block SysArch
OS os_c;
WS ws_c;
WB wb_c;
connect(os_c.input1, ws_c.output1);
connect(os_c.output1, ws_c.input1);
connect(wb_c.input2, os_c.output2);
connect(wb_c.output2, os_c.input2);
end SysArch