z86131 ZiLOG Semiconductor, z86131 Datasheet - Page 55

• Manufacturer Part Number: z86131
• Description: Ntsc Line 21 Decoder
• Manufacturer: ZiLOG Semiconductor

ZiLOG
Display Register Script Files (Z86129 Only)
H Position Register Script Files (Z86129 Only)
Text Position Register Script Files (Z86129 Only)
XDSCAP Program
This program performs the application’s task of XDS data
recovery. XDS recovery must first have been enabled
through the appropriate XDS Filter command. Examples of
Script files for setting the XDS Filter Register are provided
on page 55.
DS007200-TVX0199
File Name
File Name
DN
DT1
DT2
DT3
DT3A
DCE
File Name
HPOSC
HPOSR
HPOSL
HPOSCB
File Name
TPOS10A
TPOS15
TPOS13
TPOS10
COMMAND
{xxh,yyh}
{c1,c0}
{c1,c1}
{c1,c2}
{c1,c3}
{c1,c3}
{c1,e0}
COMMAND
{xxh,yyh}
{c2,26}
{c2,1d}
{c2,29}
{c2,a6}
COMMAND
{xxh,yyh}
COMMAND
{xxh,yyh}
{c3,ff}
{c0,01}
{c3,dd}
{c3,ba}
{c3,fd}
{c3,fa}
{c3,ff}
Comments
*set display register to default
conditions
*set display register to TEXT
drop shadow
*set display register to TEXT
15 lines per row
*set display register to TEXT
drop shadow, 15 lines
*15 tv lines and drop text
*13 rows of text, base row 13
*disable CAP Enhanced mode
Comments
*change text pos register to
base row 15, 15 rows
*set conÞg register to TVS=1.
Changes VBI line to L22 PAL.
Comments
*center box
*move box right 2.97 µs (from
center)
*move box left 0.99 µs (from
center)
*center box & make Box Blue
Comments
*text, base row 15, 15 rows
*text, base row 15, 13 rows
*text, base row 15, 10 rows
*text, base row 11, 10 rows
P R E L I M I N A R Y
The program is invoked by typing:
When the program is invoked, the PC screen displays:
The responding slave address is reported to the screen.
When communication is acknowledged, the program dis-
plays all XDS data recovered from those packets that were
enabled through the XDS Filter command. For example:
The ASCII characters are presented as ASCII characters
while the non-printing characters are displayed by their Hex
value within curly braces. Byte pairs, such as
are presented as pairs within the curly braces, separated by
a comma, for example, {01,03}.
If no data is received within approximately 45 seconds, the
program times out, reports “Data Not Available”, and exits.
Note: The XDSCAP program can also be exited by entering a
XDS Filter Register Script Files
Using Interrupts
Interrupts involve the use of the Line 21 Activity Register,
the Interrupt Request Register and the Interrupt Mask Reg-
ister. The Z86129/130/131 must be configured for VLK in-
ternal so that the V
File Name
FILA
FIL0
FILCA
FILC
FILFA
FILCH
FILM
FILTIME
FILVCR
xdscap<ENTER>
EEG CCD2 XDS Data Recovery Test Program
Version x.xx
Slave Address is 28h
{01,03}Current Program{00}{0F,7F}....etc
Control C (^C) character.
COMMAND
{xxh,yyh}
{c5,1F}
{c5,00}
{c5,01}
{c5,41}
{c5,02}
{c5,04}
{c5,08}
{c5,28}
{c5,9e}
IN
/INTRO signal, Pin 13 is an output pro-
Comments
*set xds Þlter to all
*set xds Þlter to none. Turns
off xds recovery
*set xds Þlter to all current
class
*set xds Þlter to current, in
band class
*set xds Þlter to all future
class
*set xds Þlter to channel
class
*set xds Þlter for misc. info
*set xds Þlter time only
*set xds Þlter vcr info
NTSC Line 21 Decoder
Z86129/130/131
Class,Type
55
,