【正文】 ,88H MOV R1,04H MOV R2,00H MOV R3,04H MOV A,R0 MOV 9FH,A MOV A,R1 MOV 9EH,A MOV A,R0 AND A,7FH MOV R0,A MOV A,R1 AND A,7FH MOV R1,A MOV A,R1 SUB A,00H JZ OVERFLOW SHL R1 SHL R1 SHL R1 SHL R1 LOOP: MOV A,R0 SUB A,R1 MOV R0,A JZ NEXT AND A,80H SUB A,00H JZ S1 SUB A,80H JZ S2 S1: MOV A,R0 RL A MOV R0,A MOV A,R2 RL A ADD A,01H MOV R2,A MOV A,R3 SUB A,01H JZ NEXT MOV R3,A MOV A,R0 JMP LOOP S2: MOV A,R0 ADD A,R1 RL A MOV R0,A MOV A,R2 RL A MOV R2,A MOV A,R3 SUB A,01H JZ NEXT MOV R3,A MOV A,R0 JMP LOOP NEXT: MOV A,R0 AND A,80H SUB A,00H JZ OUT1 SUB A,80H JZ OUT2 OUT1: MOV A,R2 RL A ADD A,01H AND A,7FH MOV R2,ACY1: MOV A,R3 SUB A,01H MOV R3,A SHL R2 MOV A,R3 SUB A,00H JZ SS1 JMP CY1SS1: JMP F OUT2: MOV A,R2 RL A ADD A,00H AND A,7FH MOV R2,ACY2: MOV A,R3 SUB A,01H MOV R3,A SHL R2 MOV A,R3 SUB A,00H JZ SS2 JMP CY2SS2: JMP F F: MOV A,9FH AND A,80H MOV R0,A MOV A,9EH AND A,80H SUB A,R0 SUB A,00H JZ FF2 JMP FF1 FF1: MOV A,R2 OR A,80H MOV R2,A OUT JMP OVER FF2: MOV A,R2 OR A,00H MOV R2,A OUT JMP OVER OVER: JMP OVEROVERFLOW: END。A+R?RR A110100xx D0D3A不帶進位循環(huán)右移SUB A,II001111xx 3C3FIIA223。 實驗開始時將實驗數(shù)據(jù)從實驗箱的開關(guān)輸入到R0、RRR3四個寄存器中，部分積存放在R0，8位乘數(shù)放在R1,8位被乘數(shù)放在R2，R3控制乘數(shù)與被乘數(shù)都是8位數(shù)。這里提到個小的注意點，保存文件時不能直接寫完文件名就保存，cop2000這個軟件保存文件時需要填寫的是全稱，包括后綴名，這一點需要注意。通過本次課程設(shè)計，應(yīng)用《計算機組成原理》和實驗相關(guān)知識，完成了自建指令進行無符號四位乘法和除法的運行。FFF7F7CBFFFF+1+1寫入EM:08A:70SUB A,R1151D累加器A減去寄存器R1后存入累加器A，改變標志位FFF7EFFFFE91CBFFFF+1+1+1寫入EM:1DW:60D:10 A:10JC 1B16301B標志位Cy=1時跳轉(zhuǎn)至1BH處C6FFFFCBFFFF寫入+1+1寫入EM:30EM:1BMOV R0，A180C累加器A中的數(shù)送到寄存器R0中FFFB9FCBFFFF+1+1寫入EM:0CD:10 R0:10ADD R2,01191A01寄存器R2加上立即數(shù)01H存放至寄存器R2，改變標志位C7FFEFFFF7F7FFFA98CBFFFF+1+1+1+1+1寫入EM:1AEM:01 W:01A:0AD:0B R2:0BSUB R3，011B2301寄存器R3減去后立即數(shù)01H后存入寄存器R3，改變標志位FFF7F7C7FFEFFFFA99CBFFFF+1+1+1寫入+1EM:23A:01EM:01 W:01D:00 R3:00JZ 211D3421標志位Z=1時跳轉(zhuǎn)至21H處C6FFFFCBFFFF寫入+1+1寫入EM:34EM:21SHR R02128寄存器R0不帶進位右移1位，不改變標志位FFF7F7FFF9BFCBFFFF+1+1+1寫入EM:28A:10R:08 R0:08SHR R02228寄存器R0不帶進位右移1位，不改變標志位FFF7F7FFF9BFCBFFFF+1+1+1寫入EM:28A:08R:04 R0:04SHR R02328寄存器R0不帶進位右移1位，不改變標志位FFF7F7FFF9BFCBFFFF+1+1+1寫入EM:28A:04R:02 R0:02SHR R02428寄存器R0不帶進位右移1位，不改變標志位FFF7F7FFF9BFCBFFFF+1+1+1寫入EM:28A:02R:01 R0:01NOP253C無操作，取指令CBFFFF+1寫入EM：3C7．