HP 262SA - Page 171

-3
Amount of RAM memory.
Status
-4 Interface capabilities.
The terminal responds with a string of bytes. The first byte indicates the number of status
bytes in the response (this byte does not include itself in the count). The following byte(s)
contain the requested data (figures 8-5 through 8-9).
If the tt
x
"
parameter is less than -4 (-5, -6, etc.), a single byte, the tt@" character (01000000), is
returned, indicating 0 status bytes. If tt
x
" is
greater than 1 and the terminal contains graph-
ics, then graphics status information is returned. If the terminal does not contain graphics
and tt
x
" is
an unsigned or positive number, the terminal returns its identity (2620A).
COMPUTER
TERMINAL
Et: *s -1 A DC1
~
Byte 0
BVlE
ASCII
BINARY
STATUS
o
2
B
0/0
01 ,000010,
'L-----String length (no. of bytes) = 2
001 00101 --- Simple edit checks incorporated
El
l Extended edit checks not incorporated
. . Modified data tags incorporated
Forms cache not incorporated
(Not used)
001 00001--- Security enchancement supported
L-....I
1
r Color not incorporated
1-. ----(Not used)
Figure 8-5. Terminal Capabilities (Alphanumeric-Typical) Status Example
8-11