Z86129 Datasheet, PDF (34/50 Pages) Zilog, Inc. – NTSC LINE 21 DECIDER

Z86129/130/131
NTSC Line 21 Decoder
PRELIMINARY
Z86129 COMMANDS AND REGISTER SUMMARY (Continued)
Table 16. Z86129 OSD Display Mode Commands
Cmd. Name
RETURN
CLRE
TEXTSET
POPSET
FLIP
OEDM
OENM
POP ROW SEL
(with Double High
Option)
PHYS ROW SEL
CURSOR SET
WRITE CHAR
WRITE MAP
WRITE CHAR
DBL WIDE
WAIT
GRAPHICS
EXTENDED
Cmd. Code Function
30h
31h
32h
33h
36h
37h
38h
A0h,rrh
A1h,rrh
A2h,cch
A3h,ddh
A4h,rrh
A5h,ddh
Carriage return for OSD when in TEXTSET mode
OSD equivalent of delete to end of row (DER)
Establishes a TEXT type of OSD display
Establishes a pop-on type of OSD display
OSD equivalent of pop-on caption end of caption (EOC)
OSD equivalent of erase displayed memory
OSD equivalent of erase non-displayed memory
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.
A6h,nnh
84h,30h
8Ch, 30h
Sets the RDY bit of SS and then suspends serial command execution for
approximately the number of frames designated by the nn byte.
Sets the Graphics Character set in force.
Sets the Extended Character set in force.
Register Name
Serial Status
Register (SSR)
Configuration
Display
H Position
Text Position
Line 21 Activity
XDS Filter
Interrupt
Request
Interrupt Mask
Caption Activity
Table 17. Summary of Z86129/130/131 Internal Registers
Address
None
D₇
RDY
D₆
DAV
D₅
RD2
D₄
WOVR
D₃
INTR
D₂
ROVR
00h
res
res
res
res
VLK
HLK
01h
O15 ODRP CENH C15 CDRP TENH
02h
BLUBX HPO
h₅
h₄
h₃
h₂
03h
y₃
y₂
y₁
y₀
x₃
x₂
04h
res
res
res
res
res
res
05h
s₂
s₁
s₀
PUBL MISC CHAN
06h
dTXT dCAP dXDS dSCH dLOK EOF
07h
dTXT dCAP dXDS dSCH dLOK EOF
08h
T4
T3
T2
T1
CC4
CC3
D₁
FLD
MONO
T15
h₁
x₁
XDS
FUTR
DLE
DLE
CC2
D₀
LOCK
TVS
TDRP
h₀
x₀
SCH
CURR
res
DAV
CC1
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