Ultra Port Architecture

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UPA bus on an Ultra 1 Creator

The Ultra Port Architecture (UPA) bus was developed by Sun Microsystems as a high-speed graphics card to CPU interconnect, beginning with the Ultra 1 workstation in 1995.

External links

[edit]

UPA Bus Whitepaper

v t e Technical and de facto standards for wired computer buses
General	System bus Front-side bus Back-side bus Daisy chain Control bus Address bus Bus contention Bus mastering Network on a chip Plug and play Double data rate Quad data rate List of bus bandwidths
Standards	SS-50 bus S-100 bus Multibus Unibus VAXBI MBus STD Bus SMBus Q-Bus Europe Card Bus ISA STEbus Zorro II Zorro III CAMAC FASTBUS LPC HP Precision Bus EISA VME VXI VXS VPX NuBus TURBOchannel MCA SBus VLB HP GSC bus InfiniBand Ethernet UPA PCI PCI Extended (PCI-X) PXI PCI Express (PCIe) AGP Compute Express Link (CXL) Direct Media Interface (DMI) RapidIO Intel QuickPath Interconnect NVLink HyperTransport Infinity Fabric Intel Ultra Path Interconnect Coherent Accelerator Processor Interface (CAPI) SpaceWire
Storage	ST-506 ESDI SDI IPI SMD Floppy connector Parallel ATA (PATA) Bus and Tag DSSI HIPPI Serial ATA (SATA) SCSI Parallel SAS ESCON Fibre Channel SSA SATAe PCI Express (via AHCI or NVMe logical device interface)
Peripheral	Apple Desktop Bus Atari SIO DCB Commodore bus HP-IL HIL MIDI RS-232 RS-422 RS-423 RS-485 Lightning DMX512-A IEEE-488 (GPIB) IEEE-1284 (parallel port) IEEE-1394 (FireWire) UNI/O 1-Wire I²C (ACCESS.bus, PMBus, SMBus) I3C SPI D²B Parallel SCSI Profibus USB Camera Link External PCIe Thunderbolt CAN bus
Audio	ADAT Lightpipe AES3 Intel HD Audio I²S MADI McASP S/PDIF TOSLINK
Portable	PC Card ExpressCard
Embedded	Multidrop bus CoreConnect AMBA (AXI) Wishbone SLIMbus
Interfaces are listed by their speed in the (roughly) ascending order, so the interface at the end of each section should be the fastest. Category

Sun Microsystems

Acquired by Oracle Corporation

Hardware

Systems	SUN workstation Sun-1 Sun-2 Sun-3 Sun386i Sun-4 SPARCstation–server–center 1 2 4 5 10 20 classic IPC IPX LX ZX Netra Ultra 1 2 5 10 24 30 60 80 Enterprise 10000 Blade server Blade workstation Fire 12K 15K E25K T2000 X4500 SPARC Enterprise JavaStation Java Workstation Ray Cobalt Qube Cobalt RaQ
Processors	SPARC MB86900 microSPARC SuperSPARC UltraSPARC UltraSPARC II UltraSPARC IIe UltraSPARC IIi Gemini UltraSPARC III UltraSPARC III Cu UltraSPARC IIIi UltraSPARC IV UltraSPARC T1 UltraSPARC T2 SPARC T3 SPARC T4 SPARC T5 Rock MAJC
Sun4d SBus Fireplane LOM port MBus Modular Datacenter Neptune System Service Processor SPARC T series SPOT Ultra Port Architecture Visual Instruction Set

Software

Storage

Performance

Research

Education

Acquisitions

Slogans

Community

Common Development and Distribution License Java Community Process NetBeans OpenOffice.org OpenSolaris OpenSPARC OpenJDK Open Source University Meetup
People	Bill Joy Andy Bechtolsheim Scott McNealy Vinod Khosla

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See also

External links