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OVERVIEW OF THE 80C186 FAMILY ARCHITECTURE
2-38
Figure 2-23. 80C186 Modular Core Family Supported Data Types
15
+1
87
0
016
+2
23
24
+3
31
NOTE: *Directly supported if the system contains an 80C187.
15
14
+1
87
0
0
15
+1
87
0
0
7
0
7
0
BCD Digit n
BCD Digit 1
BCD Digit 0
0
ASCII Character n
ASCII Character 1
ASCII Character 0
15
+1
87
0
016
+2
2324
+3
31
+1
0
0
15
16
+2+3
31
32
+4
+5+6
+7
47
48
63
70
+n
70
+n
0
79
+9 +8 +7 +6 +5 +4 +3 +2 +1 +0
Most
Significant Digit
Least
Significant Digit
Byte Word n
Byte Word 1
Byte Word 0
+1
Signed Byte
Signed Quad
Word*
Unsigned
Word
Packed BCD
String
Pointer
ASCII
Floating
Point*
Binary Coded
Decimal (BCD)
Signed Word
Signed Double
Word*
Unsigned Byte
MSB
Sign Bit
Sign Bit
MSB
Sign Bit
Sign Bit
Sign Bit
70
+n
70
+n
7
0
70
MSB
MSB
MSB
7
0
7
0
0
+1
7
0
7
0
0
+1
7
0
7
0
0
+1
Magnitude
Exponent
Magnitude
Selector
Offset
Magnitude
Magnitude
Magnitude
Magnitude
Magnitude
A1027-0B