IBM 2702 Information Manual page 47

Start/Stop and Binary Synchronous Terminal Controls
IBM Terminal Control-Type I
IBM Terminal Control-iype
II
Telegraph Terminal Control-Type II Telegraph Terminal Control-Type I
(1050, 60, and 70.2740,
( 1030.) (TTY 33 and 35.)
(TTY 28 and 2712 M2.)
and 2741 with Interrupt.)
Write Wrong bus-aut parity during service cycle.
Dial
Wrap
Break
Any Wrong bus-out parity during Command-Out.
Command
Figure 2-13. Sense Bit 2, Bus-Out Parity Check (S/S and BSC)
Start/Stop Termi no I Controls
IBM Terminal Control-Type I
IBM Terminal Control-Type II Telegraph Terminal Control-Type II Telegraph Terminal Control-Type I
(1050, 60, and 70. 2740
(1030)
(TTY 33 and 35)
TTY 28 and 2712 M2)
and 2741 with Interrupt)
All An active command is being executed by the 2702/2703 when a new command
Commands is issued
b~
the channel. A base check or core parity check has occurred(2703).
Write
Transfer check between the serialize field and the Transmit Data Latch.
Poll
I
Wrap
Transfer check between the serialize field and the Transmit Data Latch.
Break
I
Enable
Enable latch failed to turn on.
Disable
Enable latch failed to turn off.
Dial Call Request latch failed to turn on or off.
Figure 2-14. Sense Bit 3, Equipment Check (Part 1, SIS)
Binary Synchronous Terminal Control
All
An active command is being executed by the 2703 when a new command is issued by the channel. A base check,
Commands or parity check has occurred.
Enable Enable latch failed to turn on.
Disable
Enable latch failed to turn off
Dial
Call Request latch fai led to turn an or off.
Figure 2-14. Sense Bit 3, Equipment Check (Part 2, BSC)
Operations 2-31