stdlib segment para public 'slcode' assume cs:stdlib ; ; ; intersect- Intersects one set with another. ; ; inputs: ; ; ES:DI- Points at the destination set (at its mask byte). ; DX:SI- Points at the mask byte of the source set. ; ; ; public sl_intersect ; sl_intersect proc far push ds push ax push cx push si push di mov ds, dx ; mov al, es:[di] ;Get mask bytes not al mov ah, [si] add si, 8 ;Skip to start of set add di, 8 mov cx, 256 IsectLp: test ah, [si] jnz Next and es:[di], al Next: inc si inc di loop IsectLp ; pop di pop si pop dx pop cx pop ax pop ds ret sl_intersect endp ; ; stdlib ends end