!-u 1971
FFFF:1971 B80010            mov     ax, 1000
FFFF:1974 CD2F              int     2F
FFFF:1976 C3                retn

!-u 41D0
FFFF:41D0 55                push    bp
FFFF:41D1 8BEC              mov     bp, sp
FFFF:41D3 837E0400          cmp     word [bp+04], +00
FFFF:41D7 7502              jnz     41DB
FFFF:41D9 EB14              jmp     41EF
FFFF:41DB A09412            mov     al, [1294]
FFFF:41DE 98                cbw
FFFF:41DF 0BC0              or      ax, ax
FFFF:41E1 750C              jnz     41EF
FFFF:41E3 E88BD7            call    1971
FFFF:41E6 3CFF              cmp     al, FF
FFFF:41E8 7505              jnz     41EF
FFFF:41EA C606941201        mov     byte [1294], 01
FFFF:41EF A09412            mov     al, [1294]
!-
FFFF:41F2 98                cbw
FFFF:41F3 5D                pop     bp
FFFF:41F4 C20200            retn    0002