http://stinky/ece291/exam1/fundamental.html

Problem 1 : Fundamentals

Each row contains a 12-bit, 2's complement (signed) integer specified in hex, binary, or decimal.
Fill in the other columns of the same row with the same number.
The first row is given as an example.

Hex Binary Decimal

BAD 1011 1010 1101 -1107

(2 pts/each = 12 pts total)

Using the register values listed below, determine the linear memory address (or addresses)
of the byte or bytes read or written in each of the instructions.

Note that each problem can be solved independently
The first solution is given as an example

Reg. Value
(hex)

BX 2222

BP CADD

ES 1114

Reg. Value
(hex)

DI 3000

SI 0004

SS 5500

Reg. Value
(hex)

CS 2555

DS 1010

SP 1331

Instruction(s) Linear memory address(es)
written or read (Hex)

MOV AX , [SI]

ADD DL , [BX+DI]

SUB CX , [BP+2]

PUSH SI

XOR ES:[DI] , CL

(3 pts/each = 12 pts total)

Determine the Mode Byte for each of the following instructions.
If the instruction would be invalid on an Intel 8088 CPU, write 'Invalid'.

Instruction Mode Byte or 'Invalid'

__ __ __ __ __ __ __ __

__ __ __ __ __ __ __ __

(3 pts/each = 6 pts total)

Instruction(s)	Linear memory address(es) written or read (Hex)
MOV AX , [SI]
ADD DL , [BX+DI]
SUB CX , [BP+2]
PUSH SI
XOR ES:[DI] , CL

Hex	Binary	Decimal
`BAD`	`1011 1010 1101`	`-1107`

Instruction	Mode Byte or 'Invalid'
	`__ __ __ __ __ __ __ __`
	`__ __ __ __ __ __ __ __`