AMD-K6-IIIE+550ACR AMD (ADVANCED MICRO DEVICES), AMD-K6-IIIE+550ACR Datasheet - Page 54

• Manufacturer Part Number: AMD-K6-IIIE+550ACR
• Manufacturer: AMD (ADVANCED MICRO DEVICES)

Specifications of AMD-K6-IIIE+550ACR

• Lead Free Status / RoHS Status: Not Compliant

AMD-K6™-IIIE+ Embedded Processor Data Sheet
Figure 11. Floating-Point Register
Figure 12. FPU Status Word Register
32
Sign
79
78
Symbol
B
C3
TOSP
C2
C1
C0
ES
SF
PE
UE
OE
ZE
DE
IE
Exponent
Precision Error
Underflow Error
Overflow Error
Zero Divide Error
Denormalized Operation Error 1
Invalid Operation Error
FPU Busy
Condition Code
Top of Stack Pointer
Condition Code
Condition Code
Condition Code
Error Summary Status
Stack Fault
000 = FPR0
111 = FPR7
Description
Exception Flags
TOSP Information
The eight floating-point registers are physically 80 bits wide
and labeled FPR0–FPR7. Figure 11 shows the format of the
floating-point registers. See “Floating-Point Register Data
Types” on page 34 for information on allowable floating-point
data types.
The 16-bit FPU status word register contains information about
the state of the floating-point unit. Figure 12 shows the format
of the FPU status word register.
64 63
Preliminary Information
Software Environment
13–11
Bits
15
14
10
9
8
6
5
4
3
2
0
7
15
B
14
C
3
13
TOSP
12
11
10
C
2
C
1
9 8
Significand
C
0
7
E
S
6
S
F
5
P
E
U
4
E
23543A/0—September 2000
O
3
E
Z
E
2
D
1
E
0
E
I
Chapter 3
0