Search found 30 matches

by wererabit
Wed Oct 12, 2011 9:02 am
Forum: Beginners
Topic: New Chapter
Replies: 2
Views: 8413

New Chapter

Hi guys,

Just wondering if the new chapter will be out soon?

Thanks
by wererabit
Mon Apr 05, 2010 2:02 am
Forum: Beginning OS Development
Topic: A20
Replies: 2
Views: 6451

Re: A20

thank you
by wererabit
Sun Apr 04, 2010 6:19 am
Forum: Beginning OS Development
Topic: A20
Replies: 2
Views: 6451

A20

Hi,

I was reading the demo code of Enable A20 tutorial. I see this

Code: Select all

    cli
    pusha
   
    mov al, 0xDD
    out 0x64, al
   
    popa
    ret


Why do we disable interrupt here? same for (Enables a20 line through output port). We dont have to do for the other?

Thanks
by wererabit
Tue Mar 23, 2010 9:30 am
Forum: Beginning OS Development
Topic: Series Review
Replies: 1
Views: 5382

Series Review

Just out of curiosity, when will be the revision for the series? And are you working on the second part of the graphics or chapter 22?

Thx
by wererabit
Thu Mar 11, 2010 8:49 pm
Forum: Beginning OS Development
Topic: BootLoader 4
Replies: 4
Views: 8692

Re: BootLoader 4

Thanks for the reply.
by wererabit
Tue Mar 09, 2010 5:23 am
Forum: Beginning OS Development
Topic: BootLoader 4
Replies: 4
Views: 8692

Re: BootLoader 4

Thanks, Mike. My question is what happens if we don't do that?
by wererabit
Mon Mar 08, 2010 8:20 pm
Forum: Beginning OS Development
Topic: BootLoader 4
Replies: 4
Views: 8692

BootLoader 4

Hi, I have a question. In the tutorial 6, the section where we only want to print out a message for our 2nd stage boot loader. I see this ;*************************************************; ; Second Stage Loader Entry Point ;************************************************; main: cli ; clear interru...
by wererabit
Wed Mar 03, 2010 11:45 am
Forum: Beginning OS Development
Topic: "Noob" Questions
Replies: 5
Views: 9481

Re: "Noob" Questions

thanks, that was really helpful
by wererabit
Fri Feb 26, 2010 10:19 am
Forum: Beginning OS Development
Topic: "Noob" Questions
Replies: 5
Views: 9481

Re: "Noob" Questions

Thanks for the input. I already tried that but it doesnt work.( It is a new sys file)
by wererabit
Fri Feb 26, 2010 3:39 am
Forum: Beginning OS Development
Topic: "Noob" Questions
Replies: 5
Views: 9481

"Noob" Questions

Hi guys,

I just re-installed my pc and get to windows 7 64 bits. Now I have problem with Virtual Floppy Drive, since it doesn't working in 64 bits mode. Does anyone know any good other virtual floppy drive I could use instead?

Thank you
by wererabit
Tue Feb 23, 2010 10:04 am
Forum: News Discussion
Topic: Graphics 1 Chapter has been released
Replies: 6
Views: 24403

Re: Graphics 1 Chapter has been released

thanks, cant wait for the next tutorial
by wererabit
Wed Apr 01, 2009 9:04 am
Forum: Beginning OS Development
Topic: Today's question
Replies: 1
Views: 5890

Today's question

guys, I have some other questions I know I know I am such a paint I am at tutorial 11, the last part. I know we did most of these while we were working on our boot loader. I understand the main points, but there are some changes and some of those confuse me. and here they go: Sorry guys, its kind o...
by wererabit
Tue Mar 31, 2009 8:50 pm
Forum: Beginning OS Development
Topic: Random Questions
Replies: 3
Views: 7772

Re: Random Questions

I understand otehr things, but this is what I was looking for
In protected mode, the segment registers give an index into the GDT, instead of an absolute memory address.


Thanks for helping out
by wererabit
Tue Mar 31, 2009 7:46 am
Forum: Beginning OS Development
Topic: Random Questions
Replies: 3
Views: 7772

Random Questions

hi guys, Can you help me out with this? mov ax, 0x10 ; set data segments to data selector (0x10) mov ds, ax mov ss, ax mov es, ax mov esp, 0x90000 This is taken from tutorial 11 (Kernel file). I have been using it for a while now and I have taken it for granted. My question is I understand that we a...
by wererabit
Wed Mar 25, 2009 8:40 pm
Forum: Beginning OS Development
Topic: BootLoader Problem
Replies: 2
Views: 6917

Re: BootLoader Problem

Hi Andrew, I just drag the KRNLDR.SYS across to the A drive. Anyway, some one pointed out that there is an error in .EVEN_CLUSTER: add dx, 0000111111111111b ; remove the top 4 bits (significant) jmp .NEXT_CLUSTER It should be and not add I still haven't tested yet, but more than likely that is the c...