Not operational
W Channel operating in burst mode
N Channel not operational
A None of the following states
Subchannel
Available
Interruption pending I Information for CSW available in
subchannel
Working
Not operational
W Subchannel executing an operation
N Subchannel not operational Condition Code Setting for Input / Output Instructions CONDITIONS Available
Interruption pend. in device
Device working
Device not operational
Interruption pend. in subchannel
For the addressed device
For another device Subchannel working Subchannd not operational
Interruption pend. in channel Channel working Channel not operational
Error
AAA
AAI
AAW
AAN
AIX
AWX
ANX
IXX
WXX
NXX CONDITION CODE FOR START TEST HALT TEST I/O I/O I/O CHAN 0,1 0 0 0 P' 1"'" 0 0 1"'" 1"'" 0 0 3 3 0 0 2 1"'" 0 0 2 2 0 0 2 2 1"'" 0 3 3 3 0 see note below 1
2 2 2 2
3 3 3 3 Channel equipment error 1"'" 1 \) 1 "'" Channel programming error 1 "'" Device error 1 "'" 1 "'" NOTE: For the purpose of executing START I/O, TEST I/O, and HALT I/O, a channel containing a pending interruption
condition appears the same as an available channel, and the
condition codes for the IXX state arc the same as for the AXX
state, where the X's represent the states of the subchannel and
the device. As an example, the condition code for the IAA
state is the same as for the AAA state. ""'The CS\" or its status portion is stored at location 64 during
execution of the instruction.
-The condition cannot he identified during execution of the in­
struction. Flag Setting for Chaining Operations
CD ACTION
o
CC
o No chaining. The current CCW is the last.
The operation is terminated
o
1
1
1
o
1 Command chaining
Data chaining
Data chaining Content of Channel Status Word Address Field CONDITION Channel control check Status stored by START I/O Status stored by HALT I/O Invalid CCW address spec. in TIC Invalid CCW address in TIC Invalid CGW address
generated
Invalid command code
Invalid count
Invalid data address
154 CONTENT U npredicta ble
Unchanged Unchanged Address of TIC + 8
Address of TIC + 8
Address of first invalid CCW +8
Address of invalid CCW + 8
Address of invalid CCW + 8
Address of invalid CCW + 8 CONDITION Invalid CCW format
Invalid sequence -2 TIC's Protcction check Chaining check
Termination under count
control
Termination by I/O device
Termination by HALT I/O Suppression of command
chaining due to unit check
or unit exception with de­
vice end or control unit end
Termination on command
chaining by attention, unit
check, or unit exception
Program-controlled interrup-
tion
Interface control check Ch. end after HIO on seI. ch. Control unit end
Dcvice end
Attention
Busy Status modifier CONTENT Address of invalid CCW + 8
Address of second TIC + 8
Address of invalid CCW + 8
Address of last-used CCW + 8
Address of last-used CCW + 8
Address of last-used CCW + 8
Address of last-used CCW + 8
Address of last CCW used in
the completed operation + 8
Address of CCW specifying
the new operation + 8
Address of last-used CCW + 8
Address of last-used CCW + 8 Zero Zero Zero Zero Zero Zero Content of Channel Status Word Count Field CONDITION Channel control check
Status stored by START I/O Status stored by HALT I/O Program check
Protection check Chaining check
Termination under count
control
Termination by I/O device
Termination by HALT I/O Suppression of command chaining duc to unit check
or unit exception with device
end or control unit end
Termination on command
chaining by attention, by
unit check, or unit
exception
Program-controlled inter-
ruption
Interface control check
eh. end after HIO on sel. ch. Control unit end
Devicc end
Attention Busy Status Modifier CONTENT Unpredictable Unchanged Unchanged Unpredictable U npredicta ble Correct Correct Correct Correct Correct. Residual count of last CCW used in the completed
operation. Correct. Original count of CCW specifying the new
operation.
Unpredictable Correct Zero Zero Zero Zero Zero Zero Indication of Busy Condition in Channel Status Word
The table lists the conditions when the busy bit (B)
appears in the csw and when it is accompanied by
the status-modifier bit (8M). Two hyphens (--) incli­
cate that the busy bit is off; an asterisk (#) indicates
that csw status is not stored or an I/O interruption
cannot occur; the (cl) indicates that the interruption
condition is cleared and the status appears in the csw.
The abbreviation DE stands for device end, and cu
stands for control unit.
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