Z86130 ZILOG [Zilog, Inc.], Z86130 Datasheet - Page 43

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

Additionally the 16 physical rows can be set for single or
double height and independently enabled and disabled.
Manual row mapping and control commands should only
be used in the POPSET OSD mode.
The procedure for manual row control is as follows:
1. Use the POPSET command to select the OSD pop-up
2. Select a physical row (0 through 15) using the PHY
3. Use the WRITE MAP command to set the display row
The CURSOR SET, WRITE CHAR and WRITE CHARD
commands are used to position the cursor and write the
characters in the selected physical row.
A physical row may be re-selected at any time to change
its characters, row maps, double high mode or enable
status. For example, it may be desirable to load several
rows of characters into physical memory without enabling
them. All of the rows could then be made to "pop" onto the
screen all at once by setting their enable bits.
The following example uses manual row mapping and
control to write three rows of characters. The first row is a
double high row that is enabled before the characters are
sent. This allows the characters to "paint" onto the screen
as they are received. The second and third row are not
initially mapped or enabled when the characters are
written. They are then mapped and enabled after a two
second pause. A new row is then created off-screen to
replace the third row. Finally, after a 2 second pause the
second row is moved to a new display row, the original
third row is disabled and the new third row is mapped and
enabled.
DS96TEL0200
mode. This command prepares the Z86129 for OSD
input, clears the row maps and erases character
memory.
ROW SEL command.
(1 through 15), double high bit, and enable bit of the
selected physical row.
P R E L I M I N A R Y
OSD Command Code
{A1,00}
{A4,31}
{A2,02}
{A3,02}
{A1,01}
{A2,00}
{A3,0a}
{A1,07}
{A2,00}
{A3,06}
{A6,40}
{A1,01}
{A4,16}
{A1,07}
{A4,17}
{A1,08}
{A2,00}
{A3,06}
{33}
Function
*select physical row 0
* map it to display row 1,
enable, double
*cursor to 1
*green
* double wide text
*"The First Row "
*cursor to 0
* yellow
'*These two rows are'
*select prow 7
*cursor to 0
*cyan
'*enabled after a pause'
*wait 2 seconds
*select physical row 1
{A4,16}
enable
replace row 7
'*moved after a pause'
*select POPSET mode
*select physical row 1
*single wide text
*Single wide text
*do the map and enable
*map it to display row 6,
*select prow 7
*map it to drow 7, enable
*prepare a new row to
*select physical row 8
*cursor to 0
*cyan
*Single wide text
NTSC Line 21 Decoder
Z86129/130/131
43
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