29 lines
384 B
ArmAsm
29 lines
384 B
ArmAsm
|
#
|
||
|
|
! $Source$
|
||
|
|
! $State$
|
||
|
|
! $Revision$
|
||
|
|
|
||
|
|
! Declare segments (the order is important).
|
||
|
|
|
||
|
|
.sect .text
|
||
|
|
.sect .rom
|
||
|
|
.sect .data
|
||
|
|
.sect .bss
|
||
|
|
|
||
|
|
.sect .text
|
||
|
|
|
||
|
|
! Say whether a file descriptor is ready for input, i.e. reading from the
|
||
|
|
! fd will immediately return something.
|
||
|
|
|
||
|
|
.define __sys_isreadyr
|
||
|
|
__sys_isreadyr:
|
||
|
|
mov bx, sp
|
||
|
|
mov ax, 0x4406
|
||
|
|
mov bx, 2(bx)
|
||
|
|
int 0x21
|
||
|
|
jnc ok
|
||
|
|
movb al, 0
|
||
|
|
ok:
|
||
|
|
cbw
|
||
|
|
ret
|