Western Electric 32100 (WE32100) was the second generation of WE32000
32-bit microprocessors. The 32100 had 32-bit address and data buses and
could address up to 4 GB physical and virtual memory. The 32100 was
object-code compatible with the 32000 CPU and included the following
improvements:
- The CPU was manufactured using more modern technology and was
running at higher frequencies - up to 18 MHz.
- The 32100 featured 256-byte level 1 instruction cache.
- The processor included co-processor interface to 32106 Math
Accelerator Unit (MAU). As part of this interface the CPU had 10
floating-point instructions that were used by the CPU to determine
the type and number of co-processor operands.
In addition to 32106 MAU, a WE32100 chipset included 5 other chips:
32101 Memory Management Unit, 32102 Clock, 32103 DRAM controller,
32104 DMA controller and 32105 System Interface Unit.
WE32100 CPU was used in AT&T 3B2 lines of computers and in 3B5
minicomputers. AT&T also offered WE 321SB single-board computer
with this CPU.
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