MODEL SMALL STACK 256 DATA BCD BUF DB 79H ASC_BUF DB 2 DUP() CODE STARTUP MOV AL, BCD BUF MOV BL, AL MOV CL, 4 SHR AL, CL ADD AL, 30H MOV ASC BUF, AL and BL, OFH ADD BL, 30H MOV ASC BUF+1, BL EXIT O END.MODEL SMALL .STACK 256 .DATA BCD_BUF DB 79H ASC_BUF DB 2 DUP (?) .CODE .STARTUP MOV AL，BCD_BUF MOV BL，AL MOV CL，4 SHR AL，CL ADD AL，30H MOV ASC_BUF，AL AND BL，0FH ADD BL，30H MOV ASC_BUF+1，BL .EXIT 0 END