A little HELP!!

[aerostar]

Looks like we both doing the same thing, attached is my corrected version

I have tested this with NTSC output from RPi and it switches and displays correctly.

I have moved the text, also the RPM and NTSC so that it only appears when there is incoming video.

Regarding the text size I think you will have to play with the POSITION REGISTER - never tried that but that should do something. The STV data sheet does not give much idea as to what that does !

Use my hex file and see if it works on yours.

Should have changed the file name - memory lapse.

[aerostar]

I had a quick look at the Position Register and put this in

WDATA = %0001001000001111 '%0001 011111 001111
GOSUB Send ' Position ADDRESS 15

It moved the lines up and I could get line 9 showing - still missing line 10 at the moment.

Looks like Row Attributes may also be involved.

Will have to ask my friend who did the assembler version if he did anything to Row Attributes.

[Ramius]

Hi Aerostar!
I had thought that this was the character size:

WDATA = %0001000011110000 '4 PIXELS HORIZ AND VERT !
GOSUB Send ' Zoom ADDRESS 12

So I changed it to: WDATA = %0001000000000000 and it made no difference in the text size!

I would also be curious if your setup displays actual red characters as mine seems like a light pink.

Here is a picture of my board

Best, Ed

[aerostar]

Actually the zoom was already set at minimum.

Not played with colour oops sorry color!! but Never Twice Same Color sets have a HUE/TINT control that you can alter on the screen.

I now have worked out getting all lines on screen, it is combined with position and line characteristics. Removed the border area around the characters

Here are the values I have used to get the attached picture.

WDATA Values to be changed to values below

In init routine

'-------------------------------------------------------------
WDATA = %0001001100001111 ' was %0001 011111 001111
GOSUB Send ' Position ADDRESS 15 *****
'-------------------------------------------------------------

and in this

FOR ICOUNT = 0 TO 10
WDATA = %0001000010000001 '<<<<<$10c4 originally
' WDATA =%0001000010000111
GOSUB Send
NEXT ICOUNT

that should! sort the screen out.



Quick and dirty code to do screen fill as a subroutine - modified CLS routine

Run it with no external video input

This is where I put the call, once it has done the Xs it will not go further remeber to comment out GOSUB HEADER.

LOOPER:
    'GOSUB HEADER    ' LINE 3 RIGHT HAND SIDE TEST.
    GOSUB FILLSCREEN
STOPHERE:
    GOTO STOPHERE

I put this at the very bottom of current code.

'----------------------debug fills screen with X------------------

FILLSCREEN: 
    'character=$0B       'SPACE
     TEMP1=0   ' LINECOUNTER
     TEMP =0    'CHARCOUNTER
loop2a:
    
	WDATA = 0  ' LINECOUNTER*256 + CHARCOUNTER   ADDRESS
    GOSUB Send
    

LOOP3a:    '                :CHARACTERS 100011       
	WDATA = %0001011100100011  '     X CHARACTER
    GOSUB Send
	TEMP = TEMP + 1
	IF TEMP >= 28 THEN
    TEMP = 0
    TEMP1=TEMP1 + 1
	ENDIF
	IF TEMP1 >= 11 THEN SCREENBLANKA
 	
    GOTO LOOP3A
    
SCREENBLANKA:
	RETURN

[aerostar]

Had a play with colors -I found that reducing the drive in the MODE REGISTER, BIT M5, from 6dB to 0dB improved the colours, so M5 needs to be a 0, this will depend on how good the monitor is..



If you mofify the fillscreen to the following you should get lines of ifferent colors.

FILLSCREEN: 
    'character=$0B       'SPACE
     TEMP1=0   ' LINECOUNTER
     TEMP =0    'CHARCOUNTER
loop2a:
    
	WDATA = 0  ' LINECOUNTER*256 + CHARCOUNTER   ADDRESS
    GOSUB Send
                                             

LOOP3a:    '                :CHARACTERS 100011       
	WDATA = %0001011100100011  '     X CHARACTER
'   WDATA = %0001011101110111
'    if temp1 =0 then WDATA = %0001011101110111
    if temp1 =1 then WDATA = %0001000001100011
    if temp1 =2 then WDATA = %0001000101100011
    if temp1 =3 then WDATA = %0001001001100011
    if temp1 =4 then WDATA = %0001001101100011
    if temp1 =5 then WDATA = %0001010001100011
    if temp1 =6 then WDATA = %0001010101100011
    if temp1 =7 then WDATA = %0001011001100011
    if temp1 >=8 then WDATA = %0001011101100011
    
    GOSUB Send
	TEMP = TEMP + 1
	IF TEMP >= 28 THEN
    TEMP = 0
    TEMP1=TEMP1 + 1
	ENDIF
	IF TEMP1 >= 11 THEN SCREENBLANKA
 	
    GOTO LOOP3A
    
SCREENBLANKA:
	RETURN

[Ramius]

Wow! This is really so great! Thank you! I will try the above code just as soon as possible. I loved your screen full of "X's"! If I understand things correctly the text is as small as it can be? FYI, I work at Fox Television so a high quality professional monitor is not difficult to bring home. Did you like how I built the board with the chip? This display is something I have been dreaming about for several years now and it is so wonderful to finally see some light at the end of the tunnel! I also believe the research and development is a major contribution for all others!

Best, Ed

[aerostar]

Board looks great - There is still a demand for analogue OSD despite all the digital stuff around. The chips were hard to find after they had been discontinued, but your find of supplier seems to have lots still, price is good, Ebay prices .... silly.

What are you going to this it for ?, I am guessing at RC aeroplane or boat, video from it and motor speed from port and starboard propulsion units.