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rhyno_dagreat



Joined: 31 Jul 2006
Posts: 487
Location: Maryland, Unol Daleithiau
rhyno_dagreat
Hello again! I am having trouble with my FASM code syntax I assume, and I was hoping if someone could look at this and show me the errs of my ways.

Code:
CmdPrintFunc:
        mov ax, 10h
        mov ds, ax
        mov ebx, 0B8000h
        cmdloop:
                int 0x21
                cmp al, 1Ch
                je done
                ;mov [ScanCode], al
                mov cl, [KeyBoard + ScanCode]
                mov byte [ds:ebx],cl
                inc ebx
                mov byte [ds:ebx], 1Bh
                inc ebx
                inc ax
                jmp cmdloop   

done:
       ret

KeyBoard db 0, 0, "1", "2", "3", "4", "5", "6", "7", "8", "9", "0", "-", "=", 0, 0, "Q", "W", "E", "R", "T", "Y", "U", "I", "O", "P", "[", "]", 0, 0, "A", "S", "D", "F", "G", "H", "J", "K", "L", ";", "'", "`", 0, "\", "Z", "X", "C", "V", "B", "N", "M", ",", ".", "/", 0, "*", 0

ScanCode db 0     
    


That's all the code pertaining to it, and my interrupt # 21h is the Keyboard one, and it puts the scancode into register AL.

Thanks for your time.
Post 07 Oct 2006, 00:38
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sylwek32



Joined: 27 Apr 2006
Posts: 339
sylwek32
what isnt working?
Post 07 Oct 2006, 01:33
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smiddy



Joined: 31 Oct 2004
Posts: 559
smiddy
I can only surmize from your code that selector/segment 10h is a linear address, otherwise you may be pointing to somewhere off of your base address, assuming you used and MZ executeable from DOS, you could be writting to somewhere outside of the video text frame buffer. I am curious why you are incrementing AX prior to the jmp cmdloop, why is that?

Give me more information...
Post 07 Oct 2006, 02:13
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Niels



Joined: 17 Sep 2006
Posts: 255
Niels
Hello rhyno_dagreat,

Did you remap the PIC and start the timer interrupt on 20?
The first 32 (0-31) interrupts are 'reserved' for processor 'things' (faults/exceptions).

When pressing the keyboard, the particular ISR will be started.

Don't forget the iret with the ISR and the EOI(EndOfInterrupt) for PIC-ints.

Niels.


ps.
I did not speak about the particular function above...You say int21 puts scancode in al and on the next line you count keyboard+scancode...
Post 07 Oct 2006, 15:20
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Dex4u



Joined: 08 Feb 2005
Posts: 1601
Location: web
Dex4u
Having a second look shows that the int 21h is your own function, ( as in does not need a function number to go with it, as there is none, as AX is distroyed ).
First thing is you need to do is uneyelight the " ;mov [ScanCode], al" part, for it to work.
I would agree with smiddy as in why do you inc AX ?.
But we need to know what it does when you test it.
Post 07 Oct 2006, 15:24
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Niels



Joined: 17 Sep 2006
Posts: 255
Niels
@Dex4u, It seems to me, the goal of the function is catch keyboard-int information and print the incoming characters to screen.
Post 07 Oct 2006, 16:30
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Dex4u



Joined: 08 Feb 2005
Posts: 1601
Location: web
Dex4u
Niels wrote:
@Dex4u, It seems to me, the goal of the function is catch keyboard-int information and print the incoming characters to screen.

I was meaning more in what error does he get, eg: crashs, wrong ASCII etc Wink
Post 07 Oct 2006, 17:08
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Niels



Joined: 17 Sep 2006
Posts: 255
Niels
@Dex4u, I guess no errors, I sense the function CmdPrintFunc is not hailed anywhere.
Post 07 Oct 2006, 17:53
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rhyno_dagreat



Joined: 31 Jul 2006
Posts: 487
Location: Maryland, Unol Daleithiau
rhyno_dagreat
Geeze, I'm sorry I didn't elaborate on it sooner. I was half asleep when I posted. Neils is right about what it's supposed to do, basically get a scancode from the keyboard, and the value of the scancode is added to the starting byte of the KeyBoard array to put on the key needed (I.E., the scancode 2 is grasped, so 2 is added to the starting memory address of KeyBoard to get "1".) It's not giving any errors with the code I have so far. Basically it does nothing though, and I did call it. Also, the inc AX was from the previous function that I copied that function from which I forgot to delete that line Embarassed.

