ST92185B STMicroelectronics, ST92185B Datasheet - Page 103
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ST92185B
Manufacturer Part Number
ST92185B
Description
16k/24k/32k Rom Hcmos Mcu With On-screen-display
Manufacturer
STMicroelectronics
Datasheet
1.ST92185B.pdf
(178 pages)
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ON SCREEN DISPLAY (Cont’d)
7.4.4.4 Font Selection using Parallel Attributes
Parallel attributes have an immediate effect. They
are applied to the associated character. These at-
tributes can also have a “serial” effect, the defined
attribute being still defined on the following charac-
ters: this is known as attribute propagation.
Shape attributes (US,DH,BX,SR) are propagated
when PS is toggled to 0. In the same way, color at-
tributes are propagated when PS is toggled to 1.
Table 19. Font Selection using Parallel Attributes
In the example in
ters is displayed. In the line “Display with” we can
see that, starting from Char(n) and ending with
Char n+2, the CSS setting made at Char (n-2) is
propagated.
Table 20. Example of Character Set Selection
Display with
CSS used for character
Stored CSS
CSS=
PS=
set selection
Attribute
Parallel
PS= 0
PS= 1
Char(n-2)
CSSn-2
CSSn-2
CSSn-2
Table
1
6,, a string of six charac-
Char(n-1)
Character Code
CSSn-1
CSSn-1
CSSn-2
1
80..FF
80..FF
00..1F
20..7F
00..1F
20..7F
Char(n)
CSSn-2
CSSn-2
none
0
32 Control Characters (serial attributes function table)
96 Basic Characters chosen from G0 or G1 font
128 extended characters G2-based X/26 and Menu Characters
32 Control Characters (serial attributes function table)
CSS= 0: G0 or G1 selection depending on color serial attribute
CSS= 1: G1 selection
CSS= 0: Select G2-based X/26 + Menu
CSS= 1: Select extended Menu + 32 reserved characters
Char(n+1)
CSSn-2
CSSn-2
none
0
CSS has two kinds of behaviour:
– If PS is set once, the CSS attribute is applied on
– If PS is set twice, the CSS of the first character
Note: The value stored as a preceding CSS value
is forced when alpha or mosaic color serial at-
tributes are used. Alpha serial attributes reset the
memorized CSS: Mosaic serial attributes set the
memorized CSS.
ST92185B - ON SCREEN DISPLAY (OSD)
the current character only.
with PS=1 is propagated.
Char(n+2)
CSSn+2
CSSn+2
CSSn-2
1
Character
Definition
Char(n+3)
CSSn+3
CSSn+3
CSSn+2
1
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