13.12, The x86 architecture includes an instruction called Decimal Adjust after Addition (DAA). DAA performs the following sequence of instructions: it ((AL AND OFH) >9) OR (AF - 1) then AL - AL + 6: AF - 1; else AF d 0: endit: if (AL > 9FH) OR (CF - 1) then AL- AL + 60N CF- 11 else CF - 01 "H" indicates hexadecimal. AL is an 8-bit register that holds the results of addition of two unsigned 8-bit integers. AF is a flag set if there is a carry from bit 3 to bit 4 in the result of an addition. CF is a flag set if there is a carry from bit 7 and bit 8. Explain the function performed by the DAA instruction.
13.12, The x86 architecture includes an instruction called Decimal Adjust after Addition (DAA). DAA performs the following sequence of instructions: it ((AL AND OFH) >9) OR (AF - 1) then AL - AL + 6: AF - 1; else AF d 0: endit: if (AL > 9FH) OR (CF - 1) then AL- AL + 60N CF- 11 else CF - 01 "H" indicates hexadecimal. AL is an 8-bit register that holds the results of addition of two unsigned 8-bit integers. AF is a flag set if there is a carry from bit 3 to bit 4 in the result of an addition. CF is a flag set if there is a carry from bit 7 and bit 8. Explain the function performed by the DAA instruction.
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Quiz 7
13.12
aaand abet pat aluan
The x86 architecture includes an instruction called
Decimal Adjust after Addition (DAA). DAA performs the
following sequence of instructions:
13.6
Compere lere, one tw d hree addess machines b
amte compute
(A xC)(D-EXF
For each of the feur machines The insructions avalable
if ((AL AND OFH) >9) OR (AF = 1) then
AL - AL + 6;
AF - 1;
13.7
else
Coniderahypethetical computer with an intruction set of only twen
DE UI he he eredm and the remaning
sturtn dn o w mamenery The two
etat t
AF d 0;
endif;
if (AL > 9FH) OR (CF = 1) then
tepan
AL - AL + 60H;
CF - 1;
else
CF - 0;
"H" indicaf
hexadecimal. AL is an 8-bit register that holds the results of
addition of two unsigned 8-bit integers. AF is a flag set if there is a carry from
bit 3 to bit 4 in the result of an addition. CF is a flag set if there is a carry from
bit 7 and bit 8. Explain the function performed by the DAA instruction.
13.12
The archtecture includes an inatruction called
mal Aaae after Addiion (DAA DAA perfarm the
rasaa tengaw uade
a t d g a fg ut yon
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