.sect .text; .sect .rom; .sect .data; .sect .bss .sect .text .define .sti .define .sts ! #bytes in cx ! address in bx ! save di/si. they might be register variables .sts: mov dx,di ! save di mov di,bx pop bx sar cx,1 jnb 1f pop ax stosb mov di,dx jmp bx .sti: ! only called with count > 4 mov dx,di mov di,bx pop bx sar cx,1 1: mov ax,si mov si,sp rep movs mov sp,si mov di,dx mov si,ax jmp bx