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有5级中断D1、D2、D3、D4和D5，中断屏蔽位“1”对应于开放，“0”对应于屏蔽，中断响应次序为D1→D2→D3→D4→D5，已知各中

断处理程序的中断级屏蔽位设置如下表所示。

中断响应次序	中断屏蔽位
D₁	D₂	D₃	D₄	D₅
D₁	0	0	0	0	0
D₂	1	0	1	1	1
D₃	1	0	0	0	0
D₄	1	O	1	0	1
D₅	1	0	1	0	0

有5级中断D1、D2、D3、D4和D5，中断屏蔽位“1”对应于开放，“0”对应于屏蔽，中断响应次序为

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更多“有5级中断D1、D2、D3、D4和D5，中断屏蔽位“1”对应…”相关的问题

第1题

8255A端口C按位置位/复位控制字的______位用来指定要置位或复位的端口C的具体位置。

A.D4、D5、D6

B.D1、D2、D3

C.D0、D1、D2

D.D5、D6、D7

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第2题

8255A的端口C按位置位/复位控制字的______位用来指定要置位或复位的端口C的具体位置。

A.D₄、D₅、D₆

B.D₁、D₂、D₃

C.D₀、D₁、D₂

D.D₅、D₆、D₇

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第3题

《上海期货交易所风险控制管理办法》规定，当某黄金期货合约连续3个交易日(即D1、D2、D3交易日)的累计涨跌幅(N)达到10％；或连续4个交易日(即D1、D2、D3、D4交易日)的累计涨跌幅(N)达到12％；或连续5个交易日(即D1、D2、D3、D4、D5交易日)的累计涨跌幅(N)达到14％时，交易所可以根据市场情况，采取()等措施。

A.对部分或全部会员、单边或双边、同比例或不同比例提高交易保证金

B.限期平仓

C.暂停部分会员或全部会员开新仓

D.调整涨跌停板幅度

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第4题

有4个中断源D1、D2、D3和D4，它们的中断优先级从高到低分别是1级、2级、3级和4级。即中断响应先后次序为1→2→3→4，

有4个中断源D₁、D₂、D₃和D₄，它们的中断优先级从高到低分别是1级、2级、3级和4级。即中断响应先后次序为1→2→3→4，现要求其实际的中断处理次序为4→3→2→1。

(1)写出这些中断源的正常中断屏蔽码和改变后的中断屏蔽码(令“0”对应于开放，“1”对应于屏蔽)。

(2)若在运行用户程序时，同时出现第1、2、3、4级中断请求，请画出此程序运行过程示意图。

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第5题

Spains King Juan Carlos, with 32 years on the【D1】______, turns 70 Saturday. But after year

s of undeniable adulation among Spaniards for【D2】______an attempted coup in 1981, hes recently faced more difficult times. Small groups of leftists have【D3】______his photo, and fiery【D4】______has also come from the right with one leading【D5】______ radio host calling for him to【D6】______. Juan Carlos【D7】______with a rare public defence of his【D8】______ in a recent speech. "Its been the longest period of stability and【D9】______ in Spain ever in a parliamentary 【D10】______, " the King said.

【D1】

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第6题

Britain has announced that it is to cancel about 200 million pounds worth of debts【D1】____

__ it by poorer Commonwealth countries. The International Development Secretary says the【D2】______ was being【D3】______ to countries committed to eliminating【D4】______ and【D5】______ good government This would include taking action against corruption. At the same time, Common Market【D6】______ ministers are meeting in Mauritius. Britain is expected to【D7】______ a fresh【D8】______ on reducing the debts of the poorest countries. The Chancellor of the Exchequer has indicated that he plans to【D9】______ a scheme put forward last year by the International【D10】______ Fund, which has not yet provided any relief.

【D1】

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第7题

Police in India have arrested a Citibank【D1】______ accused of cheating【D2】______ out of mi

llions of dollars. Shivraj Puri, 32, who was expected to appear in court later, told an Indian newspaper he was innocent. The【D3】______ fraud was discovered earlier this month in a【D4】______ of the global bank in Gurgaon, a【D5】______ suburb of Delhi. The bank has said【D6】______ were promised quick, high returns from a bogus【D7】______ scheme. It is alleged that Mr. Puri 【D8】______the money into【D9】______controlled by three relatives. Mr. Puri reportedly handed himself in on Thursday, a day after police said he was wanted for questioning. The alleged fraud came to light earlier this month when a client mentioned the scheme to a senior bank【D10】______.

【D1】

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第8题

On the 20th【D1】______ of the first official report on AIDS the head of the United Nations

AIDS programme warns the deadly disease may only be at its early stages in many parts of the world. Dr. Piot has said that the disease has already reached the【D2】______【D3】______ since first being【D4】______ in 1981. 58 million people world-wide have【D5】______ the HIV virus,which causes AIDS, while 22 million have 【D6】______related【D7】______. The UN estimates the worlds HIV-【D8】______ population at 36 million, including 25 million in Sub-Saharan Africa. International officials warned that the disease would have【D9】______ political, social and economic【D10】______ in many developing countries.

【D1】

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第9题

Canadian police and【D1】______teams were working Tuesday afternoon to【D2】______about 300 pe

ople stranded after what a local official termed the most【D3】______ storm to hit the Ontario 【D4】______in 25 years. Some people had been【D5】______their vehicles for more than 24 hours following blinding snow that【D6】______ so high it made it almost impossible to open vehicle doors. Ontario Provincial Police【D7】______reported about 360 vehicles and about 300 people had been stranded near Sarnia, Ontario, on Highway 402—a major【D8】______ linking the US-Canada 【D9】______to London, Ontario. Some of those people have since been rescued, but Sarnia Mayor Mike Bradley said it could be another 24 hours before everyone is taken to【D10】______.

【D1】

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