HP 262SA - Secondary Terminal Status

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