Specifications

Status
Bits
11=1
15=1
Status
Character
ready
Terminal
connected
Description
The
character ready status sets
when the holding register in the
receive section contains a valid
data character ready for transfer
to the communication multi-
plexer.
The input/output
terminal is con-
nected to the communications
adapter (set by the driver).
361-4 Communication Adapter (Odd Channel)
Status
Bits
0=1
~=1
3=1
6=1
7=1
8=1
9=1
10=1
11=1
Status
Test mode
select
Da ta term inal
ready
Carrier on
Description
The
test mode select status indi-
cates the communication adapter
is in test mode.
The communication adapter is
ready
to communicate with the
data set.
The data carrier is being re-
ceived from the data set.
Data set ready The data set is ready to operate.
This bit is also placed in posi-
tion
15 of the even channel
status by the driver.
Reverse The data set is receiving the
channel
reverse channel signal from the
receive remote receiving station.
Ring indicator The data set is receiving an
incoming call from a
remote
station.
Parity error A character parity error has
been received.
Function
request
Status ready
The control channel is able
to
receive function commands from
the computer.
This
status can indicate:
The
carrier on has changed
state.
The reverse channel receive
was received.
A
parity error was received.
The
status request was re-
ceived.
364-4 Communications Multiplexer
Status
Bits
3=1
Status
Clock status
96769450 B
Description
The clock
status indicates the
interrupt clock has completed a
cycle since
the last status check.
Status
Bits
Status
7=1 PROTECT
switch status
Pseudo Tape
Status
Bits
0=1
1=1
Status
Ready
Busy
2 Not used
3=1
Data
4=1 End-of-
operation
5=1 Alarm
6~ )
Not used
9=1
End-of -tape
10=1
Loadpoint
11=1 File mark
12) Not used
13
14=1 Mode
15=1 Write enable
COSY Driver
Description
Indicates
the PROTECT switch is
in the protected position.
Description
Always
set
Always set
Set on completion of read or
write
Last existing record
on the file
has been accessed.
Internal pointers
are pointing to
the beginning of the file.
A pseudo file mark has been
sensed.
o for read, 1 for write
The file may be written on.
The
status bits in the COSY driver physical device table and
the status bits for the device used by the COSY driver are
the same.
Pseudo Disk
The
status bits in the pseudo disk physical device table are
defined similarly to the status bits for a real disk.
Magnetic Tape Simulator
The
status bits in the magnetic tape simulator physical
device table
are defined similarly to the status bits for a
real magnetic tape transport.
6-31 I