Boser HS-1770, Manual

Page: 27 / 60

21
MOV DX, 2FH
MOV AL, 00H ; *00H=Disabled
OUT DX, AL
;----------------------------------------------------------------
;Exit extended function mode
;----------------------------------------------------------------
MOV DX, 2EH
MOV AL, AAH
OUT DX, AL
User can also use AL, 00H’s defined time for reset purposes, e.g.00H
for Disable, 01H = 1sec, 02H=2sec….FFH=255sec.
3.19 TV-Out Function
The HS-1770 can support TV-out function whose input could be up
to 800 x 600 graphics resolutions. World Wide Video standards are
supported including NTSC-M (North America, Taiwan), NTSC-J
(Japan), PAL-b, D, G, H, I (Europe, Asia), PAL-M (Brazil), PAL-N
(Uruguay, Paraguay) and PAL-NC (Argentina).
CN4: TV-Out Connector
PIN Description PIN Description
1 GND 2 GND
3 Y 4 Pb
5 N/C 6 Pr
7 N/C 8 GND
9 GND 10 GND
1
9 10
2
8
3 5 7 4 6
JP6: Display Out Function Select
Options Settings
CRT (default) Open
TV-Out Short
2
1
U33(SW1/SW2)/U34(SW8): CRT/TV Output Mode Select
Settings
Options
U33(SW1) U33(SW2) U34(SW8)
RGB for CRT (default) OFF ON OFF
C/Y/CVBS for TV ON OFF ON
C/Y/Y for TV ON OFF OFF
R/G/B for TV OFF OFF ON
Pr/Y/Pb for TV OFF OFF OFF