Hi everybody, this question may be a bit expert. It may be a little hardware-assembly oriented, too. Look at this code, written in TP 7.0:

uses
 gastext,gaskeybd;

procedure i1; interrupt;
begin
 writechr(random(20),random(20),white,'A');
end;

begin
 setintvec($1C,@i1);
 repeat
 until key[kspace];
end.

Why does this interrupt i1 run only at every 54/55th milliseconds?
Or does anyone know any else free like $1C?

PS: The units included are existing, and the writechr routine runs about 250000 times a second on a ~200MHz(198.45) computer.

Thanks for any help.

: Hi everybody, this question may be a bit expert. It may be a little hardware-assembly oriented, too. Look at this code, written in TP 7.0:
:

: uses
:  gastext,gaskeybd;
: 
: procedure i1; interrupt;
: begin
:  writechr(random(20),random(20),white,'A');
: end;
: 
: begin
:  setintvec($1C,@i1);
:  repeat
:  until key[kspace];
: end.
: 

: Why does this interrupt i1 run only at every 54/55th milliseconds?
: Or does anyone know any else free like $1C?
:
: PS: The units included are existing, and the writechr routine runs about 250000 times a second on a ~200MHz(198.45) computer.
:
: Thanks for any help.
:

Int $1c runs at a constant 18.206 times/second. Are you looking for something that will run at the speed of the machine? Int $1C is meant to keep a constant speed across different platforms.


Hope this helps,

Phat Nat

: : Hi everybody, this question may be a bit expert. It may be a little hardware-assembly oriented, too. Look at this code, written in TP 7.0:
: :

: : uses
: :  gastext,gaskeybd;
: : 
: : procedure i1; interrupt;
: : begin
: :  writechr(random(20),random(20),white,'A');
: : end;
: : 
: : begin
: :  setintvec($1C,@i1);
: :  repeat
: :  until key[kspace];
: : end.
: : 

: : Why does this interrupt i1 run only at every 54/55th milliseconds?
: : Or does anyone know any else free like $1C?
: :
: : PS: The units included are existing, and the writechr routine runs about 250000 times a second on a ~200MHz(198.45) computer.
: :
: : Thanks for any help.
: :
:
: Int $1c runs at a constant 18.206 times/second. Are you looking for something that will run at the speed of the machine? Int $1C is meant to keep a constant speed across different platforms.
:
:
: Hope this helps,
:
: Phat Nat
:
:

Thanks Phat Nat,

I'm looking for ints that are free for use. I thought $1C is a free int... could you help me?

: : : Hi everybody, this question may be a bit expert. It may be a little hardware-assembly oriented, too. Look at this code, written in TP 7.0:
: : :

: : : uses
: : :  gastext,gaskeybd;
: : : 
: : : procedure i1; interrupt;
: : : begin
: : :  writechr(random(20),random(20),white,'A');
: : : end;
: : : 
: : : begin
: : :  setintvec($1C,@i1);
: : :  repeat
: : :  until key[kspace];
: : : end.
: : : 

: : : Why does this interrupt i1 run only at every 54/55th milliseconds?
: : : Or does anyone know any else free like $1C?
: : :
: : : PS: The units included are existing, and the writechr routine runs about 250000 times a second on a ~200MHz(198.45) computer.
: : :
: : : Thanks for any help.
: : :
: :
: : Int $1c runs at a constant 18.206 times/second. Are you looking for something that will run at the speed of the machine? Int $1C is meant to keep a constant speed across different platforms.
: :
: :
: : Hope this helps,
: :
: : Phat Nat
: :
: :
:
: Thanks Phat Nat,
:
: I'm looking for ints that are free for use. I thought $1C is a free int... could you help me?
:

You can adjust Int $1C, but it controls your system clock, so if you're not careful, you can throw your system Time out of wack. I didn't get too heavy into the timer adjustments, but check out HelpPC, it has alot of useful information such as ASM commands, interrupts & memory locations. It can be found here:
http://members.tripod.com/~oldboard/assembly/helppc21.zip

Good luck,
Phat Nat

: : : : Hi everybody, this question may be a bit expert. It may be a little hardware-assembly oriented, too. Look at this code, written in TP 7.0:
: : : :

: : : : uses
: : : :  gastext,gaskeybd;
: : : : 
: : : : procedure i1; interrupt;
: : : : begin
: : : :  writechr(random(20),random(20),white,'A');
: : : : end;
: : : : 
: : : : begin
: : : :  setintvec($1C,@i1);
: : : :  repeat
: : : :  until key[kspace];
: : : : end.
: : : : 

: : : : Why does this interrupt i1 run only at every 54/55th milliseconds?
: : : : Or does anyone know any else free like $1C?
: : : :
: : : : PS: The units included are existing, and the writechr routine runs about 250000 times a second on a ~200MHz(198.45) computer.
: : : :
: : : : Thanks for any help.
: : : :
: : :
: : : Int $1c runs at a constant 18.206 times/second. Are you looking for something that will run at the speed of the machine? Int $1C is meant to keep a constant speed across different platforms.
: : :
: : :
: : : Hope this helps,
: : :
: : : Phat Nat
: : :
: : :
: :
: : Thanks Phat Nat,
: :
: : I'm looking for ints that are free for use. I thought $1C is a free int... could you help me?
: :
:
: You can adjust Int $1C, but it controls your system clock, so if you're not careful, you can throw your system Time out of wack. I didn't get too heavy into the timer adjustments, but check out HelpPC, it has alot of useful information such as ASM commands, interrupts & memory locations. It can be found here:
: http://members.tripod.com/~oldboard/assembly/helppc21.zip
:
: Good luck,
: Phat Nat
:
:


Thanks for help, Phat Nat! Can I count on you in the future? I mean, in questions like this... I should written this into an ASM msg. board... thanks again

hey there

1) here is a great interrupt list site for your help.
http://lrs.fmi.uni-passau.de/support/doc/interrupt-57/INT.HTM

2) i know only few interrupt that happen in special events.
$1c runs 18.2 times every seconds.
9 runs every keyboard press
5 runs every time ctrl+printscrm pressed
$23 runs rund when ctrl+c pressed
$24 runs when dos error jumps

and if you need help send mail to me at dolevsh@hotmail.com


dolev

: hey there
:
: 1) here is a great interrupt list site for your help.
: http://lrs.fmi.uni-passau.de/support/doc/interrupt-57/INT.HTM
:
: 2) i know only few interrupt that happen in special events.
: $1c runs 18.2 times every seconds.
: 9 runs every keyboard press
: 5 runs every time ctrl+printscrm pressed
: $23 runs rund when ctrl+c pressed
: $24 runs when dos error jumps
:
: and if you need help send mail to me at dolevsh@hotmail.com
:
:
: dolev
:
:
Hi Dolev9,

Thanks for the link. More help is just more experience.

Auf viedersehen!

****************
Any questions? Just ask!

GAASHIUS