Sorry for not getting back at you all sooner, and I hope you all can help and thanks for your input so far!
Post 07 Oct 2006, 22:21
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rugxulo



Joined: 09 Aug 2005
Posts: 2341
Location: Usono (aka, USA)
rugxulo
This:

Code:
KeyBoard db 0, 0, "1", "2", "3", "4"
    


... would look much nicer (IMO) as ...
Code:
KeyBoard db 0,0,'1234'
    


Plus, that line in your source code wouldn't be as long. Smile
Post 08 Oct 2006, 02:21
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rhyno_dagreat



Joined: 31 Jul 2006
Posts: 487
Location: Maryland, Unol Daleithiau
rhyno_dagreat
Thanks, I was wondering to myself if I could do that. But nonetheless, that still doesn't fix the problem.
Post 08 Oct 2006, 20:40
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Dex4u



Joined: 08 Feb 2005
Posts: 1601
Location: web
Dex4u
Here a fix ver of your code, that work fine on my OS (Dex4u)
Code:
;=========================================================;; Test CmdPrintFunc                              09/08/06 ;;---------------------------------------------------------;; By Dex4u.                                               ;;                                                         ;; c:\fasm test.asm test.dex                               ;;=========================================================;use32        ORG   0x400000          ; where our program is loaded to        jmp   start             ; jump to the start of program.        db    'DEX1'            ; We check for this, to make shore it a valid Dex4u file. ;----------------------------------------------------; ; Start of program.                                  ; ;----------------------------------------------------;start:        mov   ax,18h            ; set ax to nonlinear base        mov   ds,ax             ; add them to ds        mov   es,ax             ; and es. ;----------------------------------------------------; ; Get calltable address.                             ; ;----------------------------------------------------;        mov   edi,Functions     ; this is the interrupt        mov   al,0              ; we use to load the DexFunction.inc        mov   ah,0x0a           ; with the address to dex4u functions.        int   40h  ;----------------------------------------------------; ; Test code.                                         ; ;----------------------------------------------------;        call  CmdPrintFunc ;----------------------------------------------------; ; Exit.                                              ; ;----------------------------------------------------;          ret                     ; This returns to the CLI/GUI ;----------------------------------------------------; ; CmdPrintFunc.                                      ; ;----------------------------------------------------;CmdPrintFunc:        push es        mov ax,8h                          ; You should use 10h here        mov es,ax        mov edi, 0xB8000                ; screen pointer        add edi, 0x280                  ; Move 4 row down the screen        xor ebx, ebx                    ; Make sure ebx is 0        cmdloop:                call [WaitForKeyPress]  ; This gets scan code in AH                mov  bl,ah              ; Move scan code into BL                cmp  bl, 1Ch            ; Has enter bean pressed ?                je   done               ; Yes then jump exit                mov  esi,ebx                            mov  cl, [esi+KeyBoard]                mov  byte [es:edi],cl                inc  edi                mov  byte [es:edi], 1Bh                inc  edi                jmp  cmdloop   done:       pop  es       ret ;----------------------------------------------------; ; Data.                                              ; ;----------------------------------------------------;KeyBoard db 0, 0, "1", "2", "3", "4", "5", "6", "7", "8", "9"db       "0", "-", "=", 0, 0, "Q", "W", "E", "R", "T", "Y", "U"db        "I", "O", "P", "[", "]", 0, 0, "A", "S", "D", "F", "G"db         "H", "J", "K", "L", ";", "'", "`", 0, "\", "Z", "X", "C"db          "V", "B", "N", "M", ",", ".", "/", 0, "*", 0ScanCode db 0       include 'DexFunctions.inc'      ; Here is where we includ our "DexFunctions.inc" file    


