Terminal Status; Primary Terminal Status; Primary Terminal Status Example - HP 2624 Manual

Status
PRIMARY TERMINAL STATUS
The terminal responds by sending back the following five-
character string:
2624A
You
req~est.
the first set .of terminal status bytes (bytes (
0-6) by Issumg the followmg escape sequence: .
TERMINAL STATUS
Terminal status is made up of 14 status bytes (bytes 0-13)
containing information such as display memory size,
switch settings, configuration strap settings, and terminal
errors. These 14 status bytes are displayed below the self-
test screen pattern when the
"TERMINAL TEST" ( . . )
key
(in the
"modes"
or
"servi ce keys"
set of function keys) is
pressed. There are two terminal status requests: primary
and secondary. Each returns a set of 7 status bytes. The
primary and secondary status bytes are described in the
next few pages.
The terminal responds with an
<ESC>\
and seven status
bytes followed by a terminator. A typical primary terminal
status request and response is illustrated in figure 8-1. The
example assumes that the DC
1
handshake is being used and
that the appropriate terminator is a
<CR>.
BYTE
0
2
3
4
5
6
8-2
The primary status bytes are shown on page 8-3.
COMPUTER
TERMINAL
ESC
1\
DC1
•
ESC \ 7007460 CR
• t ,
Byte 0 Byte 6
ASCII BINARY
STATUS
7
0
0
7
4
6
o
1111
I I ! I
;;.15K bytes of display memory
0000-- Function key transmission disabled
II'
Space overwrite latch disabled
Cursor wrap around
Strapped for line
0000
I'
Disable handshake
Inhibit DC2 disabled
1111 - - Upper case only
I' '
Block mode
Auto line feed
Terminal sends secondary status
0100
,
ENTER key has been pressed
0110-- No data comm errors
I
I'
Last Self Test ok
No loader checksum errors
..... - - - - No device errors
0000
Configuration
Straps A-H
'w' _ _ _ No device status or device operation status pending
Figure 8-1. Primary Terminal Status Example
(
(