Hi
well i have this little problem using fasm, and an idt.
I have tryed reading this, http://wiki.osdev.org/I_Cant_Get_Interrupts_Working ; but fast seems not to handle it that way.

So how do i define the 32 bit address, using fasm.

KMT dk

Where's your code? Not all of us have ESP you know...

well
i can include the current one, but it dont compile, due to the problem of the idt and some other stuff, but thats not the deal

it is attacheded


KMT dk

Well, you're not entering protected-mode, you're not loading the interrupt table, you're allowing all interrupts...
'pop esp' can cause problems with different cpu's

Compiles OK for me, but I ain't going to boot with it ('cause it's a mess - or incomplete)

Have a look at the attached - not pretty, but works for me.

WEll
i didnt include the hole code, just the code to show the idt
i will specf my question more currect:

im at adress 0x10000

i want to map the idt entry 0 to isr1
Inside the idt it looks like this:



How to tell fasm that the fist "dw isr1" it ment to be the high part of the address
and the last, of the "dw isr1" the last part of the address..

BTW, if i use the rest of the code, it boots good.
and im using fasm version 1.67.21

edit: [after looking at the code you posted] well, that is what i would do if nobody can tell me how to do it the other way

KMT dk

i have the solution:

using shl and shr
an example:

idt:
dw ((isr1 shl 0x30) shr 0x30) ; the high part of the address
dw 0x8 ; selector
db 0
db 010001110b ; type
dw (isr1 shr 0x10) the low part of the address




isr1:
mov ax,0xdead


edit: changed a error in the example
KMT dk