求做单片机毕业设计!!!

我给你写了几行:program:org 0000 hlj MP start org 000 BH ljmp t _ 0 org 0030h start:mov 30H,# 0fffhmov R3,# 04hsetb easetb et0mov tmod,# 01hmov th0,# 3chmov tl0,# 0 hsetb tr 0 main:MOV 31H,# 01 hlcall delay mov 365433