Full code for above NOTE: Needs Dex4u OS.
http://www.dex4u.com/Redragon/test.zip
screenshot:
http://www.dex4u.com/Redragon/test.jpg
Post 08 Oct 2006, 22:37
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rhyno_dagreat



Joined: 31 Jul 2006
Posts: 487
Location: Maryland, Unol Daleithiau
rhyno_dagreat
Thanks for the code, I'm gonna try it ASAP. But one question that I have is in your code, you have:
Code:
mov  cl, [esi+KeyBoard]
    

And it (apparently, still haven't tested it) works, whereas I had
Code:
mov byte [ds:ebx], [Keyboard + al]
    

and it didn't work?
Post 09 Oct 2006, 00:38
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Dex4u



Joined: 08 Feb 2005
Posts: 1601
Location: web
Dex4u
You can not move from memory to memory
Post 09 Oct 2006, 01:14
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rhyno_dagreat



Joined: 31 Jul 2006
Posts: 487
Location: Maryland, Unol Daleithiau
rhyno_dagreat
Oh... Yeah... makes sense. It's like trying to take a warehouse that contains hardware and moving it to another warehouse. It's impossible for one human, and doesn't make much sense logically. So instead take the stuff inside the warehouse, load 'em up in trucks(registers) and ship 'em.

Thanks for your help!
Post 09 Oct 2006, 03:51
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Niels



Joined: 17 Sep 2006
Posts: 255
Niels
It is possible to move memory to memory with DMA, although not advisable, too slow. It depends on the warehouse(s) size, if it could be done, even by one human. Smile
Post 09 Oct 2006, 10:42
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Niels



Joined: 17 Sep 2006
Posts: 255
Niels
But fundamentally you're right; You can't put a register in a register other than passing its inner-information. You could say that mov al,5 mov ah,al uses only one 1 register ax. Smile
Post 09 Oct 2006, 10:54
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rhyno_dagreat



Joined: 31 Jul 2006
Posts: 487
Location: Maryland, Unol Daleithiau
rhyno_dagreat
Hey, I tried it, and how my OS works is that it boots up and says "Press 1 to Continue", and then after that happens, it clears the screen and the command line should come up, but what happens is after I press 1 to continue, it fills the screen with 1s and then I can't accept any more input. Confused
Post 09 Oct 2006, 21:03
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Dex4u



Joined: 08 Feb 2005
Posts: 1601
Location: web
Dex4u
We need to see the full code of your OS.
Post 10 Oct 2006, 00:19
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rhyno_dagreat



Joined: 31 Jul 2006
Posts: 487
Location: Maryland, Unol Daleithiau
rhyno_dagreat
Okay, here it goes:

rhynload.asm
Code:
;BOOTSTART
org 7C00h

jmp start

message db 'Loading RhynOS...',13,10,0

start:
        xor ax, ax
        mov ds, ax

        mov si, message
        call bios_print

load_os:
        mov ax, 0060h
        mov es, ax
        mov bx, 0000h
        mov ah, 02h
        mov al, 5
        mov ch, 0
        mov cl, 2
        mov dh, 0
        ;mov dl, 0  ; Not sure if needed, been told that dl already contains the drive that was booted on
        int 13h
        jmp 0060h:0000h

bios_print:
        lodsb
        or al, al
        jz done
        mov ah, 0x0E
        int 0x10
        jmp bios_print

done:
        call load_os

;BOOTEND
        times 510-($-$$) db 0
        dw 0xAA55                     
    


rhynos.asm
Code:
org 0000h
use16
cli

mov ax, 0060h
mov ds, ax
add dword [gdt_descriptor+2], 600h

lgdt [gdt_descriptor]

