z86229 ZiLOG Semiconductor, z86229 Datasheet - Page 28

• Manufacturer Part Number: z86229
• Description: Z86229 Ntsc Line 21 Ccd Decoder
• Manufacturer: ZiLOG Semiconductor

% 1 / / # 0 & 5
The WRITE commands require two bytes to execute. The
first byte is the write command. This byte includes the
Z86229 register address (AD00:04). The second byte is the
data to be written.
OSD Display Mode Commands
OSD commands are one and two-byte commands. They are
used to control the loading of data for OSD display and their
Figure 17 illustrates the two different character sets, Graph-
ics or Extended, that share the address space C0h–FFh. The
% Q P V K P W G F
Table 15. Single-Byte OSD Display Mode Commands
Table 16. Two-Byte OSD Display Mode Commands
presentation to the screen. Normally, the OSD display mode
uses 15 TV lines per display row to enhance the screen ap-
pearance. The following tables summarize the single- and
two-byte control commands for the Z86229 On-Screen Dis-
play.
Graphics Character set is in force when the OSD display is
in Drop-Shadow mode (the default condition).
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