Fundamentals of Digital Logic and Microcomputer Design |
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Sayfa 10
In an AND operation , the output of the AND gate is one if all inputs are one ; the
output is zero if one or more inputs are zero . The OR gate , on the other hand ,
provides a zero output if all inputs are zero ; the output is one if one or more
inputs ...
In an AND operation , the output of the AND gate is one if all inputs are one ; the
output is zero if one or more inputs are zero . The OR gate , on the other hand ,
provides a zero output if all inputs are zero ; the output is one if one or more
inputs ...
Sayfa 396
This flag is used by BCD arithmetic instructions ; otherwise , AF is zero . CF (
carry flag ) is set if there is a carry from addition or a borrow from subtraction . OF
( overflow flag ) is set if there is an arithmetic overflow ( i . e . , if the size of the
result ...
This flag is used by BCD arithmetic instructions ; otherwise , AF is zero . CF (
carry flag ) is set if there is a carry from addition or a borrow from subtraction . OF
( overflow flag ) is set if there is an arithmetic overflow ( i . e . , if the size of the
result ...
Sayfa 411
6 8086 Signed and Unsigned Conditional Branch Instructions Name JE disp 8 (
JUMP if equal ) JNE disp8 ( JUMP if not equal ) JG disp8 ( JUMP if greater )
Signed Alternate Name JZ disp8 ( JUMP if result zero ) JNZ disp 8 ( JUMP if not
zero ) ...
6 8086 Signed and Unsigned Conditional Branch Instructions Name JE disp 8 (
JUMP if equal ) JNE disp8 ( JUMP if not equal ) JG disp8 ( JUMP if greater )
Signed Alternate Name JZ disp8 ( JUMP if result zero ) JNZ disp 8 ( JUMP if not
zero ) ...
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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