mov eax, cr0
or eax, 1
mov cr0, eax

jmp 08h:clear_pipe

gdt:
dd 0, 0
gdt_code:
db 0FFh, 0FFh, 0, 0, 0, 10011010b, 11001111b, 0
gdt_data:
db 0FFh, 0FFh, 0, 0, 0, 10010010b, 11001111b, 0
gdt_end:

gdt_descriptor:
    dw gdt_end - gdt - 1
    dd gdt

org 0600h+$
use32
clear_pipe:
mov ax, 10h
mov ds, ax
mov ss, ax

mov esp, 090000h

;ACTUAL KERNEL CODE STARTS HERE
mov si, WelMsg
call PrintFunc

call Reroute_PICs
lidt [idtp]
sti

GetInput:
        int 0x21
        cmp al, 02
        je DoClrScrn
        jmp GetInput

DoClrScrn:
        call ClrScrn

call CmdPrintFunc
;KERNEL CODE ENDS HERE
infinite_loop:
        jmp infinite_loop

times 571-($-$$) db 0
include 'interrupts.inc'
WelMsg db "Welcome to RhynOS! Press 1 To Continue.", 0             
    


interrupts.inc
Code:
;INTERRUPTS!!! YAY

PrintFunc:
        mov ax, 10h
        mov ds, ax
        mov ebx, 0B8000h
        strloop:
                lodsb
                mov byte [ds:ebx], al
                inc ebx
                mov byte [ds:ebx], 1Bh
                cmp ax, 0
                je done
                inc ebx
                inc ax
                jmp strloop

done:
        ret

ClrScrn:
        mov ax, 10h
        mov ds, ax
        mov ebx, 0B8000h
        mov ax, 0
        clrloop:
                cmp ax, 2000
                je done
                mov byte [ds:ebx], ' '
                inc ebx
                mov byte [ds:ebx], 1Bh
                inc ebx
                inc ax
                jmp clrloop

CmdPrintFunc:
        mov ax, 10h
        mov es, ax
        mov edi, 0B8000h
        xor ebx, ebx
        cmdloop:
                int 0x21
                mov bl, al
                cmp bl, 1Ch
                je done
                mov esi, ebx
                mov cl, [esi+KeyBoard]
                mov byte [ds:edi],cl
                inc edi
                mov byte [ds:edi], 1Bh
                inc edi
                jmp cmdloop

Reroute_PICs:
        ;send ICW1(Interrupt Control Word1)
        mov al, 11h
        ;out PIC1, ICW1
        out 20h, al
        ;out PIC2 ICW1
        out 0A0h, al

        ;send ICW2
        mov al, 20h
        ;out PIC1 + 1, IRQ0 start point
        out 21h, al
        mov al, 28h
        ;out PIC2 + 1, IRQ8 start point
        out 0A1h, al

        ;send ICW3
        ;IRQ2 to Connection to Slave PIC
        mov al, 04h
        out 21h, al
        mov al, 02h
        out 0A1h, al

        ;send ICW4
        mov al, 01h
        out 21h, al
        out 0A1h, al

        ;disable IRQs
        mov al, 0FFh
        out 021h, al
        ret

isr0:
        pusha
        push gs
        push fs
        push ds
        push es
        mov si, Err00
        call PrintFunc
        cli
        hlt
        pop es
        pop ds
        pop fs
        pop gs
        popa
        iret

isr1:
        pusha
        push gs
        push fs
        push ds
        push es
        mov si, Err01
        call PrintFunc
        cli
        hlt
        pop es
        pop ds
        pop fs
        pop gs
        popa
        iret

isr2:
        pusha
        push gs
        push fs
        push ds
        push es
        mov si, Err02
        call PrintFunc
        cli
        hlt
        pop es
        pop ds
        pop fs
        pop gs
        popa
        iret

isr3:
        pusha
        push gs
        push fs
        push ds
        push es
        mov si, Err03
        call PrintFunc
        cli
        hlt
        pop es
        pop ds
        pop fs
        pop gs
        popa
        iret

