( ), 16/ 32 Intel 8086, Intel, , Intel8086 Intel I/ O,, ( CIP ) /,,. :, ( ) ISBN T P36 CIP ( 2002) 0

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矮娈弘
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2 ( ), 16/ 32 Intel 8086, Intel, , Intel8086 Intel I/ O,, ( CIP ) /,,. :, ( ) ISBN T P36 CIP ( 2002) : : : : * : : 174 ( A ) : : (023) : (023) : http: / /w ww.cqup.com.cn : fxk@ cqup.com.c n ( ) * : /16 : 24 : : I SBN / TP 317 : 28.00,

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12 1.2.2 (1 ),, 0, 1 8, D7, D6 D0, : D7 D6 D5 D4 D3 D2 D1 D0 1.1 X = + 65 : X = B, (2 ), 0, 1,, 1.2 X = + 97 [ X] = B X = - 97 [ X] = B 0 : [ + 0] = B [ - 0] = B n X : - 2 n X + 2 n n= 8, ,,,, (3 ),,,, , [ + 97 ] = B [ - 97 ] = B : [ + 0 ] = [ - 0 ] = n : - 2 n - 1 X + 2 n n= 8, , [ X], [ X] 3

13 [ X] : [ [ X] ] = [ X] [ X] = B [ X] = B [ [ X] ] = B = [ X] (4 ) : [ X + Y ] = [ X ] + [ Y ],, (, ), 1.5 : ( + 33) + ( + 15) ; ( + 33 ) + ( - 15 ) B [ + 33] B [ + 15 ] B [ + 48 ] B [ + 33 ] B [ - 15] B [ + 18] : [ X - Y ] = [ X] + [ - Y ], [ X - Y ] [ X] [ - Y ], [ - Y ] [ Y ] [ - Y ], [ Y ] ( ), 1 4

14 1.6 X - Y X = + 33 Y = + 15 [ X] = B [ Y ] = B [ - Y ] = B B [ X] B [ - Y ] B [ + 18] X = - 33 Y = - 15 [ X] = B [ Y ] = B [ - Y ] = B B [ X] B [ - Y ] B [ - 18 ],,,,,,, 8 16,, 0, 1, 8, [ + 46 ] = B, [ - 46] = B, 8 16, [ + 46] = B = 002EH [ - 46] = B = FFD2H (5 ),,,,, 1.7 8, ( + 88) + ( + 65) = > 127 ( + 88) - ( - 65) = > 127 ( - 83) - ( + 80) = < , : : (1 ), :, , ;, , 8 1.1,,, 5

15 x ( 2 7-1) x - ( 2 7-1) x (2 ) N : N = 2 E M, E, E = ej ek - 1 e0 ej : ej = 0, E ; ej = 1, E ek - 1 e0 M N, M = mj m1 mn mj : mj = 0, M ; m j = 1, M M N m1 mn N ej ek - 1 ek - 2 e0 mj m1 m2 mn (3 ), : mj m1, M ; mj = m1, M,, 1,, 1, mj m1,,,, 1/ 2 M < 1, N = ,, , , ,,, , 001, N ,, 6

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