Apple Network Card RGB IIB User Manual

TAXAN  
APPLE-IIPLUS RGB INTERFACE CARD  
RGB-IIB  
PATENT P  
KAGA ELECTRONICS CO., LTD.  
 
FIG. 2  
VIDEO PIN (SEE FIG. 4)  
SLOT 7 (SEE FIG. 3)  
7.8 JUMPER SOLDERED  
APPLE-II MOTHER BOARD  
FIG. 3  
THE PCB TYPE  
CONNECTOR  
SLOT 7  
4
Locate the video output connector on the rear of the computer cabinet. Directly in  
front of this connector is a short row of electrical components, and then a row of  
four vertical pins which are located nearest to the video jack. Connect the video  
cord from the RGB-IIB module to the second pin from the right end of this row, as  
shown in Fig. 4. Connect the end of video cord with the four pin plug of RGB-IIB  
to the video pin of the APPLE-IIPLUS computer.  
WARNING  
It is very important that step 4 be followed exactly. Connecting the RGB-IIB video  
cord to any other pin in this row may damage the computer, the RGB-IIB or both.  
 
FIG. 4  
VIDEO CORD  
4P PLUG  
CONNECT THE VIDEO CORD  
TO THE VIDEO PIN  
5
6
Plug the end of the connecting cable with the six pin plug into  
the mating six pin socket on the RGB-IIB module.  
Route the connecting through a convenient opening in the rear  
of the computer cabinet close to the module, and plug the eight  
pin end of the cable into the mating connector on the RGB-  
vision monitor.  
7
8
Set the monitor mode selector-switch to the “II” position.  
Recheck each installation operation (step 2 through 7) before  
processing further.  
9
Replace the computer cover and turn ON the A.C. power to  
both the computer and the monitor.  
10  
11  
Adjust the RGBvision monitor to obtain a satisfactory picture  
(refer to OWNER’S GUIDE).  
If there appears any abnormality in the quality of the video  
display, recheck steps 2, 3, 4 & 9, particularly watching for cold  
solder Joints and dirty contacts. If the display is still not satis-  
factory, return the RGB-IIB module and the monitor to the  
dealer from whom they were purchased.  
 
[B] USING METHOD OF ROTARY-SWITCH  
Through the change over operation of the ROTARY-SW, you can  
specify colors you want for the screen and characters in the “TEXT”  
mode which appear first when you turn on the power supply switch  
of APPLE-IIPLUS computer. Colors can be set by changing over  
the position of the ROTARY-SW, and the color correspondence table  
is given below. At normal time, the ROTARY-SW is set to CODE  
(NO. 0).  
COLOR CORRESPONDENCE TABLE  
CODE NO. SCREEN  
CHARACTERS SWITCH POSITION  
0
1
2
3
4
5
6
7
Black  
Black  
Black  
Black  
Black  
Dark red  
Aqua  
White  
Green  
Orange  
Yellow  
Blue  
Yellow  
Black  
Aqua  
0, 8  
1,9  
2
3
4
5
6
Dark blue  
7
(EXAMPLE)  
If you want to specify CODE (NO. 5), change over the switches as  
shown in Fig. 5.  
FIG. 5  
ROTATE A CENTER  
OF SW  
CODE (NO.0)  
CODE (NO.5)  
 
[C] OPTIONAL FUNCTION  
RGB-IIB provides a terminal for the installation of screen mode changeable switch. When  
the APPLE-IIPLUS computer is connected to RGBvision monitor by using RGB-IIB  
interface card, sometimes a phenomenon. may occur in which characters are difficult to  
read in “HGR” mode. This phenomenon occurs due to a limitation of a dot matrix in  
“HGR” mode as shown at page 19 20 of APPLE-IIPLUS reference manual. This  
optional function has been developed to solve this problem. If you connect “ON-OFF"  
push-switch being on the market to this terminal which is the three pin socket by using  
attached 3P plug and change over this switch, the color graphic and characters displayed  
on the screen change into two-color display, thereby vividly displaying the characters. If  
you further change over “ROTARY-SW” in this state, 8 color combinations for the  
screen and characters can be obtained, so that you can use the RGBvision as a mono-  
chrome monitor with colors you desire.  
KAGA ELECTRONICS CO., LTD.  
3-14-2 YUSHIMA BUNKYO-KU, TOKYO 113,JAPAN  
TEL: 03-836-5521  
TSK ELECTRONICS CORPORATION.  
18005 CORTNEY COURT, CITY OF INDUSTRY, CA,  
91745, USA  
TEL:213-810-1291  
PRINTED IN JAPAN  
 

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