计算机等级考试三级PC技术上机10

2013年计算机等级考试三级PC技术上机（10）请编制程序，其功能是：计算10个有符号字节数据的绝对值之和(字型)，并找出绝对值最大的数及其所在的偏移地址，最后将它们依次存入指定的内存中，结果以FFH结束。例如：内存中有 10H,01H,27H,00H,FEH,80H,00H,03H,FFH,01H结果为 BFH,00H,80H,05H,00H,FFH部分程序已给出, 其中原始数据由过程LOAD从文件INPUT1.DAT中读入SOURCE开始的内存单元中。运算结果要求从RESULT开始存放,由过程SAVE保存到文件OUTPUT1.DAT中。填空BEGIN和END之间已给出的一段源程序使其完整(空白已用横线标出,每行空白一般只需一条指令, 但采用功能相当的多条指令亦可),或删除BEGIN和END之间原有的代码并自行编程来完成要求的功能。对程序必须进行汇编,并与IO.OBJ链接产生PROG1.EXE执行文件,最终运行程序产生结果(无结果或结果不正确者均不得分)。调试中若发现整个程序中存在错误之处, 请加以修改。试题程序：EXTRN LOAD:FAR,SAVE:FARN EQU 10DSEG SEGMENTSOURCE DB N DUP(?)RESULT DB 6 DUP(0)MAX DB ?NAME0 DB 'INPUT1.DAT',0NAME1 DB 'OUTPUT1.DAT',0DSEG ENDSSSEG SEGMENT STACKDB 256 DUP(?)SSEG ENDSCSEG SEGMENTASSUME CS:CSEG,SS:SSEG,DS:DSEGSTART PROC FARPUSH DSXOR AX,AXPUSH AXMOV AX,DSEGMOV DS,AXMOV ES,AX ;置附加段寄存器LEA DX,SOURCE ;数据区起始地址LEA SI,NAME0 ;原始数据文件名MOV CX,N ;字节数CALL LOAD ;从'INPUT1.DAT'中读取数据;*BEGIN*LEA SI,SOURCELEA DI,RESULTMOV DX,SIMOV CX.N-1MOV AL,SIADD AL,0JNS P1_P1: MOV MAX,ALADD DI,AL_GOON: INC SIMOV AL,SIADD AL,0JNS P2NEG ALP2: ADD DI,AL_CMP MAX,ALJAE _MOV MAX,ALMOV DX,SINEXT: LOOP GOONADD DI,2MOV AL,MAXMOV DI,ALINC DIMOV DI,DXADD DI,2MOV BYTE PTR DI,_;*END*LEA DX,RESULT ;结果数据区首址LEA SI,NAME1 ;结果文件名MOV CX,6 ;字节数CALL SAVE ;保存结果到文件RETSTART ENDPCSEG ENDSEND 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