Floating-Point Auxiliary Configuration Register (Faucr) - Texas Instruments TMS320C6000 Series Reference Manual

TMS320C67x Extensions to the Control Register File
2.7.2

Floating-Point Auxiliary Configuration Register (FAUCR)

Figure 2–8. Floating-Point Auxiliary Configuration Register (FAUCR)
Fields used by .S2
Fields used by .S1
2-16
The floating-point auxiliary register (FAUCR) contains fields that specify un-
derflow or overflow, the rounding mode, NaNs, denormalized numbers, and
inexact results for instructions that use the .S functional units. FAUCR has a
set of fields specific to each of the .S units, .S1 and .S2. Figure 2–8 shows the
layout of FAUCR. The functions of the fields in the FAUCR are shown in
Table 2–9.
31 27
26 25
Reserved DIV0 UNORD
R, +0
15 11
10 9
Reserved DIV0
UNORD
R, +0
Legend: R Readable by the MVC instruction
W Writeable by the MVC instruction
+0 Value is zero after reset
24 23 22 21
UND
INEX OVER INFO
R, W, +0
8 7 6 5
UND
INEX OVER INFO
R, W, +0
19
20 18
17
DEN1 NAN2
INVAL DEN2
3
4 2
DEN2 DEN1 NAN2
INVAL
16
NAN1
1 0
NAN1