Z86130 ZILOG [Zilog, Inc.], Z86130 Datasheet - Page 26

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Z86130

Manufacturer Part Number
Z86130
Description
NTSC LINE 21 DECIDER
Manufacturer
ZILOG [Zilog, Inc.]
Datasheet

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Z86129/130/131
NTSC Line 21 Decoder
COMMANDS (Continued)
Figure 17 shows the two different character sets, Graphics
or Extended, that share the address space C0h-FFh. The
Graphics Character set is in force when the OSD display
is in Drop Shadow mode (the default condition).
26
CURSOR SET
WRITE CHAR
WRITE CHAR
WRITE MAP
(with Double
High Option)
PHYS ROW
Command
POP ROW
DBL WIDE
Name
WAIT
SEL
SEL
First
Byte
A0h
A1h
A2h
A3h
A4h
A5h
A6h
Table 12. Two-Byte OSD Display Mode Commands (Z86129 Only)
Second
Byte
ddh
ddh
nnh
cch
rrh
rrh
rrh
Sets display row and moves cursor to char column 1. The low order nibble of rr
designates the display row. Bit 5 of rr specifies a Double High row. For example:
rr = 0Eh would select display row 14. rr = 23h would select display row three,
Double High.
Sets the physical row, where the low order nibble of rr designates the physical
row. rr can be any value from 00h to 0Fh.
Places the cursor at the character column position designated by cc, which can be
any value from 00h to 20h (column 0-32). Zero is the PAC space.
Writes the data byte dd to the current cursor location and then increments the
cursor.
Maps the current physical row to the display row designated by the low nibble of
the rr byte. Bit 4 of rr = 1 enables display of the row. Bit 5 of rr = 1 indicates a
double High row.
Same as A3 command but specifies a double wide character.
Sets the RDY bit of SS and then suspends serial command execution for
approximately the number of frames designated by the nn byte.
P R E L I M I N A R Y
The two-byte commands GRAPHICS and EXTENDED
above can be used to switch from the Graphics Characters
to the Extended Characters and vice versa. An OSD
screen can only use one set at a time.
Command Function
DS96TEL0200

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