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CS609 Assignment 1 solution idea Discussion
ansarali
Posts: 25,240
CS609 Assignment 1 solution
CS609 Assignment 1 IDEA Solution of (Dear student change it as per assignment)
----------------------------
#include<BIOS.H>
#include<DOS.H>
char st1[80] ={"Virtual University of Pakistan$"};
char st2[80] ={"Washi Ali$"};
char st2[80] ={"Tufail$"};
void interrupt (*oldint65)( );
void interrupt newint65( );
void main()
{
oldint65 = getvect(0x65);
setvect(0x65, newint65);
keep(0, 1000);
}
void interrupt newint65( )
{
switch (_AH)
{
case 0:
_AH = 0x09;
_DX = (unsigned int) st1;
geninterrupt (0x21);
break;
case 1:
_AH = 0x09;
_DX = (unsigned int) st2;
geninterrupt (0x21);
break;
case 2:
_AH = 0x09;
_DX = (unsigned int) st3;
geninterrupt (0x21);
break;
}
}
}
Comments
this is 100% correct or not
q.1 Function of interrupt ID Register in UART (marks 3)
q.2 (in BIOS data area) write address of Keyboard Status Byte ( marks 3)
q.3 draw the diagram of Keyboard interface (marks 5)
q.4 write name of 5 registers used in UART (marks 5)
q.5 write two types of interrupts along one difference between them (marks 5)