Little but efficient code !   Posted on Sunday, March 05, 2006

It is very pleasant to have in few lines
of assembly language the solution which
allows me to continue my os development.

A big thank you !

i need help   Posted by: emily anna on Monday, May 07, 2007

exellent code, could you help me traslating this into tc?? i have tried a lot, but it wont work.i got this
#include <stdio.h>
#include <dos.h>
#include <conio.h>
char sp2;
void CHKPRT(){
char exit=0,ap;
asm xor cx, cx
do{
asm in al, 0x64
asm mov ap,al
if ((ap&2)==0)
{exit=1;
}
}while (exit==0);
}
void PS2SET(){
asm mov al, 0xa8
asm out 0x64, al
CHKPRT();
}
void WMOUS(){
asm mov al, 0xd4//; write to mouse device instead of to keyboard
asm out 0x64, al//; write to keyboardcontroller
CHKPRT();//; check if command is progressed (demand!)
}
voidMBUFFUL (){
char exit=0,ap;
asm xor cx, cx
do {
asmin al, 0x64 //; read from keyboardcontroller
asm mov ap,al
if ((ap&0x20)==0)
{exit=1;
}
}while (exit==0);
}
void CHKMOUS(){
char exit=0,ap;
sp2=-1;
asm xor cx, cx
do{
asm in al, 0x64//read from keyboardcontroller
asm mov ap,al
if ((ap&1)!=0)
{exit=1;
}
sp2++;
}while (exit==0); // check if controller buffer (60h) has data
}
voidACTMOUS(){
WMOUS();
asm moval, 0xf4 //; Command to activate mouse itselve (Stream mode)
asmout0x60, al //; write ps/2 controller output port (activate mouse)
CHKPRT();//; check if command is progressed (demand!)
CHKMOUS();//; check if a byte is available
}
void DKEYB(){
asm mov al, 0xad//; Disable Keyboard
asm out 0x64, al//; write to keyboardcontroller
CHKPRT(); //; check if command is progressed (demand!)
}
void EKEYB(){
asm mov al , 0xae//; Disable Keyboard
asm out 0x64, al//; write to keyboardcontroller
CHKPRT(); //; check if command is progressed (demand!)
}

void GETB(){
char ps;

do{
CHKMOUS();
}while(sp2!=0);

DKEYB();
asm in al, 0x60//; read ps/2 controller output port (mousebyte)
asm mov ps,al
EKEYB();//; enable keyboard
printf("\n%d",ps);
}
int main(void)
{
char b, d =0;
PS2SET();
WMOUS();
GETB();
do {
clrscr();
GETB();
GETB();
GETB();
} while(d==0);
return 0;
}

My Appreciation   Posted by: Maxinator on Thursday, October 11, 2007

I cant say, how much i thank you, i searched for exemples overall in the net, because my selfwritten-code based on the ralf-browns-list didnt work, but i couldnt find anything. I also searched programmersheaven archives, but it seems, like i oversaw your code, or i thought, id dont work as well, because when i first searched fpr ps/2-mouse-drivers i tested it while running xp and now i always test the drivers with my own written OS, for that a also needed this piece of code. THANKS..

P.S.: This is my 5th search. Between the over searches there was a gap of around some weeks or even months.

Well this is not the best place to ask for my help..   Posted by: MI-7 on Tuesday, November 20, 2007

For questions and stuff you can contact me by internal mail of programmersheaven or by email.
email: MI-7@badassdummies.nl

the main fault i see in your tc script is that you use the asm not in the right way.

you can use this as following:

asm {
xor ax,ax
}

if you want to use variables of c in the asm for in or output you can do that as follows:

char vari;
asm {
mov AH, vari
cmp AH, 0
}

and as i remember its not easy to use the asm command in tc. this should be enabled, if it isnt by default, somewhere at the compiler settings.

[this is what i remembered at this moment so it might be a little bit different]

I can help better by mail,irc,msn and such.

Greetz MI_7