AMD Confidential

User Manual

November 21st, 2008

Interrupt to task-gate is not implemented. An attempt to execute an interrupt to task-gate results in a „FeatureNotImplemented‟ exception and the simulation will be stopped.

When delivering an exception in an attempt to deliver a hardware interrupt the simulation will not push the resume-flag (RF) onto the stack.

Always clears VM, NT, TF, and RF bits in rFLAGS.

A.6.3.2 IRET – Return from Interrupt

Opcode

 

Instruction

 

Description

 

CF

 

IRET, IRETD,

 

Return from interrupt

 

 

IRETQ

 

 

 

 

 

 

 

 

 

 

 

 

 

The simulator does not support nested task-switching using the rFLAGS nested-task bit (NT) and the TSS back-link field. An interrupt return (IRET) to the previous task (nested- task) will result in a „FeatureNotImplemented‟ exception and the simulation will be stopped.

A.6.4

Virtualization Instruction Reference

For more information on Virtualization Technology, see AMD Publication #33047, AMD64 Virtualization Technology.

 

 

 

 

 

 

 

Instruction

 

 

 

Supported

 

 

Mnemonic

 

 

 

Opcode

 

 

Description

 

 

 

 

 

 

 

 

 

 

 

 

 

CLGI

 

 

0F

01

DD

 

 

Clear Global Interrupt Flag.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Invalidates the TLB mapping for the

 

INVLPGA

 

 

0F

01

DF

 

 

virtual page specified in rAX and the

 

 

 

 

 

 

 

 

 

 

ASID specified in ECX.

 

 

 

 

 

MOV reg32,CR8

 

 

F0

20

/r

 

 

Alternate notation for move from CR8 to

 

 

 

 

 

register.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MOV reg64,CR8

 

 

F0

20

/r

 

 

Alternate notation for

move

register to

 

 

 

 

 

CR8.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MOV CR8,reg32

 

 

F0

22

/r

 

 

Alternate notation for move from CR8 to

 

 

 

 

 

register.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

MOV CR8,reg64

 

 

F0

22

/r

 

 

Alternate notation for

move

register to

 

 

 

 

 

CR8.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SKINIT

 

 

0F

01

DE

 

 

Secure initialization

and

jump, with

 

 

 

 

 

attestation.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

STGI

 

 

0F

01

DC

 

 

Set Global Interrupt Flag.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VMLOAD

 

 

0F

01

DA

 

 

Load State from VMCB.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VMCALL

 

 

0F

01

D9

 

 

Call VMM.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VMRUN

 

 

0F

01

D8

 

 

Run Virtual Machine.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

VMSAVE

 

 

0F

01

DB

 

 

Save State to VMCB.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A.6.5 64-Bit Media Instruction Reference

These instructions described in this section operate on data located in the 64-bit MMX registers. Most of the instructions operate in parallel on sets of packed elements called vectors, although some operate on scalars. The instructions define both integer and floating-point operations, and include the legacy MMX instructions and the AMD extensions to the MMX instruction set.

 

 

 

 

 

Instruction

 

 

 

Supported

 

 

Mnemonic

 

 

Opcode

 

 

Description

 

 

 

 

 

 

 

 

 

 

 

 

Appendix A

223

Page 235
Image 235
AMD 4.4.5 user manual Virtualization Instruction Reference, 5 64-Bit Media Instruction Reference, 223

4.4.5 specifications

AMD 4.4.5 is a robust version of the AMD software ecosystem that focuses on enhanced performance, stability, and efficiency for users relying on AMD processors and graphics cards. This iteration brings various features and technologies designed to optimize gaming, professional applications, and general computing tasks.

One of the standout enhancements in AMD 4.4.5 is the integration of Smart Access Memory technology, which allows the CPU to access the full graphics memory directly. This feature enhances data flow between the CPU and GPU, leading to improved frame rates and overall performance, especially in memory-intensive games. Users can experience a marked increase in gaming performance without the need for additional hardware upgrades.

Another significant feature introduced is the updated Radeon Software Adrenalin Edition. This software update encompasses optimizations for various games, ensuring that gamers can enjoy a seamless experience with the latest titles. The Adrenalin interface also provides features such as Radeon Chill, which helps reduce power consumption during less demanding scenes, and Radeon Anti-Lag, designed to minimize input lag and enhance responsiveness in competitive gaming.

Additionally, AMD 4.4.5 brings the latest drivers that include important performance enhancements and bug fixes that allow for greater system stability. Regular updates ensure that users have the best experience with their AMD hardware, and it significantly bolsters compatibility with the latest gaming titles and software applications.

AMD's Enhanced Sync technology offers users the ability to eliminate screen tearing and stuttering while delivering smooth gameplay. It dynamically synchronizes the refresh rate of the display with the frame rates produced by the GPU, improving the visual experience significantly.

With the introduction of FidelityFX Super Resolution, AMD continues to bolster its suite of technologies that enhance graphics quality and performance. This feature allows lower-resolution images to be upscaled effectively, making it easier for users to enjoy high-end visuals without taxing their hardware excessively.

In summary, AMD 4.4.5 represents a comprehensive update for users by integrating cutting-edge technologies that cater to a wide range of applications from gaming to content creation. With enhancements across the board, AMD reaffirms its commitment to providing high-performance solutions that keep pace with the ever-evolving technology landscape. Whether for gaming aficionados or professional creators, the capabilities offered in this version make it a significant milestone in the AMD software ecosystem.