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BIOS Int 13h 08 DBT issue Bytes per sector code returns 0xF0 instead of 0x00 - 0x04
I was using int 13h 08 to load disk parameters and got an invalid value from the disk base table (dbt).
The value in question was 0xF0.
note: dbt is returned in es:di
Reference to int 13h 08: https://...
TheNullPlayer
Votes: 0
Answers: 1
When is a process exactly in waiting state when I/O for a process demanding keyboard input occurs ? I mean the exact little time frame
Consider the simple c program :
int main(){
char str[10];
scanf("%s",str);
printf("The string is %s \n",str);
}
According to the book Operating System Concepts a process is in wa...
user14210576
Votes: 0
Answers: 1
When kernel stack's esp is stored to TSS for interrupt return iret?
When I read Intel's X86 programmer's manual, see the following for interrupt & interrupt return with stack switching:
interrupt:
If a stack switch does occur, the processor does the following:
Te...
zminya
Votes: 0
Answers: 1
Interrupt is pending, but my interrupt routine is not called
Summary:
I've configured a GPIO as an interrupt. I can see from all of the registers that it appears to be triggering, but my interrupt routine is never called.
Details:
I'm using a Nucleo F446 board,...
JeffB
Votes: 0
Answers: 1