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Status
PRIMARY STATUS BYTES (cont'd)
\.
BYTE 4
BYTES
TRANSFER PENDING FLAGS
Cursor Sense Pending
1
= yes
o
= no
Function Key Pending
1 = yes
1 = no
- - - - - ENTER Key Pending
1
= yes
o
= no
~---
Secondary Status Pending
1
yes
o
= no
ERROR FLAGS
Data Comm
1 = parity or buffer
overflow error
o
= no error
Self Test
1
=
no error
o
=
error
' - - - - - Device Error
1
error
o
= no error
BYTE 6
DEVICE TRANSFER PENDING FLAGS
Device Status Pending
1 = yes
o
= no
Device Operation Status
Pending
1
yes
o
= no
Figure 8-2.
Terminal Primary Status Bytes (Continued)
Secondary Terminal Status
You request the second set of terminal status bytes (bytes
7-13)
by issuing the following
escape sequence:
Ec "'-
The terminal responds with an
Ec
I,
and seven status bytes followed by a terminator. A
typical secondary terminal status request and response is illustrated in figure 8-3. The
example assumes that the DCl handshake is being used and that the appropriate terminator
is a
<CR>.
Figure 8-4 illustrates the function of each bit in each byte.
8-7
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