MDMX

	MDMX The MDMX (MIPS Digital Media eXtension), also known as MaDMaX, is an extension to the MIPS architecture released in October 1996 at the Microprocessor Forum. History MDMX was developed to accelerate multimedia applications that were becoming more popular and common in the 1990s on RISC and CISC systems. Functionality MDMX defines a new set of thirty-two 64-bit registers called media registers, which are mapped onto the existing floating-point registers to save hardware; and a 192-bit extended product accumulator. The media registers hold two new data types: octo byte (OB) and quad half (QH) that contain eight bytes (8-bit) and four halfwords (16-bit) integers. Variants of existing instructions operate on these data types, performing saturating arithmetic, logical, shift, compare and align operations. MDMX also introduced 19 instructions for permutation, manipulating bytes in registers, performing arithmetic with the accumulator, and accumulator access. References * Gwen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	MIPS Architecture MIPS (Microprocessor without Interlocked Pipelined Stages) is a family of reduced instruction set computer (RISC) instruction set architectures (ISA)Price, Charles (September 1995). ''MIPS IV Instruction Set'' (Revision 3.2), MIPS Technologies, Inc. developed by MIPS Computer Systems, now MIPS Technologies, based in the United States. There are multiple versions of MIPS: including MIPS I, II, III, IV, and V; as well as five releases of MIPS32/64 (for 32- and 64-bit implementations, respectively). The early MIPS architectures were 32-bit; 64-bit versions were developed later. As of April 2017, the current version of MIPS is MIPS32/64 Release 6. MIPS32/64 primarily differs from MIPS I–V by defining the privileged kernel mode System Control Coprocessor in addition to the user mode architecture. The MIPS architecture has several optional extensions. MIPS-3D which is a simple set of floating-point SIMD instructions dedicated to common 3D tasks, MDMX (MaDMaX) which is a more exten ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Microprocessor Report ''Microprocessor Report'' is a newsletter covering the microprocessor industry. The publication is accessible only to paying subscribers. To avoid bias, it does not take advertisements. The publication provides extensive analysis of new high-performance microprocessor chips. It also covers microprocessor design issues, microprocessor-based systems, memory and system logic chips, embedded processors, GPUs, DSPs, and intellectual property (IP) cores. History and profile ''Microprocessor Report'' was first published in 1987 by Michael Slater. Original board members included Bruce Koball, George Morrow, and J H Wharton all of whom served for many years. Originally published monthly in print, since 2000 it has been published weekly online and monthly in print. Slater left MicroDesign Resources (MDR), at the end of 1999. Typical articles describe the internal design and feature set of microprocessors from vendors such as Intel, Broadcom, and Qualcomm. The articles usually compare the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Saturating Arithmetic Saturation arithmetic is a version of arithmetic in which all operations, such as addition and multiplication, are limited to a fixed range between a minimum and maximum value. If the result of an operation is greater than the maximum, it is set (" clamped") to the maximum; if it is below the minimum, it is clamped to the minimum. The name comes from how the value becomes "saturated" once it reaches the extreme values; further additions to a maximum or subtractions from a minimum will not change the result. For example, if the valid range of values is from −100 to 100, the following ''saturating arithmetic operations'' produce the following values: 60 + 30 → 90. 60 + 43 → 100. (''not'' the expected 103.) (60 + 43) − (75 + 25) → 0. (''not'' the expected 3.) (100 − 100 → 0.) 10 × 11 → 100. (''not'' the expected 110.) 99 × 99 → 100. (''not'' the expected 9801.) 30 × (5 − 1) → 100. (''not'' the expected 120.) (30 × 4 → 100.) (30 × 5) − (30 × 1) � ... [...More Info...] [...Related Items...] OR:* [Wikipedia] [Google] [Baidu]