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Index > DOS > How to set non-blinking block cursor in DOS?

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lilainst



Joined: 29 Jul 2004
Posts: 11
lilainst 28 Mar 2006, 13:08
I was trying to use int 10h with function ah=01, but I got a blinking block cursor. How can I get a non-blinking block cursor like BSDs' SOFTCUROSR by using BIOS interrupt? Thanks!
Post 28 Mar 2006, 13:08
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casey



Joined: 18 Aug 2005
Posts: 35
casey 28 Mar 2006, 23:29
mov ax,1003h
mov bl,0 ;bl = 0 no blink = 1 for blink
int 10h

I think you get 16 background (paper) colors
without the blink?

--
casey
Post 28 Mar 2006, 23:29
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lilainst



Joined: 29 Jul 2004
Posts: 11
lilainst 29 Mar 2006, 02:24
My current Video Mode is 03H, I tried your code in FreeDos debug.com, but it has no effect.
Post 29 Mar 2006, 02:24
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casey



Joined: 18 Aug 2005
Posts: 35
casey 29 Mar 2006, 07:20
Sorry I was confusing the flashing cursor with a flashing character.

You might try Ralfs interrupt list,
http://www.cs.cmu.edu/~ralf/files.html

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casey
Post 29 Mar 2006, 07:20
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lilainst



Joined: 29 Jul 2004
Posts: 11
lilainst 29 Mar 2006, 08:57
Maybe it's not easy to fulfill this kind of function in one 'int' instruction on PC platform. That is why both linux and BSD refers it as SoftCursor, I suppose.
And I think the possible way to do is, turn off the cursor first, and then write our own cursor with reverse display...
Post 29 Mar 2006, 08:57
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casey



Joined: 18 Aug 2005
Posts: 35
casey 30 Mar 2006, 07:13
That is what I remember doing when playing with the text mode.

Do you use the mouse functions?

Graphic modes were more fun.

It has been at least seven years since I last used assembler
with DOS. I don't think DOS is all that practical since WindowsME.

I think if you use DOS you might as well turn off Windoze Smile


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casey
Post 30 Mar 2006, 07:13
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Matrix



Joined: 04 Sep 2004
Posts: 1164
Location: Overflow
Matrix 30 Mar 2006, 18:57
hi, its easy, do this:

Code:


cursoron:  ;  Turns CURSOR ON.
mov ah,1
 mov cx,0x0607
 int 10h
ret

cursoroff: ;  Turns CURSOR OFF.
mov ah,1
 mov cx,0x1400
 int 10h
ret

cursorhidden: ;  Returns 1 if cursorhidden, 0 otherwise.
  mov ah,0x03
   int 10h
   xor al,al
   cmp ch,$20
   jne .skip
   mov al,1
   .skip:
ret
    


hmm, i remeber there is some custom cursor function too, search in the rb int list, it should be somewhere near these functions.
Post 30 Mar 2006, 18:57
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