Assembler Answers

In 8087 math co-processors, what is the bias for a double precision floating point

representation? Demonstrate the conversion of a 64 bit floating point number into

corresponding decimal value.

What is a descriptor in 80286 microprocessors? Write how the size of a memory

segment is determined during real mode memory addressing and during protected mode

memory addressing.

What is a descriptor in 80286 microprocessors? Write how the size of a memory

segment is determined during real mode memory addressing and during protected mode

memory addressing.

In 8087 math co-processors, what is the bias for a double precision floating point
representation? Demonstrate the conversion of a 64 bit floating point number into
corresponding decimal value.

Suppose, DS= 1015 H, BX= 1015 H, DI= 15 H, Table= 15H. Then, calculate the
physical address of the source for the following instruction in real mode:
MOV AX, Table[BX+ DI].

Show how array data can be located using base-plus-index addressing.

Suppose, DS= 1015 H, BX= 1015 H, DI= 15 H, Table= 15H. Then, calculate the
physical address of the source for the following instruction in real mode:
MOV AX, Table[BX+ DI].

Write and run a 8086 Assembly language program that converts a three digit ASCII number

stored in three consecutive byte locations in the memory, into a binary number. The output

should be stored in DX register.

Write and run (using appropriate calling program) a near procedure in 8086 assembly
language, which is passed a single parameter by the calling program. The procedure
checks if the input parameter has a value zero or not. If the value of input parameter is
zero then procedure/program is terminated, otherwise a value of 1 is returned to the
calling program, which then continue to execute the remaining program. Make and state
suitable assumptions, if any.

Each part of this problem addresses an aspect of computer organization.
a. List the components that are part of the CPU.
b. List the components that are part of the system bus.
c. Reorder the list of data storage elements below according to computer system
memory hierarchy, from closest to the CPU to farthest from the CPU.
hard disk, level 1 cache, DVD ROM, level 2 cache, registers, level 3 cache, and
main memory