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The MCST R500S (Russian: МЦСТ R500S) is a 32-bit system-on-a-chip, developed by Moscow Center of SPARC Technologies (MCST) and fabricated by TSMC.

MCST R500S Highlights

• implements the SPARC V8 instruction set architecture (ISA)
• dual-core
• the two cores can work in redundancy to increase reliability of the system.
• core specifications:
  • in-order, single-issue
  • 5-stage integer pipeline
  • 7-stage floating-point pipeline
  • 16 KB L1 instruction cache
  • 32 KB L1 data cache
• shared 512KB L2 cache
• integrated controllers:
  • memory
  • PCI
  • RDMA (to connect with other MCST R500S)
  • MSI (Mbus and SBus)
  • EBus
  • PS/2
  • Ethernet 100
  • SCSI-2
  • RS-232
• 500 МHz clock rate
• 130 nm process
• die size 100 mm
• ~45 million transistors
• power consumption 5W

References

• "https://web.archive.org/web/20151101211823/http://www.mcst.ru/b_18-19.shtml" (In Russian)

• SPARC microprocessors
• 32-bit microprocessors