isr4:
        pusha
        push gs
        push fs
        push ds
        push es
        mov si, Err04
        call PrintFunc
        cli
        hlt
        pop es
        pop ds
        pop fs
        pop gs
        popa
        iret

isr5:
        pusha
        push gs
        push fs
        push ds
        push es
        mov si, Err05
        call PrintFunc
        cli
        hlt
        pop es
        pop ds
        pop fs
        pop gs
        popa
        iret

isr6:
        pusha
        push gs
        push fs
        push ds
        push es
        mov si, Err06
        call PrintFunc
        cli
        hlt
        pop es
        pop ds
        pop fs
        pop gs
        popa
        iret

isr7:
        pusha
        push gs
        push fs
        push ds
        push es
        mov si, Err07
        call PrintFunc
        cli
        hlt
        pop es
        pop ds
        pop fs
        pop gs
        popa
        iret

isr8:
        pusha
        push gs
        push fs
        push ds
        push es
        mov si, Err08
        call PrintFunc
        cli
        hlt
        pop es
        pop ds
        pop fs
        pop gs
        popa
        iret

isr9:
        pusha
        push gs
        push fs
        push ds
        push es
        mov si, Err09
        call PrintFunc
        cli
        hlt
        pop es
        pop ds
        pop fs
        pop gs
        popa
        iret

isr10:
        pusha
        push gs
        push fs
        push ds
        push es
        mov si, Err10
        call PrintFunc
        cli
        hlt
        pop es
        pop ds
        pop fs
        pop gs
        popa
        iret

isr11:
        pusha
        push gs
        push fs
        push ds
        push es
        mov si, Err11
        call PrintFunc
        cli
        hlt
        pop es
        pop ds
        pop fs
        pop gs
        popa
        iret

isr12:
        pusha
        push gs
        push fs
        push ds
        push es
        mov si, Err12
        call PrintFunc
        cli
        hlt
        pop es
        pop ds
        pop fs
        pop gs
        popa
        iret

isr13:
        pusha
        push gs
        push fs
        push ds
        push es
        mov si, Err13
        call PrintFunc
        cli
        hlt
        pop es
        pop ds
        pop fs
        pop gs
        popa
        iret

isr14:
        pusha
        push gs
        push fs
        push ds
        push es
        mov si, Err14
        call PrintFunc
        cli
        hlt
        pop es
        pop ds
        pop fs
        pop gs
        popa
        iret

isr15:
        pusha
        push gs
        push fs
        push ds
        push es
        mov si, Err15
        call PrintFunc
        cli
        hlt
        pop es
        pop ds
        pop fs
        pop gs
        popa
        iret

isr16:
        pusha
        push gs
        push fs
        push ds
        push es
        mov si, Err16
        call PrintFunc
        cli
        hlt
        pop es
        pop ds
        pop fs
        pop gs
        popa
        iret

isr17:
        pusha
        push gs
        push fs
        push ds
        push es
        mov si, Err17
        call PrintFunc
        cli
        hlt
        pop es
        pop ds
        pop fs
        pop gs
        popa
        iret

isr18:
        pusha
        push gs
        push fs
        push ds
        push es
        mov si, Err18
        call PrintFunc
        cli
        hlt
        pop es
        pop ds
        pop fs
        pop gs
        popa
        iret

isr19:
        pusha
        push gs
        push fs
        push ds
        push es
        mov si, ErrRes
        call PrintFunc
        cli
        hlt
        pop es
        pop ds
        pop fs
        pop gs
        popa
        iret

isr20:
        pusha
        push gs
        push fs
        push ds
        push es
        mov si, ErrRes
        call PrintFunc
        cli
        hlt
        pop es
        pop ds
        pop fs
        pop gs
        popa
        iret

isr21:
        pusha
        push gs
        push fs
        push ds
        push es
        mov si, ErrRes
        call PrintFunc
        cli
        hlt
        pop es
        pop ds
        pop fs
        pop gs
        popa
        iret

isr22:
        pusha
        push gs
        push fs
        push ds
        push es
        mov si, ErrRes
        call PrintFunc
        cli
        hlt
        pop es
        pop ds
        pop fs
        pop gs
        popa
        iret

