Specifications
1729-3
Card
Reader/Controller
Status
Bits
0=1
1=1
2=1
3=1
4=1
5=1
6=1
7=1
Status
Ready
Busy
Interrupt
Data
End-of-
operation
Alarm
Lost
data
Protected
8=0
Not used
9=1
10=1
11=1
6-12
Not ready
End-of-file
switch
End-of-file
card
Description
The card reader is operational.
The
card
reader is busy.
Indicates interrupt response gen-
erated
by
card reader. Other
status
bits must be monitored
to
determine the cause of the
inter-
rupt.
Indicates data transfer may
occur. Reader data: The
data
hold register contains informa-
tion ready for transfer
to
the
computer.
Indicates the card reader com-
pleted operation
Indicates the presence
of
an
alarm condition
Indicates the
data
was not
trans-
ferred out of the holding register
before the next column being
read appeared. The
sta
~us
drops
when a clear
(0=1)
is
sent
to
the
controller
NOTE
When
lost
data
occurs,
no further transfers
occur from
that
card,
and an end-of-operation
status
is generated.
Indicates the
PROTECT switch
on
the
card reader is in the
PROTECT position.
When
in this
position, the card reader only
accepts
instructions with a 1 on
the
program
protect
line. All
other
instructions
are
rejected.
A
protected
instru.ction is used
with
either
a
protected
or
unprotected card reader.
Always inverse of
bit
0
Indicates the END-OF-FILE
switch is on
Indicates an end-of-file card has
been read. The bit is
set
by the
driver.
1725-1
Card
Punch
Status
Bits
0=1
1=1
2=1
3=1
4=1
5=1
Status
Ready
Busy
Interrupt
Data
End-of-
operation
Alarm
6 Not used
7=1
Protected
8=1
Error
Description
The card punch
is
on-line and
operational.
A card is in progress
One of the interrupt responses
was generated
by
the controller.
Other bits must be monitored to
determine the condition causing
the
interrupt.
The card punch is ready to
receive
data
from the computer.
The referred station has com-
pleted an operation.
Indicates the presence of one of
the following abnormal
condi·
tions:
The ready signal becomes
not active while the con-
troller is busy
The punch is ready but an
error
or
lost
data
occurred
The punch is inhibited when
trying
to
punch.
Indicates the controller is in the
protect
state
Preread or a punch error
occurred.
1731/601
Magnetic
Tape
Controller
Status
Bits
0=1
1=1
Status
Ready
Busy
2=1
Interrupt
3=1
4=1
Data
End-of-
operation
Description
The
tape
unit is connected and
ready
The equipment is busy.
Read/write
data
transfer
96769450 A