Easy question

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Giedrius

Joined: 13 Feb 2005
Posts: 40
Location: Lithuania

Giedrius 13 Feb 2005, 11:42

I can't get this to work:

Code:

times 512-($-$$) db 0
dw 0xAA55

it gives me an error that goes like "Invalid Value"

And are there any sites dedicated to OS development in fasm? Or any other sites you could recommend for beginners?

13 Feb 2005, 11:42

beppe85

Joined: 23 Oct 2004
Posts: 181

beppe85 13 Feb 2005, 12:05

Padding is done as in this topic:
http://board.flatassembler.net/topic.php?p=21637#21637

13 Feb 2005, 12:05

Giedrius

Joined: 13 Feb 2005
Posts: 40
Location: Lithuania

Giedrius 13 Feb 2005, 12:19

Thank you!

13 Feb 2005, 12:19

Dex4u

Joined: 08 Feb 2005
Posts: 1601
Location: web

Dex4u 13 Feb 2005, 17:48

I use this:

Code:

times 510- ($-start)  db 0dw 0xaa55

13 Feb 2005, 17:48

DennisCGc

Joined: 03 May 2004
Posts: 24
Location: Zoetermeer, The Netherlands

DennisCGc 13 Feb 2005, 21:24

Dex4u wrote:

I use this:

Code:

times 510- ($-start)  db 0
dw 0xaa55

Yeah, but the problem is that it's NASM only, and I think he wants the fasm version of the code Smile

But yeah, I noticed the 512 in the code Wink

13 Feb 2005, 21:24

bubach

Joined: 17 Sep 2004
Posts: 341
Location: Trollhättan, Sweden

bubach 14 Feb 2005, 08:06

I use:

Code:

use16
org 0x7C00

boot:

.....

Code:

          rb boot+512-2-$
          dw 0xAA55

14 Feb 2005, 08:06

Tomasz Grysztar

Joined: 16 Jun 2003
Posts: 8351
Location: Kraków, Poland

Tomasz Grysztar 14 Feb 2005, 11:04

Quote:

Yeah, but the problem is that it's NASM only, and I think he wants the fasm version of the code

The Dex4u's code is correct for fasm. The original one is not, because it uses $$ symbol. However I've decided to implement the $$ in future releases of fasm. You can get the 1.59 pre-release from the Download section and it has it already implemented (and documented in the new section "Addressing spaces" in documentation).

14 Feb 2005, 11:04

Giedrius

Joined: 13 Feb 2005
Posts: 40
Location: Lithuania

Giedrius 14 Feb 2005, 12:54

I'm glad to hear that! Keep up the good work.

14 Feb 2005, 12:54

DennisCGc

Joined: 03 May 2004
Posts: 24
Location: Zoetermeer, The Netherlands

DennisCGc 14 Feb 2005, 15:37

Privalov wrote:

Quote:
Yeah, but the problem is that it's NASM only, and I think he wants the fasm version of the code

The Dex4u's code is correct for fasm. The original one is not, because it uses $$ symbol. However I've decided to implement the $$ in future releases of fasm. You can get the 1.59 pre-release from the Download section and it has it already implemented (and documented in the new section "Addressing spaces" in documentation).

Okay, thx for letting me know that Smile

14 Feb 2005, 15:37

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