Fundamentals of Digital Logic and Microcomputer Design |
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Sayfa 235
To execute the instruction , the microprocessor normally places the PC contents
on the address bus and reads ( fetches ) the first instruction from external memory
. The program counter contents are then automatically incremented by the ALU .
To execute the instruction , the microprocessor normally places the PC contents
on the address bus and reads ( fetches ) the first instruction from external memory
. The program counter contents are then automatically incremented by the ALU .
Sayfa 236
Read the 16 - bit contents of the memory location addressed by MAR into data
register , DO . 3 . Increment MAR by 2 to hold 2012 , the address of the second
data to be added . 4 . Add the current contents of data register , DO to the
contents of ...
Read the 16 - bit contents of the memory location addressed by MAR into data
register , DO . 3 . Increment MAR by 2 to hold 2012 , the address of the second
data to be added . 4 . Add the current contents of data register , DO to the
contents of ...
Sayfa 389
If the 20 - bit address START is an even number such as 0221216 , then this
instruction loads the low ( AL ) and high ( AH ) bytes of the 8086 16 - bit register
AX with the contents of memory locations 0221216 and 0221316 , respectively ,
in a ...
If the 20 - bit address START is an even number such as 0221216 , then this
instruction loads the low ( AL ) and high ( AH ) bytes of the 8086 16 - bit register
AX with the contents of memory locations 0221216 and 0221316 , respectively ,
in a ...
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İçindekiler
NUMBER SYSTEMS AND CODES | 31 |
BOOLEAN ALGEBRA AND DIGITAL LOGIC GATES | 67 |
SEQUENTIAL LOGIC DESIGN | 171 |
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addition address register addressing modes assembly asserted Assume base basic binary bits block branch byte cache called carry chip circuit clear clock combinational complement condition connected consider contains contents converter counter cycle decoder determine device diagram digits displacement effective enable example exception execution external field Figure flags flip-flop four function gate hardware HIGH immediate implemented indicates indirect Initialize input instruction interface interrupt K-map language lines loaded logic main memory means memory microcomputer microprocessor mode MOVE multiplication Note obtained offset operand operation output Pentium perform pins placed pointer port processing processor reset result segment sequence shift shown in Figure shows signal signed specified stack starting stored transfer typical unit vector Write zero