isr23:
        pusha
        push gs
        push fs
        push ds
        push es
        mov si, ErrRes
        call PrintFunc
        cli
        hlt
        pop es
        pop ds
        pop fs
        pop gs
        popa
        iret

isr24:
        pusha
        push gs
        push fs
        push ds
        push es
        mov si, ErrRes
        call PrintFunc
        cli
        hlt
        pop es
        pop ds
        pop fs
        pop gs
        popa
        iret

isr25:
        pusha
        push gs
        push fs
        push ds
        push es
        mov si, ErrRes
        call PrintFunc
        cli
        hlt
        pop es
        pop ds
        pop fs
        pop gs
        popa
        iret

isr26:
        pusha
        push gs
        push fs
        push ds
        push es
        mov si, ErrRes
        call PrintFunc
        cli
        hlt
        pop es
        pop ds
        pop fs
        pop gs
        popa
        iret

isr27:
        pusha
        push gs
        push fs
        push ds
        push es
        mov si, ErrRes
        call PrintFunc
        cli
        hlt
        pop es
        pop ds
        pop fs
        pop gs
        popa
        iret

isr28:
        pusha
        push gs
        push fs
        push ds
        push es
        mov si, ErrRes
        call PrintFunc
        cli
        hlt
        pop es
        pop ds
        pop fs
        pop gs
        popa
        iret

isr29:
        pusha
        push gs
        push fs
        push ds
        push es
        mov si, ErrRes
        call PrintFunc
        cli
        hlt
        pop es
        pop ds
        pop fs
        pop gs
        popa
        iret

isr30:
        pusha
        push gs
        push fs
        push ds
        push es
        mov si, ErrRes
        call PrintFunc
        cli
        hlt
        pop es
        pop ds
        pop fs
        pop gs
        popa
        iret

isr31:
        pusha
        push gs
        push fs
        push ds
        push es
        mov si, ErrRes
        call PrintFunc
        cli
        hlt
        pop es
        pop ds
        pop fs
        pop gs
        popa
        iret

irq0:
        mov si, TimerEnabled
        call PrintFunc
        iret

irq1:
        in al, 60h
        iret

idt_start:

        ;Interrupt Example
        ; dw start_address
        ; dw code_selector where ISR is being held
        ; dw type_settings for ISRs
        ; dw start_address2(bits 31-16)
        ; start_address2 should be 0 because the
        ; start address should be no more than 1
        ; word value.


        ;FOR HISTORIC REFERENCE PURPOSES ONLY
        ;Original ISRS looked like the following
        ;
        ;dw 0x0000
        ;dw 0x08
        ;dw 0x8E00
        ;dw 0x08
        ;
        ;END OF HISTORIC REFERENCE

