第3章 80X86微处理器（国外英文资料）.docVIP

第3章 80X86微处理器（国外英文资料） The information that is worth having It comes from the general learning accumulation summary There must be a problem Please be critical! Chapter 3:80x86 microprocessors One, self-test practice problem Choice question Because 8086 cpus can be stored in an in-memory, dual address unit It can also be arranged in the odd address unit So its stack pointer, SP () A. it is best to point to the even address unit B. You can point to any address unit C. can only point to an even address d. can only point to the odd address The 2.8086/8088 microprocessors can calculate the addition of 20 physical addresses that access the internal memory (). A.A LU B. The c. instruction queue d. internal general purpose register The external data bus and the address bus of the 3.8086 CPU are () 16 A. 16 B. 16 16 C. D. 20 20 The address of the instruction code is in the register () A.D S and SI b.x and BP C.E S and DI d.c. S and IP In the biggest way The signal for the control bus comes from () A. 8282.8288 In 8086 6. A basic bus cycle consists of () a clock cycle A. one b. two c. three d. four 7. In the 8086 CPU Data address pins () are used for time-division reuse A.A D0 ~ AD15 B.A D0 ~ AD20 The 8.8086 CPU divides 1MB space into several logical segments Each segment contains the maximum () number of storage units A: A When the position OF position in the flag register is 1 The word that represents a symbol is beyond the data () range A. -128 - + 127. -32768 ~ + 32767 c.000 The bus write cycle In (), you do not need to maintain a cycle of empty states to buffer against a cycle A. -32767 ~ + 32767. -32767 ~ + 32768 C. -32768 ~ + 327667. -32766 ~ + 32769 The CPU executes the instructions BIU completes the access process for memory or I/O ports Its called () A. clock cycle b. bus cycle BHE and A0 cooperate to determine whether the data to access the memory is high byte or low byte work Its BHE is valid only in the period of the bus cycle () A.T, 1, t, 2, c, t, 3, D.T 4 The m