hardware-port Questions
3
Solved
i'm having hard time trying to understand how interrupts work.
the code below initialize the Programmable Interrupt Controller
#define PIC0_CTRL 0x20 /* Master PIC control register address. */
...
Pressmark asked 22/1, 2012 at 11:9
2
Solved
I am reading some code of Linux.
The keyboard.S has something like
outb %al,$0x61
and
inb $0x61,%al
I think the pending 'b' means 'byte', but i still cannot find what these instructions mean....
Seize asked 3/12, 2011 at 5:27
1
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