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Description. The indicator specified by
Qs
and
Q!)
of the instruction is interrogated and a branch to the
P address occurs if the indicator is on. Indicators are
always in one of two conditions, on or off. The status
of each indicator is dependent on process and/or con-
trol system conditions at the time of interrogation. The
Q7'
Q10'
and
Qll
posi tions of the instruction are not
used.
Execution Time.
If the branch occurs (indicator
on) , T
=
200. If the branch does not occur, T
=
160.
NOTE:
If the 1710 indicators - 18,19,21-23,27-29,40-45,
and 48-59 - are tested, the execution times for this in-
struction are changed to 290 if the branch occurs, and
to 150 if the branch does not occur.
Information concerning 1620 and 1710 indicators
IS
given in Table 8 and further explained, as follows.
Table 8. 1710 Indicators
Machine
1620
1711
Code
Nome
light
Turned on by
01-04
1620 Program Switches 1-4
No
Operator (Program Switch on)
06
Reoo Check
Yes
I/O input error
07
Write Check
Yes
I/o
output error
08
MAR Check'
Yes
Parity error or involid address in MAR
09
II
12
13
14
15
16
17
26
*18
*19
21
22
23
27
28
29
40
41
43
Lost Co,d (1622 Co,d Reod)
High-Positive (H/P)
Eq
uo
I-Ze<e (E/Z)
HP
0'
E/Z
Overflow Check
Exponent Check
MBR-E Check
MBR-O Check
Mask
Yes
lost card data transfer to Core Storage
Yes
Arithmetic result positive and greater than zero
Yes
Arithmetic result of zero
No
Indicator II or 12
Yes
Arithmetic check
Yes
Exponent Overflow or Underflow
Yes
Parity error in MBR-E
Yes
Parity error in MBR-O
Yes
Mask instruction
Operator Entry
Yes
Operator Entry key depression
Any Check (1710)
No
IndicatOf 06,07,
OS,
16, 17,21,22,23
0'
39 on
TAS Check
Yes
Parity error or invalid Address in TAS
Function Register Check
Yes
Invalid Q7 digit
Analog Output Check
Yes
Multiplexing re'lay foiling to unlatch
CE Inte'wpt
No
CE Switch On (CE Ponel behind 1711 Cove,,)
Analog Output Setup
No
Start of Analog Output cycle
Multiplexer Busy
Yes
Instruction Using 1712 Multiplexer
Multiplex Complete
No
Completion of Multiplexing (Initiates Interrupt)
Analog Output Setup Interrupt
No
Start of Analog Output cycle
One Minute Interrupt
No
Advance of RTC hundreds-<>f-hour wheel
44
One Hour Interrupt
No
Advance of RTC hour wheel
48-59
External Interrupts
70-89
Process Branch
45
Any SIOC Interrupt
6040
6041
6042
6043
6044
6045
6046
6070
through
6089
Output Record Mark
EOM (End of Message)
Mode Shift
SIOC Output Error
Data Ready
Alert
Sloe Not Busy
Unit Respor.se
No
Process di sturbonces
No
Process conditions (closed contact)
No
A SIOC Not Busy (6046) and ony one of
three conditior6:
I.
A unit Response (6070-6089)
2. SIOC Output E",,, (6043)
3.
Data Ready (6044)
No
RecOfd Mo,k in 10DR
(I/o
Data Registe,)
No
• control code in IOOR during write operation
No
2 control code in IODR during write operation
No
Error detected by output unit
No
Character waiting in IODR following a SliC Instruction
No
Indicat()( 6040,6041,6042,6043, or 6044 on
No
SIOC available for instruction or interrupt
No
sloe
I/O unit ready to transmit or receive date
Program Switches (01-04). The status of these four
indicators is determined by the on/off conditions of
their respective Program switches on the 1620 Console.
Read and Write Check (06 and 07). The Rd/Wr
Check indicators are turned on when erroneous data is
transferred to or from an I/O device. Indicator 19 is
on when these indicators are on.
MAR Check (08). When a parity error or invalid ad-
dress occurs in
MAR
and the Parity Check switch on the
1620 console is set to
PROGRAM)
the
MAR
Check indicator
is turned on. Indicator 19 is on when this indicator
is on.
Last Card (09). This indicator is turned on whenever
the data from the last card is correctly transferred from
1622 input buffer storage to core storage.
Arithmetic
(II)
12) 13) and 14). The arithmetic indi-
cators - 11, 12, and 14 - are explained under
ARITH-
Turned off
by
Operator (Program Swi tch off)
BI, BNI Of 1620 Reset key
BI, BNIOf 1620 Reset key
BI, BNIOf 1620 Reset key
BI, BNI Of 1620 Reset key
Reset key
Reset key
Indicators 11 and 12 Off
BI, BNI Of 1620 Reset key
BI, BNI Of 1620 Reset key
BI, BNI '" 1620 Reset key
BI, BNI '" 1620 Reset key
Unmask Instruction
BI, BNI, 17110' 1620 Resel keys
Indicoto" 06,07, 18, 16, 17,21,22,23,36,37 and 38 off
BI, BNI, 1711
0'
1620 Reset keys
BI, BNI, 17110' 1620 Reset keys
81, BNI, 1711 or 1620 Reset keys
BI
m
BNI
Slew or Trim instructions, or end of setup time (.7 seconds)
Multiplex Complete orl711 or 1620 Reset Keys
BI, BNI or Power-On Reset
BI, BNI or Power-On Reset
BI, BNI or Power-On Reset
BI, BNI or Power-On Reset
BI", BNI
Process Conditions (open contact)
BI, BNI, EOM (End-of-Record Mark) or Power-On Reset
BI, BNI Of 1710 Reset
+
BI, BNI
0'
1710 R",et
+
BI, BNlo, 1710 Reset
+
BI, BNI or Power-On Reset
BI, BNI or Power-On Reset
Indicators 6040, 6042, 6043, and 6044 off
Sloe Busy
Unit not ready or EOM
Turns on
Initiates
Indicator
Interrupt
19
19
19
13
13
19
19
19
19
19
6045
6045
6045
6045,45
6045,45
45
Special Feature Prerequisite
Automatic Floating Point
Basic Interrupt
Basic Interrupt
Basic Interrupt
Random Addressing
Analog Output
Basic Interrupt
Analog Output
Input/Output Inte"upt
Timed Interrupt
Timed Interrupt
Timed Interrupt
External Interrupt
Process Bronch Indicator
Input/Output Interrupt
SIOC
SIOC
Sloe
Sloe
Sloe
SIOC
Sloe
Sloe
36
37
38
Add,." Check
WLR/RBC
Yes
No sector address in Disk Storage to match address in OR-l
Bi, BNI or 1620 Reset
39
39
39
1311 Disk Storage Drive
1311 Disk Storage Drive
1311 Disk Storage Drive
Yes
Wrong length Record or Read Back Check
BI, BNI or 1620 Reset
Cylinder Overflow
Yes
Operation through last sector of cylinder
BI, BNI or 1620 Reset
1311
39
42
Any Disk Check
Seek Complete
without sector count decrementation to 000
No
Indicator 36, 37 or 38 on
No
End of seek operation
*
Standard feature of the system. The interrupt function of this indicat()( is available only with the Basic Interrupt special feature
"'*
Included on Basic 1710 System.
t
171
J
Reset is caused by pressing 1711 Reset on by a Power-on reset
Indicators 36, 37 and 38 off
BI, BNI or Power-On Reset
19
1311 Disk Storage Drive
Input/Output Interrupt
51
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