Arm!
This commit is contained in:
parent
c2a95c96d5
commit
6715d5c534
1 changed files with 386 additions and 22 deletions
|
|
@ -1,66 +0,0 @@
|
|||
SECTION .text
|
||||
USE16
|
||||
; provide function for printing in x86 real mode
|
||||
|
||||
|
||||
; a newline
|
||||
newline: db 0xD, 0xA, 0
|
||||
|
||||
; print a string and a newline
|
||||
; IN
|
||||
; si: points at zero-terminated String
|
||||
; CLOBBER
|
||||
; ax
|
||||
print_line:
|
||||
mov si, newline
|
||||
call print
|
||||
ret
|
||||
|
||||
; print a string
|
||||
; IN
|
||||
; si: points at zero-terminated String
|
||||
; CLOBBER
|
||||
; ax
|
||||
print:
|
||||
lodsb
|
||||
test al, al
|
||||
jz .done
|
||||
call print_char
|
||||
jmp print
|
||||
.done:
|
||||
ret
|
||||
|
||||
; print a character
|
||||
; IN
|
||||
; al: character to print
|
||||
; CLOBBER
|
||||
; ah
|
||||
print_char:
|
||||
mov ah, 0x0e
|
||||
int 0x10
|
||||
ret
|
||||
|
||||
; print a number in hex
|
||||
; IN
|
||||
; bx: the number
|
||||
; CLOBBER
|
||||
; cx, ax
|
||||
print_num:
|
||||
mov cx, 4
|
||||
.lp:
|
||||
mov al, bh
|
||||
shr al, 4
|
||||
|
||||
cmp al, 0xA
|
||||
jb .below_0xA
|
||||
|
||||
add al, 'A' - 0xA - '0'
|
||||
.below_0xA:
|
||||
add al, '0'
|
||||
|
||||
call print_char
|
||||
|
||||
shl bx, 4
|
||||
loop .lp
|
||||
|
||||
ret
|
||||
Loading…
Reference in a new issue