; ( n1|u1 n2|u2 -- n3|u3 ) ; Arithmetics ; subtract n2 from n1 VE_MINUS: .dw $ff01 .db "-",0 .dw VE_HEAD .set VE_HEAD = VE_MINUS XT_MINUS: .dw PFA_MINUS PFA_MINUS: ld temp0, Y+ ld temp1, Y+ sub temp0, tosl sbc temp1, tosh movw tosl, temp0 jmp_ DO_NEXT