.define __send, __receive, __sendrec! See ../h/com.h for C definitionsSEND = 1RECEIVE = 2BOTH = 3SYSVEC = 32!*========================================================================*!                           _send and _receive                            *!*========================================================================*! _send(), _receive(), _sendrec() all save bp, but destroy ax, bx, and cx..extern __send, __receive, __sendrec__send:	mov cx,*SEND		! _send(dest, ptr)	jmp L0__receive:	mov cx,*RECEIVE		! _receive(src, ptr)	jmp L0__sendrec:	mov cx,*BOTH		! _sendrec(srcdest, ptr)	jmp L0  L0:	push bp			! save bp	mov bp,sp		! can't index off sp	mov ax,4(bp)		! ax = dest-src	mov bx,6(bp)		! bx = message pointer	int SYSVEC		! trap to the kernel	pop bp			! restore bp	ret			! return