cfenollosa_os-tutorial/05-bootsector-functions-strings/boot_sect_print.asm

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2014-10-05 10:54:46 +00:00
print:
pusha
; keep this in mind:
; while (string[i] != 0) { print string[i]; i++ }
; the comparison for string end (null byte)
start:
mov al, [bx] ; 'bx' is the base address for the string
cmp al, 0
je done
; the part where we print with the BIOS help
mov ah, 0x0e
int 0x10 ; 'al' already contains the char
; increment pointer and do next loop
add bx, 1
jmp start
done:
popa
ret