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Intel 80386: Processors
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The third x86 generation of x86 microprocessors, Intel 80386 (i386) was a 32-bit microprocessor backwards compatible with previous generations of 80x86 CPUs. Major new feature in the i386 CPU was 80386 protected mode - this mode fixed many shortcomings that existed in the 80286 processor and in the 80286 protected mode:
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The INTEL 80386 CPU, or i386 for short, was at the heart of the PC's on which the first Linux systems were developed. The architecture of this CPU forms the basis for all subsequent 32-bit Intel processors (80486 Pentium, etc.) which are collectively know as the x86 family. This family of processors is the most common platform for Linux systems, but by no means the only or the best.
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The 80386 initially shipped at 16 MHz in October 1985, making it faster than any Intel version of the 80286. Although the 386 included the same addressing modes as the 8086 and 80286, it ... included new addressing modes, including one that emulated multiple 8086 processors and another that worked within a linear memory space. This architecture forms the foundation of all x86 processors since 1985.
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Intel 80386SX microprocessor was a cost-effective version of the 80386DX. The SX processor had 16-bit external data bus - this allowed the CPU to work with cheaper 16-bit hardware, but at the same time it made access to 32-bit memory data slower. The 80386SX ... had 24-bit address bus, which limited CPU's physical memory to 16 MB. Because the processor didn't work with 32-bit buses like the 80386DX, it didn't require as many signal pins. The 80386SX processors were manufactured in 100-pin package, or 32 pins less than the number of pins on DX package.
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Modern BlackBerry handhelds incorporate an ARM 7 or 9 processor, while older BlackBerry 950 and 957 handhelds used Intel 80386 processors. The latest GSM BlackBerry models (8100 and 8700 series) have an Intel PXA901 312 MHz processor, 64 MB flash memory and 16 MB SDRAM CDMA BlackBerry smartphones are based on Qualcomm MSM6x00 chipsets which ... include the ARM 9-based processor and GSM 900/1800 roaming(as the case with the 8830). The devices are very popular with some businesses, where they are primarily used to provide e-mail access to roaming employees. To fully integrate the BlackBerry into a company's systems, the installation of BlackBerry Enterprise Server (BES) is required.
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