Changes between Version 34 and Version 35 of WikiStart

Timestamp:

May 9, 2009, 3:17:29 PM (15 years ago)

Author:

Mattia Monga

Comment:

--

WikiStart

@@ -13 +13 @@
 === Programmi ===
 
- * Accesso diretto alla macchina fisica `mioboot-nobios-simple.asm`
-{{{
-bits 16                         ; 16 bit real mode
-org 0x7C00                      ; origine indirizzo 0000:7C00
-
-start:  
- mov ax, 0xb800  ; text video memory
- mov ds, ax
- mov eax, 10
-write:
- cmp eax, 0
- jz end
- mov byte [eax], 'm'
- mov byte [eax+1], 0x0F    ; attrib = white on black
- sub eax, 2
- jmp write
-end:
- hlt
-
-times 510-($-$$) db 0 ; 0-padding 
-dw 0xAA55
-}}}
-{{{
-#!sh
-nasm -l mioboot-nobios-simple.lst -o mioboot-nobios-simple.img mioboot-nobios-simple.asm
-qemu mioboot-nobios-simple.img
-}}}
-
-
- * Uso dei servizi del BIOS `mioboot.asm`
-{{{
-bits 16                         ; 16 bit real mode
-org 0x7C00                      ; origine indirizzo 0000:7C00
-        
-start:
-        cld                     ; clears direction flag (index regs incremented)
-        mov si, boot
-        call message
-working:
-        mov si, work
-        call message
-
-        call waitenter
-        jmp working
-
-message:
-        lodsb                   ; carica un byte da [DS:SI] in AL e inc SI
-        cmp al, 0
-        jz done
-        mov ah, 0x0E            ; write char to screen in text mode
-        mov bx, 0               ; BH page number BL foreground color
-        int 0x10                ; write AL to screen (BIOS)
-        jmp message
-done:   ret
-
-boot: db "Loading unuseful system...." , 10, 13, 0
-work: db "I've done my unuseful stuff!" , 10, 13, 0 
-cont: db "Hit ENTER to continue...", 10, 13, 0
-wow: db "Great! Hello world!" , 10, 13, 0
-        
-waitenter: mov si, cont
-           call message
-           mov ah, 0
-           int 0x16                ; Wait for keypress (BIOS)
-           cmp al, 'm'
-           jz egg
-           cmp al, 'b'
-           jz basic
-           cmp al, 13
-           jnz waitenter
-           ret
-egg:       mov si, wow
-           call message
-           jmp waitenter
-basic:     int 0x18             ; basic (BIOS)
-           hlt
-
-        times 510-($-$$) db 0
-        dw 0xAA55
-}}}
+ * Accesso diretto alla macchina fisica source:trunk/mioboot-nobios-simple.asm
+ * Uso dei servizi del BIOS source:trunk/mioboot.asm
+
 {{{
 #!sh