MODEL SMALL STACK DATA X DW-78 D7865 RESULT DW CODE STARTUP MOV AX, X SUb AX, Y JGE GREATERZERO;AX≥Y?,跳转 NEG AX ;求补,得到副值 GREATERZERO MOV RESULT,AⅩ EXIT O END.MODEL SMALL .STACK .DATA X DW -78 Y DW 7865 RESULT DW ? .CODE .STARTUP MOV AX，X SUB AX，Y JGE GREATERZERO ；AX≥Y ? ，跳转 NEG AX ；求补，得到副值 GREATERZERO： MOV RESULT，AX .EXIT 0 END