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In 2013 Asus restarted the Eee PC series [24] with the 1015E models, some of which are on Windows 8 and some on Ubuntu Linux. These come with 2 GB memory and USB3 ports. The 1015E fixes some of the problems with the 1025C by using a faster processor, 2GB memory and stereo speakers. The RAM is soldered in place and cannot be upgraded.
SoftRAM and SoftRAM95 were system software products that claimed to increase or even double the available random-access memory in Microsoft Windows without the need for a hardware upgrade, which is theoretically possible using memory compression. However, it later emerged that the program did not have any actual compression algorithm. [1]
For example, an upgrade of RAM may not be compatible with existing RAM in a computer. Other hardware components may not be compatible after either an upgrade or downgrade, due to the non-availability of compatible drivers for the hardware with a specific operating system. Conversely, there is the same risk of non-compatibility when software is ...
Nonvolatile BIOS memory refers to a small memory on PC motherboards that is used to store BIOS settings. It is traditionally called CMOS RAM because it uses a volatile, low-power complementary metal–oxide–semiconductor (CMOS) SRAM (such as the Motorola MC146818 [1] or similar) powered by a small battery when system and standby power is off. [2]
Opler projected that fourth-generation computer systems would have a writable control store (a small specialized high-speed memory) into which microcode firmware would be loaded. Many software functions would be moved to microcode, and instruction sets could be customized, with different firmware loaded for different instruction sets. [3]
This method uses two memory accesses (one for the page-table entry, one for the byte) to access a byte. First, the page table is looked up for the frame number. Second, the frame number with the page offset gives the actual address. Thus, any straightforward virtual memory scheme would have the effect of doubling the memory access time.
The second generation Tegra SoC has a dual-core ARM Cortex-A9 CPU, an ultra low power (ULP) GeForce GPU, [17] a 32-bit memory controller with either LPDDR2-600 or DDR2-667 memory, a 32 KB/32 KB L1 cache per core and a shared 1 MB L2 cache. [18] Tegra 2's Cortex A9 implementation does not include ARM's SIMD extension, NEON. There is a version of ...
Overlaying is a programming method that allows programs to be larger than the computer's main memory. [2] An embedded system would normally use overlays because of the limitation of physical memory, which is internal memory for a system-on-chip, and the lack of virtual memory facilities.
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