Assembler directives of 8086 microprocessor

Answer 1

the question is not clear.

the chip with which 8086 has to be interfaced should be mentioned.

for example, interfacing 8086 and 8087( NDP)

or 8086 and 8255( PPI)

or 8086 and 8259( PIC)

or 8086 and 8089( IOP)

But to make the answer complete I would like to mention 2 references

1.Douglas Hall, "Multiprocessors and Interfacing , Programming and

Hardware", Tata Mcgraw-Hill.1999, second edition.

2.John Uffenback, "8086/88 Interfacing, Programming and Design",

1987, PHI.

Answer 2

1

Assembler Directives (cont..)

ASSUME

DB - Defined Byte.

DD - Defined Double Word

DQ - Defined Quad Word

DT - Define Ten Bytes

DW - Define Word

Answer 3

http://en.wikipedia.org/wiki/X86_instruction_listings

http://www.chiplist.com/ISA/8086/

Answer 4

Different types of assembler directives are:

• define byte (DB)
• define double word(DD)
• define word (DW)
• end of segment (ENDS)

Answer 5

group of instructions several times repeated in the program

Answer 6

PASS, ASSUME, ENDM