HELP NEEDED..cannot send data using ps2 keyboard

[ecah]

everytime i connect the ps2 connector to the pc, pc will make a beep sound and there is no data being send from pic

here is my code. i just want to send character 'A' using ps/2
A=0001 1100
porta0 = clock
portb0 = data

#include <16f877a.h>
#fuses HS,NOWDT,NOPROTECT,NOLVP,NOBROWNOUT,NOPUT
#use delay(clock=4000000)
#byte porta=5
#byte portb=6

void main()
{

set_tris_a(0);
set_tris_b(0);

porta=0x00;
portb=0x00;
delay_ms(100);

while (1)
{

porta=0x01;
delay_us(10);
portb=0x00; //send startbit
delay_us(10);
porta=0x00;
delay_us(50);


porta=0x01;
delay_us(10);
portb=0x00; //send 0
delay_us(10);
porta=0x00;
delay_us(50);

porta=0x01;
delay_us(10);
portb=0x00; //send 0
delay_us(10);
porta=0x00;
delay_us(50);

porta=0x01;
delay_us(10);
portb=0x01; //send 1
delay_us(10);
porta=0x00;
delay_us(50);

porta=0x01;
delay_us(10);
portb=0x01; //send 1
delay_us(10);
porta=0x00;
delay_us(50);

porta=0x01;
delay_us(10);
portb=0x01; //send 1
delay_us(10);
porta=0x00;
delay_us(50);

porta=0x01;
delay_us(10);
portb=0x00; //send 0
delay_us(10);
porta=0x00;
delay_us(50);

porta=0x01;
delay_us(10);
portb=0x00; //send 0
delay_us(10);
porta=0x00;
delay_us(50);

porta=0x01;
delay_us(10);
portb=0x00; //send 0
delay_us(10);
porta=0x00;
delay_us(50);

porta=0x01;
delay_us(10);
portb=0x01; //send parity bit
delay_us(10);
porta=0x00;
delay_us(50);

porta=0x01;
delay_us(10);
portb=0x01; //send stopbit
delay_us(10);
porta=0x00;
delay_us(50);
}
}

[Ttelmah]

How about searching here. There have been PS/2 drivers posted in the past....
Your basic understanding of PS/2 is flawed. When you are not driving the lines, these _must_ be set as 'float'. You need to verify that both lines are high, before starting. To send a '1' (high), you set the line to 'float'. You only drive the line, when you want to send a '0'. If the clock line goes low during the period when it is floating, then you must stop sending data (basically the PC wants to take control of the line).
Then, you don't send 'characters', using PS/2, but keyboard scan codes. To send 'A', you need to send the scan code for 'key A down', then the code 'F0' (release), followed by the same scan code. The scan code for 'A', on a standard keyboard, is '1C', which is the code you are trying to send. Just sending Key A down, on it's own, will result in a continuous stream of A's being seen at the keyboard repeat rate.

Best Wishes

[PCM programmer]

In his previous post, six days ago, he was given several links to PS/2
code which he ignored.
http://www.ccsinfo.com/forum/viewtopic.php?t=38189