DonNews #16 22 марта 2002

HARD - if your PENTAGON not dead yet, then you do not need to read it =)

__________________________________________
(C) Wild / oHg / XXL


       Wrong colors.

          (Repair Pentagon'a)


   One of the main causes of color distortion is the lack of 
recourse to the micro scheme D43 or her fault. Checking

accurate color reproduction is made
on an already-functioning computer at the end of setup.

   To check the circulation to the D43 (not Z80)
Connect to ground conclusions elements D13/22 (WR), D13/20 
(1ORQ), D13/30 (A0) Then the element D50/10 appears high

potenial for D51/12-nizkiy.Pri lower potential at the element 
outputs D9 / 5 and D9 / 6 Output D9 / 4 will be too low capacity

With a low potential at the element outputs
D9 / 5 and D9 / 6 navyhode D9 / 4 will be too low capacity 
(signal C24). With a positive differential output D43 / 9 
information installed on vihode appears on the

output. D43 circuit controls the color
BORDER on ryazryadm 0,1,2 (pins 2,7,10) in
According to the chart below:


   Color BORDER Pin Numbers D43


                  2 7 10

    Black 0 0 0

    Blue 1 0 0

    Red 0 1 0

    Purple 1 1 0

    Green 0 0 1

    Blue 1 0 1

    Yellow 0 1 1

    White 1 1 1

Note: The colors are in order of age
           brightness of the screen black-and-Be
           logo display.

   Now install the board all the details and
connect the keyboard.

   After the initial reset the computer installs the following 
combination of colors: 


    BORDER-WHITE

    PAPER-WHITE

    BLACK INK


   Ie at startup is obtained
on a white sheet of black splash firm.

   Check the color matching and job
Port D43.

   Enter the command: BORDER N (ENTER), where N
varies from 0 to 7. BORDER color depending on N changes in the 
following order: 


    N-0 black

    N-1 color blue

    N-2 color red

    N-3 color purple

    N-4 color green

    N-5 color blue

    N-6 color yellow

    N-7 white


   By the non primary colors correctly, check your connections
computer to the RGB-input TV!

   Then check the color matching the main part of the 
screen-PAPER.Dlya this set cursor mode E, CAPS SHIFT and PAPER. 
Team: PAPER N (ENTER), where N is applied values ​​from 0 to 
7.Tsvet main part of the screen should be the same as when 
checking BORDER. 

   To check, enter the INK
Team:

   NEW (ENTER) INK N PRINT "any text"
(ENTER).

   Changing the value of N in the range 0-2, you
should get the text color on the screen:


    0-BLACK

    1-BLUE

    2-RED


   Checking the flicker mode and FLASH mode
high-brightness BRIGHT.Dlya this, we introduce
following command:


   NEW (ENTER) FLASH 1 (ENTER).


   The screen should change color from white to
black, because after reset is set
PAPER-7 and INK-0.Esli screen does not flicker, then
Check the items D7, 4, and VT2

   Then enter the following program:


         10 FOR A-0 TO 21

         20 FOR B-0 TO 7

         30 PRINT PAPER B; ""

         40 PRINT PAPER B; BRIGHT 1; "

         1950 NEXT B

         60 NEXT A


   Run it by Directive RUN (ENTER). This
program forms a colorful band with two
brightness levels.