6530 Programmer's Guide

Block Mode Operation
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6530 Programmer’s Guide
The GS control sequence is valid in nonprotect submode. However, it
results in simply setting a video attribute at the current buffer address.
No field or data attributes are defined (the data attribute character is
ignored), and the video attribute is not protected. Thus, in nonprotect
submode, the GS control sequence functions exactly the same as the set
video attributes (Esc 6) sequence.
Start Field Extended (Esc [ )
The Esc [ sequence defines a new field just as the GS control sequence
does. However, the Esc [ sequence takes three attribute characters instead
of two. The first two attribute characters are the same as those for the GS
control sequence. The third attribute character selects additional data
attributes as follows:
Reset Modified Data Tags (Esc >)
The Esc > sequence resets the modified data tags (MDTs) of all
unprotected fields on the selected page. This escape sequence has no
effect on the MDTs for protected fields.
Bit 6543210
1=upshift
00 = keyboard input only
01 = AID input only
10 = either keyboard or AID input
11 = reserved
1
0
0
0