IBM 3742 Reference Manual page 61

Status Indicators
BSCA Mode
Col 38 Col 39
~
Communications
Transmit
Transmit-Transparent
C
T
P
T
T
Receive R
Transmit/Receive B T
Transmit-Transparent/ Receive D T
Mode
~
t
Transmission Complete
~
Transmission Incomplete
C
C
C
J
J
J
Reception Complete - - - - - - - - - - - - -.....
Reception Incomplete - - - - - - - - - - - - - - - - - '
Note: During BSC operations, line 6 of the CRT displays diagnostic information
that is used by the Customer Engineer during trouble calls.
Figure 27. Status I ndicators on Status Line of CRT Display During BSCA Operations
Transmit/Receive
On Disk 1
On Disk 2
Disk Data Set Label
Transmit . Receive Transmitting Receiving
Transmitting Receiving
HDR1 Label:
Will Will Will Will not
Will transmit if Will receive
-
Must have a 1 in position 4 of label transmit
receive transmit receive
continuation after last
- Must have valid extents and record length
because
from previous transmitted
-
Must be accessible
it was disk
data set
-
Must not be deleted
trans-
-
Must not be bypassed
mitted
Bypassed Label:
Will not Will Will not Will Will not
Will
-
Must have a 1 in position 4 of label transmit
receive transmit receive transmit
receive
-
Must be accessible
after last
- Must not be deleted trans- .
-
Must have a "B" in column 41
mitted
data set
Deleted/Non HDR1 Label:
Will not Will not
Will not Will not Will not Will not
-
The label is deleted or does not have transmit receive transmit receive
trans·mit receive
a 1 in position 4
Figure 28. BSCA Modes
Communications 55