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Alarm/Clear
All error conditions displayed on the optional
console are "OR'ed" in the arithmetic unit and a
single line is sent into this error indicator, a back-
lighted pushbutton. Therefore,
if
the optional con-
sole is included in a system and one of the error
indicators is turned ON, this error indicator is
turned on too. The indicator and error condition
if
.
'
applicable, can be cleared by depressing the switch.
J4 •
~JO
The contents of the J-counter are continuously
displayed on the five J-counter indicators.
Memory Protect
The memory protect indicator comes on when a
memory protect violation is encountered. The next
~ns~ruction
is executed from address
20s.
This
md1cator may be cleared when an SPB is executed
that is in locations
203
or
24
8 .
I
=
Instr
The II INSTR indicator comes on at the com-
pletion of the multiply or divide or TIM/TOM oper-
ation.
It
is cleared during the execution of the next
instruction. This indicator, when on, also implies
that I-register (which normally contains the next
instruction) does not contain the next instruction.
Ovfl
The overflow indicator comes on when an arith-
metic overflow occurs. The OVFL is cleared by
executing the JNO instruction, or the LPR if OVFL
had been stored in its off condition.
Pai
The permit automatic interrupt indicator comes
on when the PAI instruction is executed and indicates
that the "inhibitable" interrupts are allowed.
Per Buf
The peripheral buffer indicator comes on when
either a parity error or a deadman error has
occurred on one of the devices attached to the
peripheral buffer.
It
is cleared by depressing the
alarm/ clear button.
Cab Temp
The cabinet temperature indicator comes on
when the cabinet temperature reaches its first pre-
set limit. A shut down sequence occurs when:
(1)
The cabinet temperature reaches the second pre-
set limit; (2) Either limit is reached and a stall
alarm occurs. An external signal is available for
system use.
Core Prty
The memory parity indicator comes on when a
memory parity error occurs. Depressing the
alarm/ clear button turns off the indicator.
Seq. State #1, 2, 3, 4, S
The five sequence states of the computer are
displayed via the sequence state indicators. Se-
quence state
1
is displayed when the computer is
halted and everything is normal.
Stall
The stall indicator comes on when the stall
alarm timer is allowed to time out.
It
is turned off
by depressing the alarm/clear button.
Test (TSTF)
The test indicator comes on when the Test Flip-
Flop is set by instructions such as GEN 1, LPR or
TXH. The test indicator is cleared by program de-
pending on the instruction being executed, similar to
its setting.
CONSOLE SWITCHES
API L/O
The API lockout switch is a latching-type. In the
on position, it disables all interrupts from the API
module. This function is enabled only in the auto
and manual modes.
Auto/Man
The auto/manual switch is a latching-type. When
locked, in the on position the light glows and the com-
puter is in the automatic mode. When unlocked, the
computer is in the manual mode.
This switch is dis-
abled in the console off mode. When switched from
manual to auto, AU timing starts.
Clear
The Clear pushbutton is a momentary zeroes
type. When in the manual mode, Clear the entire
register selected by the A or B switches. Clear is
disabled in the auto mode.
19
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