mirror of
https://github.com/deater/dos33fsprogs.git
synced 2024-11-16 23:20:43 +00:00
42 lines
661 B
ArmAsm
42 lines
661 B
ArmAsm
|
|
.globl _start
|
|
|
|
_start:
|
|
# mov $0x4f02,%ax # set super VGA mode
|
|
# mov $0x107,%bx # 1280x1024, 256 colors
|
|
# int $0x10 # set the mode
|
|
|
|
mov $0x04f,%ax
|
|
|
|
l108: shl %ax
|
|
push %cx
|
|
sub %dx,%cx
|
|
sar %cx
|
|
pop %di
|
|
add %di,%dx
|
|
sar %dx
|
|
rcr %ebp
|
|
jb l11f
|
|
inc %ax
|
|
add $0x3,%ch
|
|
neg %dx
|
|
l11f: aam $0x29
|
|
and $0xfc,%al
|
|
xor $0x12,%al
|
|
test $0x80,%dh
|
|
jne l108
|
|
test $0xf0,%ch
|
|
jne l108
|
|
put_pixel:
|
|
push %ax
|
|
and $0xf,%al # al = color
|
|
mov $0xc,%ah # ah = 0xc = putpixel
|
|
# int $0x10 # bh=page number, cx=x,dx=y
|
|
pop %ax
|
|
check_keyboard:
|
|
mov $0x1,%ah
|
|
# int $0x16
|
|
# je 0x108
|
|
# ret
|
|
jmp l108
|