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Numerous coprocessors were developed for the Tube. Most commonly seen was the 6502 Second Processor, featuring a MOS Technology 6502 processor, which allowed unmodified BBC Micro programs to run faster and with more memory, as long as they use the API for all I/O. [1] [2] The Z80 Second Processor featured a Zilog Z80 processor running CP/M, and the 32016 Second Processor featured a National ...
18 × 15 size grid removed from the center; Utilization of cam-actuated retention mechanism; The r in rPGA refers to reduced pitch which is 1 mm × 1 mm in this socket design. [4] rPGA 989 (as shown on the right) is a socket that can take Socket G1 (rPGA988A) or Socket G2 (rPGA988B) processors. Supported memory:
Interior of the 6502 Second Processor. The 6502 Second Processor (using a 6502C) was clocked at 3 MHz, a full 50% faster than the 6502 inside a BBC Model B, and also had 64 KB of RAM, of which typically 30–44 KB was free for application data (compared to as little as 8.5 KB on an unexpanded Model B in graphics mode, or only 5.75 KB with the disc interface).
The Ivy Bridge-EP processor line announced in September 2013 has up to 12 cores and 30 MB third level cache, with rumors of Ivy Bridge-EX up to 15 cores and an increased third level cache of up to 37.5 MB, [45] [46] although an early leaked lineup of Ivy Bridge-E included processors with a maximum of 6 cores.
COM-HPC Size D PICMG: 2020 160 × 160 mm (6.3 × 6.3 in) Used in embedded systems. Requires a carrier board. Typically used for COM-HPC Server Type modules with 4x full size DIMM memory sockets. COM-HPC Size E PICMG: 2020 200 × 160 mm (7.9 × 6.3 in) Used in embedded systems. Requires a carrier board.
Socket SP3 is a system in a package socket - that means most features required to make the system fully functional (such as memory, PCI Express, SATA controllers etc.) are fully integrated into the processor package, eliminating the need for a chipset to be placed on a motherboard. Variants for desktop platforms (as said below) are, eventually ...
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The processor must be in protection ring zero ("Ring 0") in order to initiate a microcode update. [21]: 1 Each CPU in a symmetric multiprocessing arrangement needs to be updated individually. [21]: 1 An update is initiated by placing its address in eax register, setting ecx = 0x79, and executing a wrmsr (Write model-specific register).