AM186ES Advanced Micro Devices, AM186ES Datasheet - Page 31

• Manufacturer Part Number: AM186ES
• Description: microcontrollers provide a low-cost/ high-performance solution for embedded system designers who wish to use the x86 architecture.
• Manufacturer: Advanced Micro Devices

Figure 2-5
Unsigned
Unsigned
Double
Signed
Signed
Signed
Signed
Sign Bit
Sign Bit
Sign Bit
Sign Bit
Word
Word
Quad
Word
Word
Byte
Byte
15 14
Magnitude
31
63
15
7
7
In general, individual data elements must fit within defined segment limits. Figure 2-5
graphically represents the data types supported by the Am186ES and Am188ES
microcontrollers.
Supported Data Types
Magnitude
MSB
MSB
Magnitude
MSB
Magnitude
Magnitude
+7
+1
Pointer—A 16-bit or 32-bit quantity, composed of a 16-bit offset component or a 16-bit
segment base component in addition to a 16-bit offset component.
String—A contiguous sequence of bytes or words. A string can contain from 1 byte up
to 64 Kbytes.
+1
MSB
+3
MSB
Magnitude
0
8 7
48 47
0
+6
+2
0
0
+5 +4
1615
32 31
0
0
+1
+3 +2 +1
16 15
0
0
+0
0
Programming
Decimal
Packed
Pointer
Binary
Coded
(BCD)
String
ASCII
BCD
Byte/WordN
7
Most Significant
Digit
Character
7
7
7
Digit N
Segment Base
BCD
ASCII
+N
+N
+N
+N
+3
0
0
0
0
N
. . .
. . .
. . .
. . .
+2
Character
Byte/Word1 Byte/Word0
7
7
7
7
Digit 1
BCD
ASCII
+1
+1
Significant Digit
+1
+1
+1
1
Offset
0
0
0
0 7
7
Digit 0
7
7
ASCII
Character
BCD
0
0
0
0
0
Least
0
0
0
0
0
2-9