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ST92196A датащи(PDF) 117 Page - STMicroelectronics |
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ST92196A датащи(HTML) 117 Page - STMicroelectronics |
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117 / 268 page ![]() 117/268 - ON SCREEN DISPLAY CONTROLLER (OSD) OSD CONTROLLER (Cont’d) 8.5.3.5 Cursor & Flash A cursor facility may be emulated under software control, using the “flash” attribute. This allows to have a “flash-on-word” in serial mode or a “flash- on-character” in extended parallel mode. The cursor facility first requires activating the “flash on” row control bit (refer to Section 8.5.8.3), which acts as a general flash enable. Then program the characters with Flashing Char- acter attribute(s) (serial or extended parallel) at the required locations. The flash effect is obtained by toggling the general flash enable bit. Several flashing words or characters per screen can easily be implemented. 8.5.3.6 Italic Mode The italics attribute is a serial attribute; this means that Italic mode is available in serial mode only. In the matrix description that follows, line 1 is at the top of the character, line 13 (or line 26) is at the bottom. The codes (seen as spaces) needed to activate and deactivate the Italic attribute provide a con- venient method for solving border problems be- tween italic and non-italic characters. Figure 54. Italic Character Mode 18x26 26 1 21 20 17 16 13 12 9 8 5 4 9x13 Shift Row Shift 5 4 3 2 1 0 2.5 2 1.5 1 0.5 0 Normal Italic 13 1 11 10 9 8 7 6 5 4 3 2 Dot Row Dot |
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