...
 
Commits (2)
......@@ -21,9 +21,6 @@ mov dh, HEIGHT
mov dl, WIDTH
int 0x10
;; Turn on interrupts
sti
;; Set cursor to bottom of screen
mov dh, HEIGHT
mov dl, 0x00
......@@ -31,33 +28,10 @@ mov bh, 0x00
mov ah, 0x02
int 0x10
;; Start serial connection
mov ah, 0
mov al, 0b11100011
mov dx, 0
int 0x14
.loop:
;; Print a '.' to debug
mov ah, 0x01
mov al, '.'
mov dx, 0
int 0x14
;; Check status of COM1
mov ah, 0x03
mov dx, 0
int 0x14
;; If not ok, wait
and ah, 0x01
jz .loop
;; If ok, start reading character
mov ah, 0x02
mov dx, 0
int 0x14
;; Read character
mov ah, 0x00
int 0x16
cmp al, 0x0d ; newline
je .newline
......@@ -69,6 +43,18 @@ int 0x14
;; Read character
mov ah, 0x00
int 0x16
;; Read character is in al
sub al, 'a'
mov bl, al
shl bl, 0x4
;; Read character
mov ah, 0x00
int 0x16
;; Read character is in al
sub al, 'a'
or al, bl
mov [color_mode], al
jmp .loop
......@@ -98,11 +84,11 @@ int 0x14
.nonewline:
;; Write character
mov ah, 0x09
mov ah, 0x09
mov bh, 0x00
mov bl, [color_mode]
mov cx, 0x01
int 0x10
int 0x10
;; Get current cursor position
mov ah, 0x03
......@@ -142,7 +128,7 @@ int 0x14
halt: hlt
color_mode: db 0x05
color_mode: db 0x02
times 510 - ($ - $$) db 0
dw 0xAA55