設(shè)計結(jié)果說明調(diào)試運行程序時是否出現(xiàn)問題，是否有重新調(diào)整指令/微指令系統(tǒng)設(shè)計的情況出現(xiàn)？請在此做具體說明。FFF7F7CBFFFF+1+1寫入EM:08A:43SUB A,R10D1D累加器A減去寄存器R1后存入累加器A，改變標志位FFF7EFFFFE91CBFFFF+1+1+1寫入EM:1DW:60D:E3 A:E3JC 120E3012標志位Cy=1時跳轉(zhuǎn)到12H地址C6FFFFCBFFFF寫入+1+1寫入EM:30EM:12 SHL R01224寄存器R0不帶進位左移1位，標志位不改變FFF7F7FFF9DFCBFFFF+1+1+1寫入EM:24A:43L:86 R0:86SHL R21326寄存器R2不帶進位左移1位，標志位不改變FFF7F7FFF9DFCBFFFF+1+1+1寫入EM:26A:00L:00 R2:00MOV A,R01408將寄存器R0中的數(shù)存放到累加器A中。FFF7F7FFF9DFCBFFFF+1+1+1寫入EM:25 EM:25 A:06L:0C R1:0CSHL R10925寄存器R1中的數(shù)不帶進位左移一位，標志位不改變。C7FBFFCBFFFF+1+1+1寫入EM:04EM:43 R0:43MOV R1,0BH020506將立即數(shù)06H存放到寄存器R1中。C6FFFFCBFFFF寫入+1+1寫入EM:38EM:06SUB R1,00H062100寄存器R1減去立即數(shù)00H后存入寄存器R1中，改變標志位FFF7F7C7FFEFFFFA99CBFFFF+1+1+1+1+1寫入EM:21EM:21 A:00EM:00 W:00D:00 R1:00JZ 15083415若零標志位Z=1，跳轉(zhuǎn)到15H地址。FFF7F7CBFFFF+1+1寫入EM:09EM:09 A:01AND A,01H0B4001累加器A中的數(shù)與立即數(shù)01H做與運算，結(jié)果存入累加器A中,標志位改變C7FFEFFFFE93CBFFFF+1+1+1+1寫入EM:40EM:01 W:01D:01 A:01SHR R10D29R1寄存器不帶進位左移一位，標志位不改變FFF7F7FFF9BFCBFFFF寫入+1+1+1寫入EM:29A:01R:00 R1:00JZ 120E3412若零標志位Z=1，跳轉(zhuǎn)到12H地址。FFF7F7FFF9DFCBFFFF+1+1+1寫入EM:16W:06D:12 R2:12SHL R01224寄存器R0中的數(shù)不帶進位左移一位，標志位不改變。C6FFFFCBFFFF寫入+1+1寫入EM:38EM:06SUB R1,00H062100寄存器R1減去立即數(shù)00H后存入寄存器R1中，改變標志位FFF7F7C7FFEFFFFA99CBFFFF+1+1+1+1+1寫入EM:21EM:21 A:02EM:00 W:00D:02 R1:02JZ 15083415若零標志位Z=1，跳轉(zhuǎn)到15H地址。FFF7F7CBFFFF+1+1寫入EM:09EM:09 A:05AND A,01H0B4001累加器A中的數(shù)與立即數(shù)01H做與運算，結(jié)果存入累加器A中,標志位改變C7FFEFFFFE93CBFFFF+1+1+1+1寫入EM:40EM:01 W:01D:01 A:01SHR R10D29R1寄存器不帶進位左移一位，標志位不改變FFF7F7FFF9BFCBFFFF寫入+1+1+1寫入EM:29A:05R:02 R1:02JZ 120E3412若零標志位Z=1，跳轉(zhuǎn)到12H地址。FFF7F7FFF9DFCBFFFF+1+1+1寫入EM:16W:0D:06 R2:06SHL R01224寄存器R0中的數(shù)不帶進位左移一位，標志位不改變。C7FBFFCBFFFF+1+1+1寫入EM:06EM:00 R2:00SUB