Table 20-10 Media And Vfp Feature Register 1 Bit Functions; Figure 20-9 Media And Vfp Feature Register 1 Format - ARM ARM1176JZF-S Technical Reference Manual

20.4.6 Media and VFP Feature Register 1
ARM DDI 0301H
ID012310
The purpose of the Media and VFP Feature Register 1 is to provide information about the
features that the VFP unit contains.
Media and VFP Feature Register 1 is:
• a 32-bit read-only register
• accessible in any mode when the VFP is enabled by the EN bit, see Floating-point
exception register, FPEXC on page 20-16
• accessible only in Privileged modes when the VFP is disabled by the EN bit.
Figure 20-9 shows the bit arrangement for Media and VFP Feature Register 1.
31
Table 20-10 shows how the bit values correspond with the Media and VFP Feature Register 1
functions.
Bits Name Function
[31:12] - Reserved
UNP/SBZ.
[11:8] - Indicates support for media extension, single precision floating point instructions.
, no support in ARM1176JZF-S processors.
0x0
[7:4] - Indicates support for media extension, integer instructions.
, no support in ARM1176JZF-S processors.
0x0
[3:0] - Indicates support for media extension, load/store instructions.
, no support in ARM1176JZF-S processors.
0x0
The values in the Media and VFP Feature Register 1 are implementation defined.
Copyright © 2004-2009 ARM Limited. All rights reserved.
Non-Confidential, Unrestricted Access
-

Figure 20-9 Media and VFP Feature Register 1 format

Table 20-10 Media and VFP Feature Register 1 bit functions

VFP Programmer's Model
12 11 8 7 4
- -
3 0
-
20-20