6530 Programmer's Guide

Block Mode Operation
6530 Programmer’s Guide 3-23
Set Video Attributes (Esc 6)
The Esc 6 sequence turns on selected video attributes for subsequent
screen positions. The Esc 6 is followed by an attribute character that
defines the selected video attributes. The attribute character takes up one
character position on the screen and is placed at the current cursor
location.
The attribute character itself is displayed as a blank having the same
attributes as the subsequent positions it is defining. Thus, reverse video
positions start with a single reverse video blank. An exception to this is
the underscore, which is not turned on until a character following the
attribute character is displayed.
Once set, the attributes remain in effect for all subsequent characters until
the next attribute character is encountered (left to right, top to bottom) on
the screen. When an attribute character rolls off the top of the screen,
subsequent characters return to normal unless other attribute characters
are encountered.
5 1 0 1 0 1 Reverse video and dim intensity
6 1 0 1 1 0 Reverse video and blinking
7 1 0 1 1 1 Reverse video, blinking, and dim intensity
8 1 1 0 0 0 Underscore and invisible
9 1 1 0 0 1 Underscore, invisible, and dim intensity
: 1 1 0 1 0 Underscore, invisible, and blinking
; 1 1 0 1 1 Underscore, invisible, blinking, dim
intensity
< 1 1 1 0 0 Invisible and reverse video
= 1 1 1 0 1 Invisible, reverse video, and dim intensity
> 1 1 1 1 0 Invisible, reverse video, and blinking
? 1 1 1 1 1 Invisible, reverse video, blinking, dim
intensity
Table 3-3. Video Attribute Combinations for
Monochrome Table Attribute Bit Pattern (continued)
Attribute
Character
Bit Pattern
4 3 2 1 0 Selected Video Attributes