        ;SERVICE REQUEST INTS
        ;int0
        dw isr0
        dw 0x08
        dw 0x8E00
        dw 0x0
        ;int1
        dw isr1
        dw 0x08
        dw 0x8E00
        dw 0x0
        ;int2
        dw isr2
        dw 0x08
        dw 0xE00
        dw 0x0
        ;int3
        dw isr3
        dw 0x08
        dw 0x8E00
        dw 0x0
        ;int4
        dw isr4
        dw 0x08
        dw 0x8E00
        dw 0x0
        ;int5
        dw isr5
        dw 0x08
        dw 0x8E00
        dw 0x0
        ;int6
        dw isr6
        dw 0x08
        dw 0x8E00
        dw 0x0
        ;int7
        dw isr7
        dw 0x08
        dw 0x8E00
        dw 0x0
        ;int8
        dw isr8
        dw 0x08
        dw 0x8E00
        dw 0x0
        ;int9
        dw isr9
        dw 0x08
        dw 0x8E00
        dw 0x0
        ;int10
        dw isr10
        dw 0x08
        dw 0x8E00
        dw 0x0
        ;int11
        dw isr11
        dw 0x08
        dw 0x8E00
        dw 0x0
        ;int12
        dw isr12
        dw 0x08
        dw 0x8E00
        dw 0x0
        ;int13
        dw isr13
        dw 0x08
        dw 0x8E00
        dw 0x0
        ;int14
        dw isr14
        dw 0x08
        dw 0x8E00
        dw 0x0
        ;int15
        dw isr15
        dw 0x08
        dw 0xE00
        dw 0x0
        ;int16
        dw isr16
        dw 0x08
        dw 0xE00
        dw 0x0
        ;int17
        dw isr17
        dw 0x08
        dw 0xE00
        dw 0x0
        ;int18
        dw isr18
        dw 0x08
        dw 0xE00
        dw 0x0
       ;int19
        dw isr19
        dw 0x08
        dw 0xE00
        dw 0x0
       ;int20
        dw isr20
        dw 0x08
        dw 0xE00
        dw 0x0
       ;int21
        dw isr21
        dw 0x08
        dw 0xE00
        dw 0x0
       ;int22
        dw isr22
        dw 0x08
        dw 0xE00
        dw 0x0
       ;int23
        dw isr23
        dw 0x08
        dw 0xE00
        dw 0x0
       ;int24
        dw isr24
        dw 0x08
        dw 0xE00
        dw 0x0
       ;int25
        dw isr25
        dw 0x08
        dw 0xE00
        dw 0x0
       ;int26
        dw isr26
        dw 0x08
        dw 0xE00
        dw 0x0
       ;int27
        dw isr27
        dw 0x08
        dw 0xE00
        dw 0x0
       ;int28
        dw isr28
        dw 0x08
        dw 0xE00
        dw 0x0
       ;int29
        dw isr29
        dw 0x08
        dw 0xE00
        dw 0x0
       ;int30
        dw isr30
        dw 0x08
        dw 0xE00
        dw 0x0
       ;int31
        dw isr31
        dw 0x08
        dw 0xE00
        dw 0x0

       ;HARDWARE INTERRUPT REQUESTS
       ;int32
        dw irq0
        dw 0x08
        dw 0x8E00
        dw 0x0
       ;int33
        dw irq1
        dw 0x08
        dw 0x8E00
        dw 0x0

idt_end:

idtp:
        dw idt_end - idt_start - 1
        dd idt_start

TimerEnabled db "Timer Interrupt Enabled!", 0
Err00 db "Error 00 - Division By Zero",0
Err01 db "Error 01 - Debug",0
Err02 db "Error 02 - Non Maskable Interrupt",0
Err03 db "Error 03 - Breakpoint Exception",0
Err04 db "Error 04 - Into Detected Overflow",0
Err05 db "Error 05 - Out of Bounds",0
Err06 db "Error 06 - Invalid Opcode",0
Err07 db "Error 07 - No Coprocessor",0
Err08 db "Error 08 - Double Fault",0
Err09 db "Error 09 - Coprocessor Segment Overrun",0
Err10 db "Error 10 - Bad TSS",0
Err11 db "Error 11 - Segment Not Present",0
Err12 db "Error 12 - Stack Fault",0
Err13 db "Error 13 - General Protection Fault",0
Err14 db "Error 14 - Page Fault",0
Err15 db "Error 15 - Unknown Interrupt",0
Err16 db "Error 16 - Coprocessor Fault",0
Err17 db "Error 17 - Alignment Check",0
Err18 db "Error 18 - Machine Check",0
ErrRes db "Error - Reserved",0

KeyBoard db 0, 0, "1", "2", "3", "4", "5", "6", "7", "8", "9", "0", "-", "=", 0, 0, "Q", "W", "E", "R", "T", "Y", "U", "I", "O", "P", "[", "]", 0, 0, "A", "S", "D", "F", "G", "H", "J", "K", "L", ";", "'", "`", 0, "\", "Z", "X", "C", "V", "B", "N", "M", ",", ".", "/", 0, "*", 0
ScanCode db 0                                     
    
Post 10 Oct 2006, 00:28
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