Intel 80286 manual Base Architecture, ·3 /80287 Supported Data Types

80286 BASE ARCHITECTURE

7		I I I1 I I	0
SI~~~~ II			I
SIGN BIT -lj			I
	MAGNITUDE
UNSI~~~~ I7	I I I I I II		0I
ILMSB			I
MAGNITUDE
1514 + 1 87				0	0
s~~~g II		Ii II II	IIi I IIi		I I
SIGN BIT -Ij		L- MSB			1

MAGNITUDE

31	+3		+2		1615	+ 1			0	0
SIGNED D~~~~ 11"		II II II I I II I I I Ii I III						I II II	III I I
SIGN BIT ...I IL MSB										1
			MAGNITUDE
+7		+6	+5	+4	+3		+2	+1	0
63			4847		3231			1615		0
SIGNED QUAD II
WORD'			I		I			I		I
SIGN BIT JIL MSB
			MAGNITUDE
~	+1		0	1I	0
UNS~~~g 1:1 I II 11I1 I II					1I
I	MSB				I
		MAGNITUDE
7	+N		0		7	+1		07	0	0
~~~~61'iiliijl					II ill Iii 11111"1					I

DECIMAL I..___-'.

(BCD) DI~7~N

7 +N 0

ASCIIIIIIIIIII

ASCII

CHARACTERN

7 +N 0I

PAC~~g II I I II I I

MOST

SIGNIFICANT DIGIT

I7/15+ N 0

STRING I II II III

BYTE/WORD N

	BCD		BCD
	DIGIT 1		DIGIT 0
7	+1	07		0	0
lilllllIlllIlllIl
	ASCII		ASCII
CHARACTER ,			CHARACTERO
7	+1	07		0	0
Ii Ii Iii i			II I I	I" i I
				LEAST
	SIGNIFICANT DIGIT
7/15+ 1		07/15		0	0
I I I I III		I II I I III I I
BYTE/WORD 1			BYTE/WORD 0

31 +3	+2	1615	+ 1		0	0
POINTER I I i I II I I II I I II		I I II	I I II	i I II	I I I 1 I I I
I						I
SELECTOR				OFFSET					'SUPPORTED BY
79 +9 +8 +7	+6 +5			+4	+3	+2 +1	0	0
FLOATING II									80287
								I	NUMERIC DATA
POINT'									CONFIGURATIONPROCESSOR
SIGN BIT ...II
EXPONENT			MAGNITUDE						G30108

Figure 2·3. 80286/80287 Supported Data Types

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